32. Calculate the pH of a solution at 1.00 x 10- MIH") and identify the substance as an acid or base,

Answers

Answer 1

Answer:

[tex]{ \boxed{ \tt{formular : pH = - log[H {}^{ + } ]}}} \\ pH = - log(1.00 \times {10}^{-6} ) = 6: it's an acid\\ since \: we \: lack \: the \: exponent, \: this \: question \: is \: unsolvable \\ { \green{ \bf{take \: note}}} :{ \tt{pH \: below \: 7 \: that \: is \: { \red{acidic}}. \: \: pH \: greater \: than \: 7 \: is \: { \red {basic}}}}[/tex]


Related Questions

The reactants of two chemical equations are listed.

Equation 1: CuSO4 and NaOH
Equation 2: Fe and CuSO4

Based on the type of reaction, which reaction can be used to extract copper metal from copper sulfate solution?

A - Equation 2, because Fe being more reactive, replaces Cu from CuSO4
B - Equation 2, because Fe being more reactive, replaces S from CuSO4
C - Equation 1, because Na being more reactive, exchanges position with Cu in CuSO4
D - Equation 1, because Na being more reactive, exchanges position with S in CuSO4

Answers

The reaction that can be used to extract copper metal from copper sulfate solution would be equation 2.

Fe will displace Cu from CuSO4 because it is more reactive. In other words, Fe ranks higher than Cu in the reactivity series.

Thus:    [tex]Fe + CuSO_4 ---> Cu + FeSO_4[/tex]

Even though Na will displace Cu from CuSO4, equation 1 will result in the formation of Cu(OH)2 instead of free Cu because it is a double replacement reaction.

More on copper production can be found here: https://brainly.com/question/13677872?referrer=searchResults

In vascular plants, the absorption of water from the soil into root hairs depends principally upon the presence of a
A. phototropic response by the root hairs
B. geotropic response by the conducting tissue
OOOO
C. higher concentration of water in the soil than in the root hairs
D. higher concentration of water in the root hairs than in the soil

Answers

Answer:

the answer is C) higher concentration of water in the soil than in the root hairs

Explanation:

Answer:

the answer is c

Explanation:

i just got it

When a substance freezes or condenses, which four of the following things are true for it's particles?
(Select 4 answers)

A. Lose energy
B. Gain energy
C. Move more
D. Move less
E. Become further apart
F. Become closer together

Answers

Answer:

Gain energy, move less, become closer together

Consider the balanced reaction below:

P2O3 + 3H2O → 2H3PO3

How many grams of diphosphorus trioxide, P203, are required to produce 10.2 moles of phosphorous acid, H3PO3?

Answers

Answer:

5.1 moles of P2O3 are required

Explanation:

Based on the reaction, 1 mole of diphosphorus trioxide, P2O3, reacts with 3 moles of water to produce 2 moles of phosphorous acid, H3PO3. That means the conversion factor is: 1mol P2O3 = 2mol H3PO3.

The moles of P2O3 required to produce 10.2mol H3PO3 are:

10.2mol H3PO3 * (1mol P2O3 / 2mol H3PO3) =

5.1 moles of P2O3 are required

La siguiente reacción es altamente exotérmica: N2H4 + O2 → N2 + H2O ∆H= -622,4 Kj Cuánto calor se libera al producir 5 moles de nitrógeno.

Answers

Answer: -3112 kJ of heat will be released when 5 moles of nitrogen is produced.

Explanation:

We are given:

Moles of nitrogen = 5 moles

Given chemical reaction follows:

[tex]N_2H_4+O_2\rightarrow N_2+2H_2O;\Delta H=-622.4 KJ[/tex]

By stoichiometry of the reaction:

If 1 mole of nitrogen gas is produced, the heat released is -622.4 kJ

So, if 5 moles of nitrogen gas is produced, the heat released will be = [tex]\frac{-622.4kJ}{1mol}\times 5mol=-3112kJ[/tex]

Hence, -3112 kJ of heat will be released when 5 moles of nitrogen is produced.

where was the first oil well drilled​

Answers

Answer:

First oil well in the United States, built in 1859 by Edwin L. Drake, Titusville, Pennsylvania.

