Which of the following substances is classified as a solution?

Salt water
Water
Hydrogen
Noble Gas

Answers

Answer 1

Answer:

Salt water

Explanation:

Please mark me brainliest and thank me.

Answer 2

Answer:

the answer slat water

Explanation:


Related Questions

Which of the following pH numbers indicates a strong alkali?
a. 1
b. 5
c. 7
d.) 14

Answers

Answer:

1 is the correct answer of the question

What is the chemical name of C4H10

Answers

Answer:

Butane

Explanation:

Answer:

Butane

Explanation:

Butane is a colorless gas with a faint petroleum-like odor.

Melting point: -138 °C

What types of atoms typically form covalent bonds?

A. Metals with nonmetals, because their difference in electronegativity is above 1.7
B. Metals with nonmetals, because their difference in electronegativity is below 1.7
C. Nonmetals with nonmetals, because they're difference in electronegativity is above 1.7
D. Nonmetals with nonmetals, because of difference in electronegativity is below 1.7 ​

Answers

Answer:

D. Nonmetals with nonmetals, because of difference in electronegativity is below 1.7 ​

Explanation:

The types of atoms that typically form covalent bonds are non-metals with non-metals because of the difference in their electronegativity which is below 1.7.

In some instances, the difference can even be zero when dealing with homonuclear substances.

Covalent bond are formed between two or more atoms having low electronegativity differences between them. Each of the atoms share their valence electrons to be able to mimic the noble gases. The participating atoms will put down an unpaired electron to be used in forming a shared pair of electrons between them.

SOMEONE HELP WITH THE LAST QUESTION QUESTION 2) HURRY IM IN ZOOM<3

Answers

The value of x = 97

The unknown angles : 97°,97°, 107° and 59°

Further explanation

One variable linear equation is an equation that has a variable and the exponent number is one.  

Can be stated in the form:  

[tex]\large{\boxed{\bold{ax=b}}[/tex]

or  

ax + b = c, where a, b, and c are constants, x is a variable  

The parallelogram has total angle of 360°.

The value of each of the 4 angles of the parallelogram :

1. x°

2. x°

3. x+10°

4. 59°

The sum of the four angles of this parallelogram is :

[tex]\tt x+x+x+10+59=360[/tex]

So that the mathematical equation becomes (by combining the like terms) :

[tex]\tt 3x+69=360\\\\3x=291\\\\x=97[/tex]

So the value of the four angles (by entering the x value)

1. 97°

2. 97°

3. x+10=97+10=107°

4. 59°

The following half-reaction method is used to balance oxidation-reduction equations.

(1) Determine which atoms change oxidation state from reactant to product in the reaction.
(2) Identify and write half reactions (oxidation and reduction).
(3) Return to the original chemical equation to balance it.
(a) Insert the coefficients from the half reactions first.
(b) Inspect the number of each atom on each side for all elements.

Which important step is missing from this procedure?

Check other reactions similar to this one.
Name the elements that are involved in the reaction.
Make sure the reduction half reaction is identified first.
Balance the half reactions based on the number of electrons.

Answers

Answer:

its (D) Balance the half reactions based on the number of electrons.

Explanation:

Answer:

D ✔️

Explanation:

"Balance the half reactions based on the number of electrons."

NEED HELP ON 8,9,10,and 11. ONLY if you know them please.

Answers

Answer:

8: D

9: A

10: C

11: B

the answer’s are D, A, C, B

How much HCl exists in 347 mL of 0.48 M
solution of HCI?
Answer in units of mol.

Answers

Answer:

Number of moles of HCl = 0.17 mol

Explanation:

Given data:

Volume of solution = 347 mL

Molarity of solution = 0.48 M

Number of moles of HCl present = ?

Solution:

Formula:

Molarity = number of moles of HCl / volume in L

Volume in L:

347 mL× 1L / 1000 mL

0.347 L

by putting values in formula:

0.48 mol/L = number of moles / 0.347 L

Number of moles = 0.48 mol/L × 0.347 L

Number of moles = 0.17 mol

what's common to H20,HF and NH3​

Answers

Answer:

They all contain sone hydrogen atoms.

