What is a reaction rate

Answers

Answer 1

Answer:

Explanation:

A reaction rate is the measure of the change in concentration of the disappearance of reactants or the change in concentration of the appearance of products per unit time


Related Questions

Which of the following diagrams is the correct electron dot diagram for Ne?

Answers

Answer:

B.

Explanation:

The electron dot diagram which is also known as the Lewis electron dot diagram is a diagram that shows an atom's valence electrons by placing dots, which represent the valence electrons of the element, around the elements symbol

The element for which the electron dot diagram is found = Neon, Ne

The atomic number of neon, Ne = 10

The electronic configuration of neon = 1s²2s²2p⁶

The valence shell is the outermost shell having   the highest value of the coefficient of the orbitals, n = 2s²2p⁶

The number valence electrons in neon = The number of electrons in the valency shell = 2 electrons + 6 electrons = 8 electrons

The number of valence electrons in neon = 8

Therefore, the electron dot diagram for neon will have 8 dots located around the Ne symbol, which gives option B

A student hypothesized that the amount of sunlight a sunflower plant receives determines the number of sunflower seeds the plant produces. In his experiment,
the number of seeds produces is the
Manipulated variable
ЕОООО
Control variable
Dependent variable
Independent variable

Answers

Answer:

Dependent variable

Explanation:

In every experiment, there must be a dependent variable and an independent variable.

The independent variable is that variable that you have to manipulate in order to receive a response. E.g, in the experiment described in the question, the amount of sunlight a sunflower plant receives is the independent variable.

The dependent variable is the number of seeds produced. It is the response obtained by carefully manipulating the amount of sunlight

7. A sample of a compound that contains only chlorine and oxygen reacts with excess hydrogen to produce 0.233 grams of hydrochloric acid and 0.403 grams of water. Determine the empirical formula of this compound.

Answers

Answer:

ClxOy + H2 > HCl + H2O

HCl = 0.233/37 = 0.006 mol H2O = 0.403/180.02 mol

HCl = 0.006/0.022 H2O = 0.022/0.006

= 1 = 4

Cl2O4 + 5H2 > 2HCl + 4H2O

I'm think that's the answer

Which particles are attracted as a result of the electrostatic force?

A. Protons and electrons
B. Any particles that have mass
C. Any particles that have like charges
D. Protons and neutrons

Answers

Answer:

A. Protons and electrons

What is the final velocity of a 3 kg object that starts with a 5 m/s velocity due to a 2 N force acting over 3 seconds?

Answers

Answer:

V= 13 m/s

Explanation:

We're asked to find the magnitude of the object's velocity after a force is applied for

3

s

parallel to its motion.

We'll call the direction it's moving the positive

x

-axis, and the direction of the applied force the positive

y

-axis.

The components of the initial velocity are

v

0

x

=

5

m/s

v

0

y

=

0

(It's moving at

5

meters per second in the straight line we called the

x

-axis.)

We know the object's mass is

3

kg

, and the force applied is

12

N

in the positive

y

-direction. The magnitude of the constant acceleration is thus

a

y

=

F

y

m

=

12

l

N

3

l

kg

=

4

m/s

2

Since this acceleration is directed upward, and the initial

y

-velocity is

0

, we can use the kinematics equation

v

y

=

v

0

y

+

a

y

t

to find the

y

-velocity after

3

seconds.

Plugging in known values, we have

v

y

=

0

+

(

4

l

m/s

2

)

(

3

l

s

)

=

12

m/s

No acceleration was applied in the

x

-direction, so it's

x

-velocity remains

5

m/s

. The magnitude of the velocity is thus

v

=

(

v

x

)

2

+

(

v

y

)

2

=

(

5

l

m/s

)

2

+

(

12

l

m/s

)

2

=

13

m/s

PEASE RESPOND QUICKLY WILL GIVE BRAINLIST!!!!!!!!
Which of the following polyatomic ions will form an ionic compound with a single sodium ion? (5 points)
A.)CO32−
B.)PO43−
C.)SO42−
D.)NO31−

Answers

Answer:

D).

[tex]{ \tt{NO_{3} {}^{ - } }}[/tex]

Explanation:

The nitrate ion because it is a radical with a valence of 1, forming sodium nitrate.