Figure 1 (Use this figure to answer questions 6,7, and 8. Assume that the height at point
A and point C are the same)
С
B
As the car moves from point A, to point B, and finally to point C, the total energy of the car
decreases from point A to point B, then increases from point B to point
increases from point A to point B, then decreases from point B to point
O is lost between points B and C
stays the same, but is converted between potential and kinetic energy

Answers

Answer:

JWBVH

Explanation:

NWSBWHSBHS

2 moléculas de clorato de potasio (KClO3) forman 2 moléculas de cloruro de potasio (KCl) y 3 moléculas de oxígeno (O2

Answers

The complete question is as follows: 2 molecules of potassium chlorate (KClO3) form 2 molecules of potassium chloride (KCl) and 3 molecules of oxygen (O2). Write a balanced equation for this reaction?

Answer: The balanced chemical equation is [tex]2KClO_{3} \rightarrow 2KCl + 3O_{2}[/tex].

Explanation:

A balanced equation is defined as the equation which contains same number of atoms on both reactant and product side when a chemical reaction occurs.

Hence, when 2 molecules of potassium chlorate [tex](KClO_{3})[/tex] form 2 molecules of potassium chloride (KCl) and 3 molecules of oxygen [tex](O_{2})[/tex] then its balanced equation will be as follows.

[tex]2KClO_{3} \rightarrow 2KCl + 3O_{2}[/tex]

Here, number of atoms on the reactant side as as follows.

K = 2Cl = 2O = 6

Number of atoms on the product side are as follows.

K = 2Cl = 2O = 6

Since, the number of atoms on reactant side are equal to the number of atoms on product side. So, this reaction equation is balanced.

Thus, we can conclude that the balanced chemical equation is [tex]2KClO_{3} \rightarrow 2KCl + 3O_{2}[/tex].

Find out how many atoms will fit in one apple . Adius of an apple is about 3.5 cm and the radius of an atom is 1.5 angstrom

Answers

Answer:

1.3 × 10²⁵ atoms

Explanation:

Step 1: Calculate the volume of an apple

The radius of an apple is 3.5 cm (3.5 × 10⁻² m). If we assume it is a sphere, we can calculate its volume using the following expression.

V = 4/3 × π × r³

V(apple) = 4/3 × π × (3.5 × 10⁻² m)³ = 1.8 × 10⁻⁴ m³

Step 2: Calculate the volume of 1 atom

The radius of 1 atom is 1.5 A (1.5 × 10⁻¹⁰ m). If we assume it is a sphere, we can calculate its volume using the following expression.

V = 4/3 × π × r³

V(atom) = 4/3 × π × (1.5 × 10⁻¹⁰ m)³ = 1.4 × 10⁻²⁹ m³

Step 3: Calculate how many atoms are in 1 apple.

V(apple)/V(atom) = 1.8 × 10⁻⁴ m³/1.4 × 10⁻²⁹ m³ = 1.3 × 10²⁵

The study of the interaction of electrical and magnetic fields, and their interaction with matter, is called _____.

electromagnetism
superconductivity
relativity
magnetism

Answers

Answer:

The study of the interaction of electrical and magnetic fields, and their interaction with matter, is called Electromagnetism

PLEASE ANYONE HELP!!!
How does an increase in -CH2 groups in an organic chain affect the boiling point?

A. The boiling point increases as more -CH2 groups are added.
B. The boiling point increases up to 4 CH2 groups and then begins to decrease.
C. The boiling point is not affected by -CH2 groups, only by functional groups.
D. The boiling point decreases as more -CH2 groups are added.

Answers

The boiling point increases as more -CH2 groups are added

Answer:

I believe it's a.

Explanation:

A properly designed experiments changes one variable at a time. A student wanted to know which type of sugar would yield the greatest amount of energy for the cell when metabolized during cellular respiration by mitochondria. The student mixed yeasts in three different sugar solutions: maltose, glucose, sucrose. The three sets of yeasts were monitored to determine which sugar type yielded the most energy. List three factors that the student must keep constant during the experiment

Answers

Answer:

The amount of water

The amount of sugar and

The amount of yeast

Explanation:

A constant variable is that variable in an experiment which must be kept the same for all groups in order not to alter the results of the experiment.

