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3 years ago

How can you tell if a substance is a mixture or a compound

Chemistry

1 answer:

s344n2d4d5 [400]3 years ago

3 0

Answer:

If a substance can be separated into its elements, it is a compound. If not it is a mixture.

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Which scientist was the first to conclude through experimentation that atoms contain most of their mass in a small, dense nucleu

AURORKA [14]

Answer:

Ernest Rutherford

Explanation:

Ernest Rutherford was the first to conclude experiments

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3 years ago

How many grams of sodium chloride are present in a 0.75 m solution with a volume of 500.0 milliliters?

nlexa [21]

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3 years ago

Explain the difference between an organic compound and a hydrocarbon

VLD [36.1K]

An organic compound<span> is any member of a large class of gaseous, liquid, or solid chemical </span>compounds whose molecules contain carbon and <span>a hydrocarbon is compound of hydrogen and carbon, such as any of those that are the chief components of petroleum and natural gas.</span>

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3 years ago

1. The maximum recommended amount of citric acid (H3C6H5O7; the 3 hydrogens listed first are the acidic hydrogens – the only hyd

Lisa [10]

The density has been given as the mass of the substance per volume of the solution. The mass of citric acid in the bottle has been 1.22 grams.

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

Percent mass can be given as the mass of substance in the total mass of the solution.

The volume of the face serum has been 250 mL, and the density is 0.979 g/mL.

The mass of face serum in the bottle has been:

$\rm Density=\dfrac{Mass}{Volume}\\ 0.979\;g/mL=\dfrac{Mass}{250\;mL}\\ Mass=244.75\;g$

The total mass of face serum has been 244.75 grams.

The percent mass of citric acid in face serum is 0.5%. This states the presence of 0.5-gram citric acids in 100 grams sample.

The mass of citric acid in the face serum sample is given as:

$\rm 100\;gram\;sample=0.5\;g\;H_3C_6H_5O_7\\\\244.75\;grams\;sample=\dfrac{0.5}{100}\;\times\;244.75\;grams\; H_3C_6H_5O_7\\\\244.75\;grams\;sample=1.22\;grams\;H_3C_6H_5O_7$

The mass of citric acid present in 250 mL serum sample has been 1.22 grams.

Learn more about percent mass, here:

brainly.com/question/5394922

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2 years ago

Turgor, an internal stimulus, refers to —

VladimirAG [237]

Answer:

which has a lower freeging point oxgyen or ethanol

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3 years ago