As in math or
?
/.........
Answer: Since this is merely a Physical Change, it is improper to write it as a chemical equation.
In order to find out how many protons a sodium atom has, you have to look at the periodic table. Sodium is Na on the periodic table and you look for the number on the top of the symbol and you can see that it has 11 protons. To find out how many neutrons, you have to subtract 11 from the mass number, which is 23. 23-11 = 12.
12 neutrons; 11 protons
Answer:
1.02 (or 1.03 if rounded)
Explanation:
Given 16.4 grams of oxygen gas, you would want to write that down to set up your unit conversions.
16.4 g O2/1 * 1 mol of O2/31.998 g O2 * 2 mol H2O/1 mol O2
Multiply the numbers on the top and divide that by the product of the numbers on the bottom.
16.4 * 1 * 2 = 32.8
1 * 31.998 * 1 = 31.998
32.8/31.998 = 1.025...
Don't forget to consider the number of significant figures if it asks!
<u>Answer:</u> The amount of energy released by the reaction is 
<u>Explanation:</u>
To calculate the energy released, we use Einstein equation, which is:
where,
= difference between the masses of products and reactants = 3.86 g = 0.00386 kg (Conversion factor: 1 kg = 1000 g)
c = speed of light = 
Putting values in above equation, we get:
Hence, the amount of energy released by the reaction is
