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3 years ago

13

What is the mass of an atom with 8 protons, 8 electrons, and 8 neutrons?

1 answer:

mafiozo [28]3 years ago

5 0

Answer:An oxygen atom usually has 8 protons, 8 neutrons, and 8 electrons. Looking at the periodic table, oxygen has atomic number 8 and atomic weight 15.999.

Explanation:

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10. Copper(i) bromide reacts with magnesium metal: 2 CuBr + Mg → 2 Cu + MgBrz

velikii [3]

Answer:

72.6 grams

Explanation:

I got this answer through stoichiometry. For every 1 mole of Mg, 2 moles of CuBr are consumed. Because of this, multiply the moles of Mg by 2. Then, convert moles to grams.

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Which statements accurately describe the greenhouse effect? Check all that apply.

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Answer:

B C E

Explanation:

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Which of these is an example of a metaphor?

emmainna [20.7K]

Answer:

a i think

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3 years ago

suter [353]

Answer: The possible molecular formula will be $CO_2$

Explanation:

Mass of C= 27.3 g

Mass of O = 72.7 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{27.3g}{12g/mole}=2.275moles$

Moles of O = $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{72.7g}{16g/mole}=4.544moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{2.275}{2.275}=1$

For O = $\frac{4.544}{2.275}=2$

The ratio of C : O = 1: 2

Hence the empirical formula is $CO_2$

The possible molecular formula will be= $n\times CO_2$

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3 years ago

Write the trigonometric equation for the function with a period of 6. The function has a maximum of 3 at x = 2 and a low point o

White raven [17]

Answer:

Do you have a picture?

Explanation:

Sometimes, pictures are required to answer questions.

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