Chemistry High School

15POINTS

What is acceleration? O A. A change in speed B. A change in speed or direction O C. A change in force O D. A change in force or energy​

Answers

Answer 1

A

acceleration is change in speed

Answer 2

Answer:

A. Change in speed

Related Questions

Helllppp meee!! Please

Answers

I believe it’s C I might be wrong

Answer:

a bus moves on a straight road then makes a right turn

Explanation:

yes

Th picture shows a model of cell.
What is the main function of the part labeled z in the model?
A. To hold and protect the cell's DNA
B. To store food and other materials inside the cell
C. To use energy from sunlight to make sugars
D. To provide the cell with energy for its activities

Answers

Answer:

The answer is the D. That's the Mitochondrion.

Explanation:

How many moles of copper are needed to react with sulfur to produce 0.25 moles of copper (i) sulfide according to the following reaction: 2 Cu + S = Cu2S

Answers

Answer:

0.5 mole

Explanation:

The equation for the reaction is given below:

2Cu + S —> Cu2S

We can calculate the mole of copper (Cu) needed to react with sulphur (S) to produce 0.25 mole of copper(I) sulfide (Cu2S) by doing the following:

From the balanced equation above,

2 moles of Cu reacted to produced 1 mole of Cu2S.

Therefore, Xmol of Cu will react to produce 0.25 mole of Cu2S i.e

Xmol of Cu = 2 x 0.25 = 0.5 mole

Therefore, 0.5 mole of copper (Cu) will react with sulphur (S) to produce 0.25 mole of copper(i)sulfide (Cu2S)

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