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Vinvika [58]
2 years ago
13

Y’all know I’m adopted yup and I jus finally got the parents I’ve wanted my whole life❤️ thank u all besties

Chemistry
1 answer:
tatiyna2 years ago
7 0

I'm glad for you! Best of luck in life tbh

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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
How many moles of MgS2O3 are in 223 g of the compound
KengaRu [80]
1.63 moles since 1 mole is equal to 136.4332 grams
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3 years ago
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Which conclusion could be made from Ernest Rutherford’s gold foil experiment?
boyakko [2]

The conclusion was that there must be space between the particles of an atom. The way he knew this is because while some of the radiation reflected off of the gold foil, other radiation went right through it.

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The answer to your question is Selenium

Explanation:

The origin of the names of the elements comes from different origins

For example

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Planets, 4 elements took their names from the planets.

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The name of Selenium comes from the greek that means moon.

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b) velocity.

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d)change in velocity, change in direction, change in both velocity and direction.

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