Explanation:

H is hydrogen doi

The diameter of a helium atom is about 1 3 102 pm. Suppose that we could line up helium atoms side by side in contact with one another. Approximately how many atoms would it take to make the distance from end to end 1 cm

Answers

Answer:

1 × 10⁸ He atoms

Explanation:

Step 1: Given data

Diameter of a helium atom (d): 1 × 10² pmTotal distance to be covered (D): 1 cm

Step 2: Convert "d" to meters

We will use the conversion factor 1 m = 10¹² pm.

1 × 10² pm × (1 m / 10¹² pm) = 1 × 10⁻¹⁰ m

Step 3: Convert "D" to meters

We will use the conversion factor 1 m = 100 cm.

1 cm × (1 m / 100 cm) = 0.01 m

Step 4: Calculate the number of atoms of He required

We will use the following expression.

D/d = 0.01 m / 1 × 10⁻¹⁰ m = 1 × 10⁸

The correct name for the compound N₂O₃ is *

Answers

Answer:

Dinitrogen trioxide.

Explanation:

The correct name for the compound [tex]N_2O_3[/tex] is dinitrogen trioxide. The compound [tex]N_2O_3[/tex] also happens to be a covalent compound, and the nomenclature of covalent compounds involves the usage of numerical prefixes such as "mono-" and "tri-".

Since there are two nitrogen atoms in the compound [tex]N_2O_3[/tex], we can use the numerical prefix "di-", meaning two, to signify that.

Since there are three oxygen atoms in the compound [tex]N_2O_3[/tex], we can use the numerical prefix "tri-", meaning three, to signify that.

If you have 23.8g of CaCl2, how many formula units is it?

Answers

Answer:

1.3×10²³ formula unit

Explanation:

Given data:

Mass of CaCl₂ = 23.8 g

Number of formula unit = ?

Solution:

Number of moles = mass/molar mass

Number of moles = 23.8 g/110.98 g/mol

Number of moles = 0.21 mol

1 mole of any substance contain 6.022×10²³ formula unit

0.21 mol × 6.022×10²³ formula unit / 1mol

1.3×10²³ formula unit

What is the group number of the most nonmetallic group that contains metalloids?
_______________
What is the group number of the most metallic group that contains metalloids?
_______________

Answers

Answer:alkali metals group 1

Explanation:practice and get better

Which phrase describes gravitational attraction?

how heavy an object feels

the amount of matter in an object

how objects respond to changes in mass

the pull between objects with mass

Answers

d i believe because the first two are obvious

The phrase which best describes gravitational attraction is the pull

between objects with mass.

What is Gravitational attraction?

Gravitational attraction is the attraction which occurs between two objects

with mass. The force of attraction has a magnitude which is directly

proportional to the masses of the two objects and inversely proportional to

the square of the distance between the two objects.

This is the reason why option D i9s the most appropriate option as it deals

with pull or attraction.

Read more about Gravitational attraction here https://brainly.com/question/15090289

Look at picture and answer will mark brainliest.

Answers

Answer:

A

Explanation:

Are all elements and compounds pure substances?

Answers

Answer:

Yes

Explanation:

All elements and compounds are regarded as pure substances. Whereas mixtures are classified as impure substances.

The characteristics of pure substances are:

they have homogenous parts. they have a definite compositionthey cannot be easily broken or separated by physical meansthey have unique sets of physical properties.

These characteristics perfectly fits those of elements and compounds.

A chemist determines by measurements that moles of bromine liquid participate in a chemical reaction. Calculate the mass of bromine liquid that participates. Be sure your answer has the correct number of significant digits.

Answers

Answer:

This question is incomplete as it lacks the number of moles of Bromine. The complete part is as follows: 0.0900 moles of bromine liquid participate in a chemical reaction.

The answer is 7.191g

Explanation:

The number of moles in a substance can be calculated thus;

moles = mass/molar mass

Atomic mass of Bromine = 79.9g/mol

According to the question, the chemist determines by measurements that 0.0900 moles of bromine liquid participate in a chemical reaction. To calculate the mass of bromine liquid that participates, we say;

Mass = moles × molar mass

Mass = 0.0900 × 79.9

Mass = 7.191g

Therefore, 7.191g of Bromine will participate in the chemical reaction.

