Answer:
neutron, has no charge
Answer:
.0924 moles of NaCl
Explanation:
So you know you have 5.4 g of NaCl and you need to know how many moles there are in this amount of NaCl
- You'll need to find the atomic mass of the compound NaCl to help you solve for moles
- Sodium (Na) on the periodic table has a mass of 22.99
- Chlorine (Cl) on the periodic table has a mass of 35.45
Add these two together----> 22.99 + 35.45 = 58.44
Now you can calculate for moles
<u>Written-out method:</u>
<u>5.4 grams of NaCl | 1 mole of NaCl </u>
| 58.44 grams NaCl = .0924 moles of NaCl
<u>Plug into calculator method:</u>
(5.4 g of NaCl/ 58.44g NaCl= .0925 moles)
Answer:
18moles of H20
Explanation:
C5H12 + 8O2 —> 5CO2 + 6H2O
From the balanced equation,
1mole of C5H12 were consumed to produce 6moles of H2O.
Therefore, if 3 moles of C5H12 were consumed, it will produce = 3 x 6 = 18moles of H20
Answer:
The answer is: Chemical element
Explanation:
A chemical element refers to the chemical substance or species containing a fixed number of neutrons and protons in its nuclei. The atomic number of an element is equal to the number of protons.
All the matter present in the universe is composed of these chemical elements.The chemical and physical properties of the these elements are summarized in periodic table.
We know that the mass number is equal to the number of protons plus the number of neutrons. We also know that the atomic number is the same number as the number of protons. Therefore, we can solve for the number of neutrons with what we were given:
x + 28 = 71
x=43
There are 43 neutrons