[tex]{ \tt{Na {}^{ + } .NO _{3} {}^{ - } }}[/tex]

The polyatomic ion that does form an ionic compound with a single sodium ion (Na^+) is NO3^- .

A polyatomic ion is an ion that contains more than one atom. Recall that an ion is any chemical specie that contains a positive or negative charge. Sodium is a member of group 1 and forms a univalent positive ion.

The polyatomic ion that does form an ionic compound with a single sodium ion (Na^+) is NO3^- and the compound is NaNO3.

Learn more: https://brainly.com/question/8592296?

Which statement describes the energy conversion that takes place durin
photosynthesis?
A. Plants convert chemical energy to solar energy.
B. Plants convert kinetic energy to chemical energy.
C. Plants convert solar energy to chemical energy.
D. Plants convert solar energy to kinetic energy.

Answers

Answer:

C

Explanation:

Photosynthesis is use of light(photo---solar energy) to make(synthesize) food(chemical energy) and is done by producers(plant)

According to cell theory - (select all that are true)

A. you are born with all the cells you will ever have.


B. all organisms are made of at least one cell.


C.cells are the building blocks of life.


D.all cells come from preexisting cells

Answers

Answer:

B. all organisms are made of at least one cell.

C.cells are the building blocks of life.

D.all cells come from preexisting cells

Explanation:

According to the cell theory that was proposed via the contribution of three scientists in 1830's namely: Matthias Schleiden, Theodor Schwann, and Rudolf Virchow, the following was stated:

- Cells are the basic and fundamental unit of life

- Living organisms are made up of one or more cells

- All cells arise from pre-existing cells.

From the above components, the following are said to be true and correlate with the universal cell theory:

B. all organisms are made of at least one cell.

C.cells are the building blocks of life.

D.all cells come from preexisting cells

You have 2.7 moles of carbon. How many atoms do you have?

Answers

Answer:

1.63 × 10²⁴ atoms.

Explanation:

To calculate the number of atoms (N) contained in 2.7moles of carbon, we multiply the number of moles (n) by Avogadro's number (6.02 × 10²³).

That is, N = n × nA

Where;

N = number of atoms

n = number of moles (mol)

nA = Avogadro's numbe

N = 2.7 × 6.02 × 10²³

N = 16.254 × 10²³

N = 1.63 × 10²⁴ atoms.

Hence, there are 1.63 × 10²⁴ atoms in 2.7moles of Carbon.

H2 + CaCl2 --> 2HCl + Ca How many grams of HCl are made when 2.93 g of

Ca are made?

Answers

Answer:

H2 + CaCl2 -> 2HCl + Ca

How many grams of HCl are made when 2.93 g of

Ca are made?

Explanation:

From the given balanced chemical equation, it is clear that:

2mol. of HCl and 1mol. of Ca are produced.

2mol. of HCl weighs --- 73.0g

1mol. of Ca weighs --- 40.0g

Hence,

73.0g of HCl and 40.0g of Ca are produced.

When 2.93g of Ca is produced then, how many grams of HCl will be produced?

[tex]=> 2.93g Ca * \frac{73.0g HCl}{40.0g Ca} \\=5.35g HCl[/tex]

Hence, 5.35g of HCl is formed.

Complete the table by writing the name or formula of each compound and the type of bonding that it uses. You may refer to this list of polyatomic ions.

Answers

Explanation:

Dinitrogen monoxide: covalent bond

copper(||) hydroxide: ionic bond

Butane: Covalent Bond

Answer

Disulfur decafluoride S2F10 covalent

calcium sulfide  CaSO3 ionic

Diphosphorus tetraiodide P2I4 ionic

dinitrogen monoxide  N2O   ionic

Aluminum chloride  AlCl3  covalent

copper(II) hydroxide  Cu(OH)2  ionic

barium sulfate BaSO4  covalent

butane  C4H10  covalent

Explanation:

edmentum

help me with this attachment please​

Answers

Answer:

See explanation

Explanation:

Let us recall that the basic rule in writing balanced chemical reaction equations is that the number of atoms of each element on the right hand side of the reaction equation is the same of the number of atoms of the same element on the left hand side of the reaction equation.

