Answer:
if speed or direction changes then there is a change in velocity which is acceleration. Hope this helps!
Explanation:
Answer:
Where does the exchange of the blood in the veins and oxygen in the lungs take place?
ALVEOLI are the very small air sacs where the exchange of oxygen and carbon dioxide takes place. CAPILLARIES are blood vessels in the walls of the alveoli. Blood passes through the capillaries, entering through your PULMONARY ARTERY and leaving via your PULMONARY VEIN
Explanation:
Answer: D. sugar dissolves when placed in water.
Why:
Chemical properties/changes produce NEW substances.
So when sugar dissolves in water, it breaks down, but NOT to a chemical level that separates its elements. Therefore, it would still be sugar and will not create a new compound/element.
This results in the conclusion that when sugar dissolves in water, it is a physical property, NOT chemical.
Answer:
1. 0.662 M
2. 2.294 M
3. 0.357 M
Explanation:
The Molarity of a compound is simply defined as the mole of compound per unit litre of the solution. It can be obtained mathematically by the following equation:
Molarity = mole /Volume
With the equation above, let us calculate the molarity for the question given above.
1. Mole of CuSO4 = 0.49 mol Volume = 0.74 L.
Molarity of CuSO4 =?
Molarity = mole /Volume
Molarity of CuSO4 = 0.49/0.74
Molarity of CuSO4 = 0.662 M
2. Mole of Co(NO3)2 = 0.78 mol Volume = 0.34 L.
Molarity of Co(NO3)2 =?
Molarity = mole /Volume
Molarity of Co(NO3)2 = 0.78/0.34
Molarity of Co(NO3)2 = 2.294 M
3. Mole of K2Cr2O4 = 0.30 mol Volume = 0.84L.
Molarity of K2Cr2O4 =?
Molarity = mole /Volume
Molarity of K2Cr2O4 = 0.30/0.84
Molarity of K2Cr2O4 = 0.357 M
Answer:
A. mutation
Explanation:
mutation is called as change in genetic sequence (i.e, in DNA)
