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
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
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)