Many plants obtain glucose through the process of ___

Answers

Answer:

vb

Explanation:

b

Answer:

photosynthesis

Explanation:

whats the answer giving brainliest if it correct

Answers

Answer:

c. A flat board tilted at an angle

Explanation:

form the looks of it, and i dont wanna sound like a flat earther her, cuz im not '-', but the best option here would be the flat board at an angle becasue the earth is tilted and isnt even like it said in the prompt.

Hope this helped and idrc about brainliest :)

Using the diagram below and the labels attached to it answer the following:
Transverse Wave Anatomy
1. Define the crest and trough of a wave and identify TWO points that represents a crest or a trough.
2. Define wavelength and identify TWO points that could be used in the diagram to measure it.
2. Determine the frequency of this wave if the waves the diagram represents occurred within 1 second.

Answers

Answer & Explanation:

Crest is a point in the cycle where maximum or peak amplitude exists. In another way, it is a point on the positive side of a wave where maximum amplitude exits. Trough is a point in the cycle where minimum amplitude exists.

Crest: points A and E

Trough: points C and J

Wavelength is the distance between two crests or two troughs. One example is distance between points A and E.

Frequency is 3 because there are 3 oscillations in 1 second (follow the line from beginning to point D, then D to G, the G to end).

I asked that question on my brainly account to answer your question so the people that answerd my question said this is right I HOPE IT IS!!

1. The highest point or crest of a wave is called a crest, and the lowest point or valley is called a trough.

2. The wavelength of a wave is the distance between its two successive crests or troughs.

3. The frequency of a wave is the number of complete cycles (peak or trough) that occur in a unit time.

1. The highest point or crest of a wave is called a crest, and the lowest point or valley is called a trough. On the other hand, in a transverse wave, the peak and trough will be represented by the places of highest displacement above and lowest displacement below the equilibrium position, respectively.

2. The wavelength of a wave is the distance between its two successive crests or troughs. However, wavelength can be determined by comparing any two locations that are separated by a full circle, such as two successive crests or troughs.

3. The frequency of a wave is the number of complete cycles (peak or trough) that occur in a unit time. If the waves in the diagram are visible within one second, then the frequency will be determined by how many complete cycles were visible within that time.

Learn more about Wavelength, here:

https://brainly.com/question/31143857

#SPJ6

write the general formula of a. alkane b. aikyl radicals radicals

Answers

Answer:

General formula of alkanes is: [tex]C_{n}H_{2n+2}[/tex]

General formula of alkyl: [tex]C_{n}H_{2n+1}[/tex]

which two locations have climate warmed by the gulf streams please help

Answers

Answer:

A and C

Explanation:

Hope this helps :)

Answer:

I think B and C hope this helps!

Explanation:

Consider the elements: Na, Mg, Al, Si, P.

a. Which element has the lowest second ionization energy?
b. Which element has the smallest atomic radius?
c. Which element is least metallic?
d. Which element is diamagnetic?

Answers

Answer:

The elements mentioned in the series are Na, Mg, Al, Si, and P. It can be seen that all these elements are located in the same period. The atomic number of the mentioned elements are Na-11, Mg-12, Al-13, Si-14, and P-15.

a) There will be an increase in the ionization energy with the increase in the element's atomic number across a period. More energy is needed to withdraw an electron from a completely occupied shell in comparison to an incompletely occupied shell.

The atomic number of Na is 11. When one electron is withdrawn from Na, it gets converted into the inert gas configuration of Ne. Thus, it will require more energy to withdraw the second electron from Na. Hence, Na exhibits the lowest second ionization energy.

b) Across the period, with an increase in the element's atomic number, the atomic radii reduces from left to right. Thus, P exhibits the smallest atomic radius.

c) The metallic nature of the elements reduces from left to right across a period in the periodic table. Thus, P is the least metallic element.

d) Diamagnetic signifies towards the element that exhibits pair electrons in its sub-shells. The electronic configuration of Mg is,

1s2 2s2 2p6 3s2

In Mg, no unpaired electrons are present, while all the remaining elements mentioned exhibit unpaired electrons in their valence shell. Thus, Mg is the diamagnetic element.

