A. The energy stored in the natural gas is potential energy
B. The way to get that energy is by combusting it. It will give off energy in the form of heat.
Can’t really answer C-E
Answer:
a
Explanation:
ADAPTATIOnn but if thhere would be an option o all the above it would be that
Answer:
Option D is correct
Explanation:
The individual mass of reactants in the reaction are
Calcium Oxide (CaO) = amu
Carbon dioxide (CO2) amu
Since this reaction is a simple addition reaction in which no mass of the reactants is wasted. Also, no energy is released accompanied by conversion of mass into energy.
Hence, total mass of reactants would be equal to the mass of the product.
Thus, mass of calcium carbonate i.e CaCO3 is
amu
Hence, option D is correct
Answer:
Explanation:
To convert from moles to atoms, we must use Avogadro's Number. <u>Avogadro's Number</u>
- 6.022*10²³
- The number of particles (atoms, molcules, ions, etc.) in 1 mole.
- In this case, it is the number of atoms of lead.
1. Set up ratio
We can use Avogadro's Number as a fraction or ratio.
2. Convert atoms to moles
Multiply the given number of atoms by the ratio.
Flip the fraction so that the atoms of lead can cancel each other out.
3. Round
The original measurement of 4.75 had 3 significant figures (4, 7, and 5).
We must round our answer to 3 sig figs, which is the hundredth place for the number found.
The 7 in the thousandth place tells us to round the 8 up to a 9 in the hundredth place.
There are <u>7.89*10⁻⁴ moles of lead</u> in 4.75*10²⁰ atoms of lead.
Answer:
the Milky Way galaxy
Explanation:
It's between the Sagittarius and Perseus Arms of the Milky Way.