The reaction of red hot iron and steam is written as follows;

3Fe + 4H2O → Fe3O4 + 4H2.

The decomposition reaction of ammonium dichromate is written as;

(NH4)2Cr2O7 → N2 + Cr2O3 + 4H2O

Reaction of aluminium, sodium hydroxide and water is as follows,

2Al + 2NaOH + 2H2O ----> 2NaAlO2 + 3H2

Reaction of potassium bicarbonate with sulphuric acid;

2KHCO3 + H2SO4 -------> K2SO4 + 2H2O + 2CO2

Reaction of zinc and sodium hydroxide is as follows;

Zn + 2NaOH→Na2ZnO2 + H2

Anhydrous aluminium chloride contain 20.2% by mass of aluminium show that the emprical formula for anhydrous aluminium chloride​

Answers

Answer:(d) has a high melting point because it has a giant covalent structure ... (i) Calculate the maximum mass of propyl ethanoate that can be made from 7.20 g of ethanoic ... (c) Anhydrous aluminium chloride contains 20.2% by mass of aluminium. (i) Show that the empirical formula for anhydrous aluminium chloride is A

Explanation:

Which of the following are examples of electromagnetic waves?


A.thunder, singing, tsunamis
B.sound, tsunamis, earthquakes
C.light, microwaves, radiation

Answers

Answer:

C

Explanation:

Electromagnetic waves travel at the speed of light and do not require molecules (gas, solid or liquid) to vibrate and travel.

Soundwaves when singing or from thunder vibrate particles to reach our ears and are known as mechanical waves.

Students measuring the mass of a substance record 1.127 g, 1.214 g, 1.304 g, and 1.184 g. Which other measurement of the substance's mass would be most precise?  A. 1.514 g  B. 1.205 g  C. 1.416 g  D. 1.384 g

Answers

Answer:1.205g

Explanation:

Calculate the poH of a solution at 25°C which contains
1 x 10^-10 M of hydronium ions.

Answers

Answer:

4.000   hope this helps :)

Can someone pls help I need this quick
Zinc has been added to dilute sulphuric acid. The two react together and a gas bubble forms. The gas that forms is hydrogen. Prove why the gas is hydrogen.

Answers

Answer:

Here's your answer

Explanation:

When we insert a burning matchstick near the mouth of gas jar the matchstick burns with a pop sound and produces a blue flame. This proves that the gas collected is hydrogen.

hope it helps

Which would have more mass: a mole of sodium or a mole of copper? How do you know?

Answers

Answer:

copper

Explanation:

so for this you can work out the mass for both and compare

so mass = moles × mr

so mass of sodium = 1 × 23= 23 g

and mass of copper = 1 × 63.5= 63.5 g

so copper have more mass :)


Performance Task #4.3
If you will cross a parent with black eye color (BB) and the other is
brown eye (bb), what will be the color of the eyes of their offspring?
BB
b
b
Ex. Rr - Round
Ir - oblong
Genotypic Ratio:
BB
bb-
%
R
rrr
rr
Phenotypic Ratio:
%
Rr
re
Genotypic Ratio:
50% Rr
Bb
b
b
50% IT
Phenotypic Ratio: 50% round
50% oblong
Bb -
bb-
Genotypic Ratio:
%
%
Phenotypic Ratio:
(continuation at the back)
%
I need answers pls, help me brainliest ko po maka ans ng tama, report nonsense thanks.

Answers

Answer:

The offspring are all black eye colored.

Explanation:

Since we have genes BB for black eye color and genes bb for brown eye color, crossing the genes, the resulting genotypes in the offspring is Bb, Bb, Bb and Bb. We note that all the genes have the dominant B gene. Since the black eye color dominant gene is present in all the offspring, the offspring are thus all black-eye colored.

So, If you will cross a parent with black eye color (BB) and the other is

brown eye (bb), the offspring are all black eye colored.

