Like Earth, the moon

Chemistry

1 answer:

dedylja [7]2 years ago

5 0

Um all? i’m confused

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The mass percent of solute in a solution containing 3.73 g KBr dissolved in 131 g of H2O is:

Elina [12.6K]

$\huge \underbrace \mathfrak \red{Answer}$

28%

Explanation:

mass of solute(KBr) = 3.73g

mass of solvent(H2O) = 131g

mass of solution = mass of solute + mass of solvent

= 3.73 + 131

= 134.73g

$\sf \large {mass \: percentage = \frac{mass \: of \: solute}{mass \: of \: solvent} \times 100} \\ \\ \sf mass \: percentage = \frac{3.73}{134.73} \times 100 \\ \\ \sf mass \: percentage = 0.028 \times 100 \\ \\ \sf mass \: percentage = 28\%$

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2 years ago

Measure out 2.87 moles of sodium chloride (Nacl) into a clean dry cup.

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Answer: weigh is m = n × M = 2.87 mol × 58.44 g/mol

Explanation: mass = amount of substance × molar mass

M((NaCl) = 22.99 +35.45

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2 years ago

How does ionization energy change as you

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Answer:

How does the energy required to remove an electron from an atom change as you move left to right in Period 4 from potassium through iron? ... A greater nuclear charge pulls the electrons closer to the nucleus, decreasing the atomic radius.

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2 years ago

State the total number of electrons occupying all the p- orbitals in one atom of chlorine .

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3 years ago

John roller skates 48 km in 3 hours. What is his average speed in kilometers

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Answer:16km/hr

Explanation:

48km/3hr= 16km/hr

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3 years ago

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