In this question, the independent variable i.e. the variable being manipulated is the TYPE OF SUGAR USED while the dependent variable i.e. variable that responds to change is AMOUNT OF ENERGY. Three different types of sugar were used viz: maltose, glucose, and sucrose. To not alter the outcome of the experiment, the constants of this experiment i.e. variables that must be the same for all groups of the experiment, include the following:

- The amount of water

- The amount of sugar

- The amount of yeast used

Give an example of each of the following chemical changes.
(a) A photochemical reaction involving
(i) silver salt
(ii) water

(b) A reaction involving
(i) blue solution
(ii) formation of dirty green precipitate

(c) Two gases combine to form white solid.

(d) A reaction where colour change is noticed.​

Answers

Answer:

Give an example of each of the following chemical changes.

(a) A photochemical reaction involving

(i) silver salt

(ii) water

(b) A reaction involving

(i) blue solution

(ii) formation of dirty green precipitate

(c) Two gases combine to form white solid.

(d) A reaction where colour change is noticed.​

Explanation:

a) A photochemical reaction involving  silver salt is used in black and white photography.

AgCl breaks down and converts into Ag during this photochemical reaction.

(ii) Photochemicalreaction involving water takes place in plants during the photosynthesis process.

Plants prepare food(carbohydrate) by using sunlight water and CO2 gas.

(b) A reaction involving

(i) blue solution:

For example reaction of copper sulfate solution with an iron nail.

When an iron nail is placed in CuSO4 blue color solution, then it changes to green color and reddish-brown solid deposits at the bottom of the container.

(ii) Reaction of ferrous sulfate with NaOH forms a dirty green precipitate of ferrous hydroxide.

(C) Two gases combine and form a white solid:

For example when HCl gas reacts with ammonia gas, then a white solid of ammonium chloride will be formed.

(d)  A reaction where the color change is noticed.:

When an iron nail is placed in CuSO4 blue color solution, then it changes to green color and reddish-brown solid deposits at the bottom of the container.

The equilibrium constant (K) for the reaction
2HCI(g) = H2(g) + Cl2(g)
is 4.17 x 10-34 at 25°C. What is the equilibrium constant for the reverse reaction at the same
temperature?
H2(g) + Cl2(g) = 2HCl(g)

Answers

Answer: The equilibrium constant for the reverse reaction at the same temperature is [tex]2.40 \times 10^{33}[/tex].

Explanation:

The given reaction equation is as follows.

[tex]2HCl(g) \rightleftharpoons H_{2}(g) + Cl_{2}(g)[/tex] ... (1)

It's equilibrium constant (K) value is [tex]4.17 \times 10^{-34}[/tex].

Also, another reaction equation is as follows.

[tex]H_{2}(g) + Cl_{2}(g) \rightleftharpoons 2HCl(g)[/tex]

This is the reverse of equation (1). Hence, its equilibrium value is calculated as follows.

[tex]K' = \frac{1}{K}\\= \frac{1}{4.17 \times 10^{-34}}\\= 2.40 \times 10^{33}[/tex]

Thus, we can conclude that the equilibrium constant for the reverse reaction at the same temperature is [tex]2.40 \times 10^{33}[/tex].

Sodium is less reactive than potassium.​

Answers

Answer:

Sodium atoms due to being smaller in size have high ionization energy and thus, it can't lose electrons easily and is more stable and less reactive. ... Hence, from this it is clear that sodium is less reactive than potassium.

Explanation:

______is composed of substance that are spread evenly among each other.

Answers

Answer:

a solute

Explanation:

the answer is a solute

Which type of biomacromolecule contains paired bases? A. Nucleic Acid B. Carbohydrate C. Lipid D. Protein​

Answers

Answer:

D.Protien

Explanation:

DNA has four nucleobases: adenine, thymine, guanine, and cytosine. The nucleobases in a DNA strand have preferred partners to form hydrogen bonds with. Cytosine pairs with guanine, and adenine pairs with thymine. These are the base pairing rules that allow DNA replication and protein synthesis to happen.

