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Sindrei [870]
2 years ago
9

If you compare the mass of a

Chemistry
1 answer:
Varvara68 [4.7K]2 years ago
4 0

Answer:

the answer is (B)

the mass before equals the mass after

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Currently this lab is run qualitatively asking only for whether a solution is acidic, neutral, or basic. If quantitative informa
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The only PH range which is not covered by any of the given components of the universal indicator is 7.6-8.0

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Number of moles of the gas, Temperature and the volume of the gas.
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What is the Molar Mass of methylammonium bromide: Use the Periodic Table and round to the nearest hundredths.
egoroff_w [7]

The molar mass of methylammonium bromide is 111u.

<h3>What is molar mass?</h3>

The molar mass is defined as the mass per unit amount of substance of a given chemical entity.

Multiply the atomic weight (from the periodic table) of each element by the number of atoms of that element present in the compound.

Add it all together and put units of grams/mole after the number.

Atomic weight of H is 1u

Atomic weight of N is  14u

Atomic weight of C is  12u

Atomic weight of Br is  79u

Calculating molar mass of  2H_3NCH_3Br =2(1 x3+ 14+12+ 1 x 3 +79) = 111u

Hence, the molar mass of methylammonium bromide is 111u.

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2 years ago
2. Which energy source is considered a non-renewable resource?
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Answer:

The answer is D

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Although natural processes continually form fossil fuels, such fuels are generally classified as non-renewable resources because they take millions of years to form and the known viable reserves are being depleted much faster than new ones are being made. ... The use of fossil fuels raises serious environmental concerns.

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