Au HSO3 nomenclatura

Answers

oWONIEN 8$!- monthenxie

Which of these is a measure of the average kinetic energy of the molecules of a material? A.heat B.temperature C.thermal energy D.bonding energy

Answers

Answer:

b temperature

Explanation:

Temperature is a measure of the average kinetic energy of the particles in a substance

12. Organelles allow eukaryotic cells to carry out more functions than prokaryotic cells.
True or false?

Answers

Answer:

True po

Explaination :

I hope it helps

The blood must keep moving round the body to keep the rate of diffusion high explains why

Answers

Answer:

red blood cells and diffusion.

Explanation:

this process involves red blood cells and diffusion. Red Blood cells (RBCs) are a type of blood cell whose role is to transport oxygen from the lungs to the peripheral tissues of the body. Oxygen diffuses from the alveoli of the lungs in to the RBC's, where it binds to hemoglobin.

Diffusion is a very important process within the human body and is essential to the transport of molecules within a number of organs including the lungs, kidneys, stomach and eyes. The lungs process millions of tiny air sacs that are called alveoli, each of which are in close contact with capillaries.

How many oxygen atoms are in the products of the balanced reaction below?
3Ca + 2AIPO4 + 2Al + Ca3(PO4)2
A. 12
B. 8
C. 3
D. 4

Answers

Answer:

B

Explanation:

production ca3(PO4)2

4x2=8

10. Give the number of protons, electrons, and neutrons in strontium-88.

O 38 protons, 38 electrons, and 88 neutrons

O 38 protons, 38 electrons, and 38 neutrons

O 38 protons, 38 electrons, and 50 neutrons

O 88 protons, 38 electrons, and 88 neutrons

Answers

Answer:

C.because protons and electrons are equal they will be 38 so neutron will be 50

How does an atom behave if it has a full octet of valence electrons?
O A. It is very stable.
O B. It is very reactive.
O c. It is unpredictable.
O D. It is a gas.

Answers

Answer:

A) Very stable.

Explanation:

A valence electron ring takes up to 8 valence electrons. If it has full rings, it is stable.

A) very stable this is ur anwswer

In a mass spectrum, there are two peaks, one at m/z 63.0 with percentage abundance 69.1% and another peak at m/z 65.0 with percentage abundance 30.9%. Determine the relative atomic mass (Ar) for this element, giving the answer to 3 significant figures (no units required).

Answers

Explanation:

hope the picture above help u understand:)

The relative atomic mass (Ar) of this element is approximately 63.6 (to three significant figures).

To determine the relative atomic mass (Ar) of the element, we use the following formula:

Ar = (m₁ × % abundance1 + m₂ × % abundance2) / 100

Where:

m₁ and m₂ are the masses of the isotopes (peaks) in the mass spectrum,

% abundance1 and % abundance2 are the percentage abundances of the corresponding isotopes.

Given information:

Peak at m/z 63.0 with a percentage abundance of 69.1%.

Peak at m/z 65.0 having a percentage abundance of 30.9%.

Calculate the weighted average mass of the element's isotopes.

Ar = (63.0 × 69.1 + 65.0 × 30.9) / 100

Ar = (4347 + 2009.5) / 100

Ar = 6356.5 / 100

Ar ≈ 63.565

Noe, let's round the calculated mass to three significant figures.

Ar = 63.6

So, the relative atomic mass (Ar) of this element is approximately 63.6 (to three significant figures). This means that the average mass of the element's atoms is approximately 63.6 times the mass of one-twelfth of a carbon-12 atom, which is the standard reference for atomic masses.

To know more about relative atomic mass here

https://brainly.com/question/25698972

#SPJ3

11. If two substances react and the temperature of the mixture decreases, the reaction
is a) Endothermic
b) Never going to happen unless it is heated
c) Exothermic
d) one that causes atoms to be destroyed

Answers

Answer:

a.endothermic reaction

2 A. Explain why these elements are all placed in Period 3 of the Periodic Table.​

Answers

Answer:

which elements??? more info please

Which of the following is a nonrenewable energy source? O A. Solar B. Hydroelectric C. Natural gas D. Biomass

Answers

Answer:

C. natural gas

Explanation:

Solar comes from the sun, which if it became nonrenewable, we would be dead. hydroelectric comes from water and Dams, which water is reproduced through rain. Biomass are things like leaves, which are seasonally reproduced.

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