Which is made up of only one type of atom?
A.a solution
B.a homogeneous mixture
C.an element
D.a compound

Answers

C - an element is only a single material so it is the option made of only once type of atom

Answer:

C. an element

Explanation:

Elements are pure substances and made up of only one type of atoms which cannot be further broken down.

A 30. g sample of Aluminum was heated to 40. 0C and placed in a calorimeter containing 50. g of water at 21 0C. What is the final temperature of the aluminum-water system if the cAl = 0.21 cal/g0C and cwater = 1.0 cal/ g 0C.

Write the complete equation you will use. 1 point

Substitute the values in the equation in step 1 . 1 point

Report the math answer with 2 sig figs and the correct unit. 1 point

Answers

Answer: The final temperature will be [tex]23^oC[/tex]

Explanation:

Calculating the heat released or absorbed for the process:

[tex]q=m\times C\times (T_2-T_1)[/tex]

In a system, the total amount of heat released is equal to the total amount of heat absorbed.

[tex]q_1=-q_2[/tex]

    OR

[tex]m_1\times C_1\times (T_f-T_1)=-m_2\times C_2\times (T_f-T_2)[/tex]           ......(1)

where,

[tex]C_1[/tex] = specific heat of aluminium = [tex]0.21 Cal/g^oC[/tex]

[tex]C_2[/tex] = heat capacity of water = [tex]1Cal/g^oC[/tex]

[tex]m_1[/tex] = mass of aluminium = 30. g

[tex]m_2[/tex] = mass of water = 50. g

[tex]T_f[/tex] = final temperature of the system = ?

[tex]T_1[/tex] = initial temperature of aluminium = [tex]40.^oC[/tex]

[tex]T_2[/tex] = initial temperature of the water = [tex]21.^oC[/tex]

Putting values in equation 1, we get:

[tex]30\times 0.21\times (T_f-40)=-50\times 1\times (T_f-21)\\\\56.3T_f=1302\\\\T_f=\frac{1302}{56.3}=23.13^oC=23^oC[/tex]

Hence, the final temperature will be [tex]23^oC[/tex]

Diseña un procedimiento que te ayudaría a obtener agua en el desierto usando como fundamento la destilación?

Answers

Answer:b

Explanation:

I searched it

What is the balanced chemical reaction when Aluminium reacts with NaOH to produce NaAlO2 and H2 gas?​

Answers

Answer:

2NaOH + 2Al +2H2O = 2NaAlO2 +3H

Explanation:

Aluminum is an amphoteric element it reacts with both bases and acids to form a salt and hydrogen gas.The reaction is highly exothermic.

An electron in a hydrogen atom moves from level 1 to level 4. The electron then drops from level 4 to level 2. Which
statement describes the most likely result?
O The energy absorbed in the first move equals the energy released in the second move.
O The energy absorbed in the first move is greater than the energy released in the second move.
O The energy released in the first move equals the energy absorbed in the second move.
O The energy released in the first move is greater than the energy absorbed in the second move.

Answers

Answer:

B

Explanation:

When the electron goes up levels it absorbs energy to enter that higher energy state. When it goes down, it releases energy but just not as much because 1-4 is more than 4-2.

Equation balancing
a. S(s) + O2(g) → SO3(g)
b. 2Al(s) + 3Cl2(g) ► 2AICI3(s)
E. 2NaOH(s) + H2SO4(ac) —Na2So (ac) + H2O(l)
d. C3H8(g) + 50(g) -3C02(g) + 4H2O(g)

Answers

Answer:

For a: The balanced equation is [tex]2S(s)+3O_2(g)\rightarrow 2SO_3(g)[/tex]

For c: The balanced equation is [tex]2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)[/tex]

Explanation:

A balanced chemical equation is one where all the individual atoms are equal on both sides of the reaction. It follows the law of conservation of mass.

For (a):

The given unbalanced equation follows:

[tex]S(s)+O_2(g)\rightarrow SO_3(g)[/tex]

To balance the equation, we must balance the atoms by adding 2 infront of both [tex]S(s)[/tex] and [tex]SO_3[/tex] and 3 in front of [tex]O_2[/tex]

For the balanced chemical equation:

[tex]2S(s)+3O_2(g)\rightarrow 2SO_3(g)[/tex]

For (b):

The given balanced equation follows:

[tex]2Al(s)+3Cl_2(g)\rightarrow 2AlCl_3(s)[/tex]

The given equation is already balanced.

