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monitta
3 years ago
15

What are answers to the questions shown below?

Chemistry
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

a

Explanation:

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Learning calculations in chemistry
olasank [31]
What question do u have?
7 0
3 years ago
A voltaic cell differs from an electrolytic cell in that a chemical cell uses
oksian1 [2.3K]

Answer:

3) an applied electric current

Explanation:

An electric source is used in an electrolytic cell.

7 0
3 years ago
Twenty-four grams of magnesium metal reacts with sixteen grams of oxygen gas to form magnesium oxide. According to the law of co
DedPeter [7]
The law of conservation of mass dictates that the total mass of reactants must be equal to the total mass of the products. Thus:
mass(MgO) = mass(Mg) + mass(O)
mass(MgO) = 24 + 16
mass(MgO) = 40 g

The third option is correct.
4 0
3 years ago
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Eight ounces (1 fl. Oz = 29.57 ml) of orange juice contains 160% of the recommended daily allowance of vitamin c (rda = 75-90 mg
vladimir1956 [14]
33 is the answer it’s 33
8 0
3 years ago
How many moles are present in 63.80L of oxygen gas, O2?
matrenka [14]

Answer:

2.85moles of oxygen gas

Explanation:

Given parameters:

Volume of oxygen gas  = 63.8L

Unknown:

Number of moles  = ?

Solution:

We assume that the gas is under standard temperature and pressure. To find the number of moles, use the expression below:

     1 mole of a gas at STP occupies a volume of 22.4L

 So;

       63.8L of oxygen gas will take up a volume of

              \frac{63.8}{22.4}   = 2.85moles of oxygen gas

4 0
3 years ago
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