Which of the following is an example of kinetic energy?
A. The energy of moving particles near a fire
B. The energy in the nucleus of an atom
C. The energy stored in the chemical bonds of fuel
D. The energy a hot air balloon has because of its position in the air

Answers

Answer:

A. The energy of moving particles near a fire

Explanation:

What volume (in liters) of a 1.772 M BaCl2 solution is needed to obtain 123 g of BaCl2?

Answers

Answer:

Volume required = 0.327 L

Explanation:

Given data:

Volume in L = ?

Molarity of solution = 1.772 M

Mass of BaCl₂ = 123 g

Solution:

First of all we will calculate the number of moles of BaCl₂,

Number of moles = mass/molar mass

Number of moles = 123 g/ 208.23 g/mol

Number of moles = 0.58 mol

Now, given problem will solve by using molarity formula.

Molarity = number of moles / volume in L

1.772 M = 0.58 mol / Volume in L

Volume in L = 0.58 mol  / 1.772 M

Volume in L = 0.327 L

The electricity accounts of residents in a very small town are calculated as follows: v If 250 units or fewer are used, the cost is 2 cents per unit; v If more than 250 but not more than 800 units are used, the cost is $10 for the first 250 units and 5 cents for every unit in the excess of 250. v If more than 800 units are used, the cost is $35 for the first 800 units plus 10 cents for every unit in the excess of 800. v A basic service fee of $5 is charged, no matter how much electricity is used. Write a user-defined function program to calculate the fees of any electricity unit, and then write a command to calculate the fee of a resident who used 700 electricity units.

Answers

Answer:

For you first question about the defined function program:

if ( v ≤ 250 ) {

   set p to (5 + v*.02)

}

elseif ( 250 ≤ v ≤ 800 ) {

   set p to (5 + 2500 + (v - 250)*.02)

}

else {

   set p to (5 + 28000 + (v - 800)*.1)

}

This function will first check if the user has used how many units and decide which category that user falls into.

Then, it uses that information to execute a command to calculate how much money that user should pay for the electricity bill, factoring in the extra demands from the question.

For your second question:

(5 + 2500 + (700 - 250)*.02)

= (3000 + 450*.02)

= (3000 + 9)

= 3009

The customer should have paid 3009 dollars.

Explanation:

Hope this helped!

Which of the following is an example of how the need to maintain
homeostasis can cause an organism to change its behavior?
please answer quickly!!!!
(examples in the photo)

Answers

Answer:

C. A human shivers when exposed to cold weather.

Explanation:

Homeostasis simply refers to balance, which is desirable in the context of an organism. In this problem, the only one that demonstrates this is a human shivers when exposed to cold weather. By using kinetic energy, heat is generated, maintaining a balance, so to speak.

(btw you may find it more helpful to post these types of problems under biology in the future.)

In solid methane, the forces between neighboring CHA molecules are best characterized as

Answers

sorry I didn't understand the question ask you to do

Would It be C Please help

Answers

Answer:

yes its c

Explanation:

How many energy Do Squrrel's have

Answers

Answer:

pfffft definitely 10. smh silly goose

"Ground squirrels eat nuts, leaves, roots, seeds, and other plants. They also catch and eat small animals, such as insects and caterpillars.Though they are terrific climbers, these squirrels do come to the ground in search of fare such as nuts, acorns, berries, and flowers. They also eat bark, eggs, or baby birds."

you place your hand on the thermos what type of transfer is taking place

1.Conduction
2.Convection
3.Radiation ​

Answers

Answer:

conduction

Explanation:

Conduction happens when 2 objects with different temperatures come in contact with each other. The heat transfers from the hotter object to the cooler object.Apr

Answer: Conduction

Explanation: Conduction: Conduction happens when 2 objects with different temperatures come in contact with each other. The heat transfers from the hotter object to the cooler object.

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