For (c):

The given unbalanced equation follows:

[tex]2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+H_2O(l)[/tex]

To balance the equation, we must balance the atoms by adding 2 infront of [tex]H_2O(l)[/tex]

For the balanced chemical equation:

[tex]2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)[/tex]

For (d):

The given balanced equation follows:

[tex]C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)[/tex]

The given equation is already balanced.

Identify the substance which has same number of molecules in 14g N2
a) 3.4g NH3
b) 15g NO
c)64g O2
d) 32g SO2
e)1g H2

Answers

We need to know the number of molecules which is number of moles * Avogadro’s number
So
We need to compare number of moles because Avogadro’s numbers is constant for all
We’ll start with Nitrogen gas : 14g/28g.mol=0.5 mole

For NH3 : 3.4g / (14+3)g.mol= 0.2 mol
For NO. : 15g/(14+16)g.mol = 0.5 mol
For O2 : 64g/32 g.mol = 2 mol
For SO2: 32g /( 32+32) g.mol = 0.5mol
For H2. : 1g/ 2g.mol = 0.5 mol

So
H2& SO2 & NO have the same number of moles of N2 and the same number of molecules of N2

What are the various ways in which an atom of an element can achieve the noble gas configuration ? ​

Answers

Answer:

Atoms attain noble gas configuration by obtaining or donating and sharing of electrons present in their outermost shell.

Which of these is made up of smallest particles of rocks which contain decayed matter of plants and animals? A. Land B. Soil C. Mineral D. Sub-soil​

Answers

Answer:B.  as a mineral is a deposit of fine materials it would not contain decayed materials without outside assistance

PLZ HELP!!! QUESTIONS ARE BELOW!!! :D PLZ COMPLETELY ANSWER THE QUESTIONS WITH A GOOD ANSWER :)

Answers

Answer: sorry its lagging i hope this help fore 18.. =D

Explanation:

n,s is repeating the cycle of the inside

Answer/Explanation:

18, a,

I believe the n, and s represents North, South, or just the way the arrows are rotating repeatedly.

18, b,

The phenomenon re-occurring shows the alignment of magnetic dipoles with in a magnet, like inside. The arrows show a direction in the line with an external magnetic field in a way that it can produce its own magnetic fields that seem to travel from North to the South.

18, c,

Incorrect. Refrigerator magnets have multiple layers of magnification, they use opposite polarities to stay this way. If he puts the magnet sideways it may stick to the fridge

~ LadyBrain

17) A 0.20 M solution of HCl with a volume of 15.0 mL is exactly neutralized by the 0.10 M solution of NaOH with what volume? HINT: Use the titration formula from table T. First multiply, then divide. o 1.5 mL O 7.5 mL 7 o 3.0 mL 0 30. mL​

Answers

Answer: A 0.20 M solution of HCl with a volume of 15.0 mL is exactly neutralized by the 0.10 M solution of NaOH with 3 mL volume.

Explanation:

Given: [tex]M_{1}[/tex] = 0.20 M,      [tex]V_{1}[/tex] = 15.0 mL

[tex]M_{2}[/tex] = 0.10 M,            [tex]V_{2}[/tex] = ?

Formula used is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula s follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\0.20 M ]times 15.0 mL = 0.10 M ]times V_{2}\\V_{2} = 30 mL[/tex]

Thus, we can conclude that a 0.20 M solution of HCl with a volume of 15.0 mL is exactly neutralized by the 0.10 M solution of NaOH with 3 mL volume.

Complete and balance the equation for the single-displacement reaction. Phases are optional. balanced equation: 2NaBr+Cl2=2NaCl+Br2

Answers

Cl2 + 2NaBr >>> 2NaCl + Br2

What is the wavelength of light with 4.01 x 10^-19 J of energy? (The speed of light in a vacuum is 3.00 x 10^8 m/s, and Planck's constant is 6.626 x 10^-34 Jos.)

A. 1820 nm
B. 496 nm
C. 202 nm
D. 551 nm

Answers

Answer:

D

hope it helps:)))!!!!!!

