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3 years ago

6

Please helpPlease help

1 answer:

deff fn [24]3 years ago

3 0

A)3 bcuz paper filters are used to separate solids from liquids

b) 2 bcuz it is a process of separating a pure liquid from a mixture of other liquids.And it works when it has different boiling point

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Which oneeee is ittt!!!!

Marysya12 [62]

Answer:

Disagree.

Explanation:

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3 years ago

Read 2 more answers

WILL GIVE BRAINIEST ANSWER A chemical equation has different numbers of atoms on the left and right sides.

Alinara [238K]

Answer:

Unbalanced

Explanation:

You need to have the same number of atoms on both sides for it to be balanced

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1 year ago

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3 years ago

Calculate the molarity of the two solutions.

daser333 [38]

1. 0.33 M

2. 0.278 M

<h3>Further explanation</h3>

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

$\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}$

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

1. 0.350 mol of NaOH in 1.05 L of solution.

n=0.35

V=1.05 L

Molarity :

$\tt M=\dfrac{0.35}{1.05}=0.33$

2. 14.3 g of NaCl in 879 mL of solution.

mol NaCl(MW=58.5 g/mol) :

$\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{14.3~g}{58.5~g/mol}=0.244$

Molarity :

$\tt M=\dfrac{0.244}{0.879~L}\\\\M=0.278$

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3 years ago

Do protons determine isotopes

Bezzdna [24]

Answer:

No

Explanation:

Protons determine the type of element it is which the number of protons.

Isotopes are determined by the same elements with the same amount of protons, but different number of neutrons.

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3 years ago