water vapor. It is when water is evaporated. it can also be steam.
<u>Ans: 650 J = 155 calories</u>
<u>Given:</u>
Energy in joules = 650 J
<u>To determine:</u>
The energy in calories
<u>Explanation:</u>
1 joule = 0.2388 calories
Therefore, 650 joules = 0.2388 calories * 650 J/1 J = 155 calories
NaOH
Na=23
O=16
H=1
SO,NaOH=23+16+1
NaOH=40g/mol
42% of 40=42/100x40
oxygen is the compound
density=mass/volume
1.30=mass/6
mass=7.8g
Baking a cake is a chemical reaction due to heat helps baking powder produce tiny bubbles of gas, which makes the cake light and fluffy. Heat also causes protein from an egg to change and make it firm.
Baking powder being CO2
NaHCO3 + NaHC4H4O4 ===> Na2C4H4O4 + CO2(g) + H2O
