CHEMISTRY MIDDLE SCHOOL

2 The change in the velocity of an object is defined as its

Answers

Answer 1

Answer:

Answer:

Acceleration is the rate of change in velocity

Answer 2

Answer:

Answer:

The rate of change of velocity of an object is defined as its acceleration

Related Questions

Paul placed an ice cube into a beaker on a hot plate. The ice cube changed from a solid to a liquid and then to a gas. During this process, which property of the ice cube remained unchanged
What is the Name of RbC2H3O2
2. The characteristic bright-line spectrum (color) of an element is produced whenA elections are ermitted by the nucleus as beta particlesB electrons move to higher energy levels** C electrons are gained by an atom inD. člectrons fall bàok to lower energy levels
Help me!!! Several small craters lie in the floor and on the walls of crater 2. Which is older,crater 2 or the smaller craters inside it?
which statement best summarizes gregor mendels contributes to our understanding of genetics and heredity

Velocity is the combination of which of the following? speed and momentum
force and direction
gravity and direction
speed and direction

Answers

speed and direction c:

A portion of the periodic table is shown. which element would have similar properties to sulfur?★ nitrogen

★ oxygen

★ fluorine

★ chlorine

Answers

oxygen

the answer is going to be oxygen. This is because on the periodic table, sulfur and oxygen are in the same group or "family" in the periodic table of elements.

The answer is oxygen as oxygen and sulfur are in the same “group” on the periodic table. They are both in group. 6

Which has a larger atomic radius Be or Ba

Answers

Ba has the larger atomic radius

Why does a group of warmer atoms take up more volume than a group of cooler atoms?

Answers

Warmer atoms expand. There is also more movement. This is also explained when putting it into terms with solid vs. gas. In a solid, the atoms vibrate, but they can't move very far because there is not a lot of space between them. In a gas, on the other hand, the atoms are spread apart, and they move very fast. Putting it into context with water, the steam (gas) version is hot, and the ice cube (solid) version is cold. Which one moves more freely? The gas.

Chromium(III) sulfate is a transition metal compound containing the metal chromium and the polyatomic ion sulfate.The oxidation state of chromium in this compound is
, and the chemical formula of the compound is

Answers

Answer:

a) oxidation number of chromium is +3

b) formula of the compound is Cr2(SO4)3

Explanation:

From the name of the compound, we can see that the oxidation state of chromium is +3

We know the sulphate ion to to be SO4^2-

According to the rules of writing the formula of compounds from valencies, the valency of chromium is 3 while that is the sulphate ion is 2.

The both species can now exchange valency

Cr2(SO4)3------- This is the correct formula of the compound

Answer:

The oxidation state is +3.

chemical formula of compound is Cr₂(SO₄)₃.

Explanation:

Calculation of oxidation state:

Cr₂(SO₄)₃

Cr= ?

The oxidation state of SO₄ = -2

2x + 3( -2) = 0

2x - 6 = 0

2x = 6

x = 6/2

x= 3

The oxidation state of Cr is +3.

The Cr has valency of 3 so three SO₄ will require while the valency of SO₄ is 2 so two Cr will require.

Cr×2 and SO₄×3

Cr₂(SO₄)₃

we know that oxidation state of Cr is +3 so (3×2) = 6

and the oxidation state of SO₄ is -2 so (-2× 3) = -6

6-6= 0

The overall charge is 0, the compound will be neutral.

What best describes charles law

Answers

The statement which best describes Charles law is: A) If volume increases, temperature increases.

What is Charles law?

Charles law states that when the pressure of an ideal gas is kept constant, the volume of a gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles law is given by this formula;

$V\;\alpha \;T\n\nV=kT$