1. The burning of propane creates different substances: propane and oxygen combine to create water and carbon dioxide:
<span><span>C<span>3</span>H<span>8</span></span> + 5 <span>O<span>2</span></span> becomes 3 CO2 + 4 <span>H<span>2</span>O</span> + heat
</span><span>
2. When NaCl melts, it is changing state, but it is still the same NaCl.
3. When gaseous CO2 deposits it is changing state, but it is still the same CO2.
4. When (presumably liquid) water solidifies, it is changing state, but it is still the same water.
So the answer is 1.</span>
Answer:
work done = force multiplied by distance covered,which is 500n multiplied by 20 m= 10000nm
power= work done/time
p= 10000/10
p=1000
Answer:
Explanation:
Hello,
In this case, since hydrochloric acid and barium hydroxide are in a 2:1 molar ratio, for the neutralization, the following moles equality must be obeyed:
In such a way, in terms of molarities and volumes, we can compute the required volume of hydrochloric acid as shown below:
Besr regards.
Answer:
B) The molecules were closer together when the juice pop was frozen.
