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1 year ago

Select all the statements that correctly describe a solution. Multiple select question.

Chemistry

1 answer:

motikmotik1 year ago

8 0

Answer:

B, D, C

Explanation:

the solution may have more than one solute, a solution is a homogenous mixture of 2 or more substances and not all solutions are liquid

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How many moles are found in 10.5 g of Pb?

deff fn [24]

Answer:

Number of moles = 0.05 mol

Explanation:

Given data:

Mass of Pb = 10.5 g

Number of moles of Pb = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of Pb is 207.2 g/mol.

Now we will put the values in formula.

Number of moles = 10.5 g/207.2 g/mol

Number of moles = 0.05 mol

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2 years ago

Is a burning log an exothermic or endothermic event if the log is the system?

ziro4ka [17]

Yes it is a exothermic reaction.

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2 years ago

Read 2 more answers

135 grams of sodium has ______ moles.<br><br> (Enter just the number for this one.)

just olya [345]

Answer : 135 grams of sodium has 5.869 moles.

Solution : Given,

Mass of sodium = 135 grams

Molar mass of sodium = 23 g/mole

Formula used :

$\text{Moles of sodium}=\frac{\text{Mass of sodium}}{\text{Molar mass of sodium}}$

Now put all the given values in this formula, we get

$\text{Moles of sodium}=\frac{135g}{23g/mole}=5.869moles$

Therefore, the moles of sodium present in 135 grams of sodium is, 5.869 moles.

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2 years ago

Why can strong winds lead to more flooding during Hurricane

VikaD [51]

All tropical cyclones can produce widespread torrential rains, which cause massive flooding and trigger landslides and debris flows.

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2 years ago

Each year as the weather gets cold, gray whales swim over 10.000 miles from arctic waters south to coastal areas of

Svetradugi [14.3K]

Answer:

external

migration

Explanation:

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3 years ago