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vova2212 [387]
3 years ago
15

What is a base used in toothpaste?

Chemistry
1 answer:
goldenfox [79]3 years ago
6 0

Answer: Option:C

Explanation:

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What is the mass in grams of 5.00moles of CH4?
anastassius [24]

Answer:

1. 80g

2. 1.188mole

Explanation:

1. We'll begin by obtaining the molar mass of CH4. This is illustrated below:

Molar Mass of CH4 = 12 + (4x1) = 12 + 4 = 16g/mol

Number of mole of CH4 from the question = 5 moles

Mass of CH4 =?

Mass = number of mole x molar Mass

Mass of CH4 = 5 x 16

Mass of CH4 = 80g

2. Mass of O2 from the question = 38g

Molar Mass of O2 = 16x2 = 32g/mol

Number of mole O2 =?

Number of mole = Mass /Molar Mass

Number of mole of O2 = 38/32

Number of mole of O2 = 1.188mole

6 0
3 years ago
How many ATOMS of OXYGEN are there in the following compound
STatiana [176]
6 Atoms!
Mg = 1 atom.
O = 4 atoms.
A = 1 atom.
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3 years ago
Anybody can help? <br> - 20 points
strojnjashka [21]

Answer:

I think its carbon because of all the chemicals being used in that air.

7 0
3 years ago
3. Explain the relationship between power, energy and time.
likoan [24]
There is a very simple relationship between the three. First off, power is the amount of energy used over a certain amount of time. Energy is the capacity of carrying out that power. Lastly, time depends on how much energy you have to exert the work.

Hope this helps :)
7 0
3 years ago
What atom or ion make up 2 protons and 10 electrons?
Gala2k [10]
The atom that is made up of two protons is He. The number of neutrons is also two. The number of electrons matters in the charge. So to make 10 electrons, we add 8 more. hence, 4/2 He 8-. 
8 0
3 years ago
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