The concept Planck's quantum theory of radiation is used here to determine the wavelength of the light. The wavelength of the light with 4.01 x 10⁻¹⁹ J of energy is 496 nm . The correct option is B.

What is Planck's quantum theory?

According to Planck's quantum theory, different atoms and molecules can emit or absorb energy in discrete amount only. The smallest amount of energy which can be emitted or absorbed in the form of electromagnetic radiation is called quantum.

The energy of the radiation absorbed or emitted is directly proportional to the frequency of the radiation. It is given by the equation:

E = hν

ν = E / h

4.01 x 10⁻¹⁹ J / 6.626 x 10⁻³⁴ = 6.05 × 10¹⁴ Hz

We have,

ν = c / λ

λ = c / ν

3.00 x 10⁸  /  6.05 × 10¹⁴ = 4.958 × 10⁻⁷ m

1 nm = 1 × 10⁻⁹ m

4.958 × 10⁻⁷ m = 495.8 nm = 496 nm

Thus the correct option is B.

To know more about wavelength, visit;

https://brainly.com/question/30171018

#SPJ7

Other Questions
Your grandparents put $10,200 into an account so that you would have spending money in college. You put the money into an account that will earn an APR of 4.19 percent compounded monthly. If you expect that you will be in college for 4 years, how much can you withdraw each month? Solve the system by substitution.- 2x 10y = -2-4y = x Which of these choices allows people to pass down survival techniques fromone generation to the next?A. CommunicationB. ForagingC. DomesticationD. Clothing Hi can anyone help me with this Q ? Its for my final. I would appreciate it a lot !!-The angle of elevation from a boat to the top of a 125ft hotel is 22 How far is the boat from the base of the hotel ? ( round to the nearest TENTH ) 6. Roll a pair of dice. What is the probability that a total of 12 will be face up? 2. Which types of halogen compounds are known to contribute to ozone depletion?O A. ChlorofluorocarbonsO B. SaltsO C. Alkali metalsO D. Oxides hello can u plz help me and give the right answer and there's a screenshot below In Problem, p is in dollars and q is the number of units.(a) Find the elasticity of the demand functionp2 + 2p + q = 49 at p = 6.(b) How will a price increase affect total revenue? The American Revolution inspired Latin American countries to declare independence from Europe.TrueFalse your answer. Read the following: *** "Jeremy was relieved by the comments on the first draft of his essay. He'd used too many adjectives, but his professor thought the paper would be in good shape if he elided the unnecessary terms." Based on context clues in the reading, define "elide." to leave out to expand to include V to discuss A cell phone company wants to determine the average amount of data that their smart phone customers use each month. Which group would best represent a sample of the population?one thousand of their customers with the most expensive monthly plansone thousand of their customers who most recently signed up with the companyone thousand of their customers with a current smart phone data planone thousand of their customers who called in for technical support This is urgent the first person who answers my question correctly will get brainliest!!!Which of the following describes a main goal of the Republican Party that was formed in the 1950s? A. Prevent immigrants from settling in large cities B. Prevent the United States from becoming involved in foreign wars C. Prevent slavery from expanding into the territories D. Prevent the United States from taking the land of Native Americans is i am watching a movie Declarative sentence Jessica is 8 years old. Kayla is 6 years younger than twice Jessicas age. Which expression represents Kaylas age?A. (8*6)-2B. ( 8*2) -6C. 8*(6-2)D. 8* (2-6) Chris is a high school teacher. He has the same group of students for a semester and then gets a whole new group of students the next semester. He notices that after he gets the second group of students and learns their names, he has difficulty remembering the names of his last semester students when he sees them. Chris is experiencing _______.A) anterograde amnesiaB) retroactive interferenceC) retrogade amnesiaD) proactive interferenceE) anterograde interference Pls Helppppp meeeeee!! calculate the electrical potential at a point P a distance of 1 m from either two to charge of +10 micro coulomb and -5 micro coulomb which are 10 cm apart calculate also the potential energy of a +2 micro coulomb charge placed at a point p my health career plan example 304 cm x m and 67kg to gram please helpppp!!!!!!!! What are some similarities and/or differences between the Disabilities Rights Movement with the Civil Rights Movement and Womens Equality?