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3 years ago

True or false? Molecules are made of atoms of one type

Chemistry

2 answers:

Olegator [25]3 years ago

4 0

Answer:

false

Explanation:

egoroff_w [7]3 years ago

3 0

False molecules not made of atoms

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What is the term for combining 2 or more atoms together?

Vladimir [108]

Compound is e answer

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3 years ago

Suppose you wanted to dissolve 106 g of Na2CO3 in enough H2O to make 6.00 L of solution.

Bezzdna [24]

Molar mass of Sodium Carbonate is 106, molarity is 1.0M. Seriously just look at a periodic table this is easy stuff.

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3 years ago

Read 2 more answers

2.17 in to 10^23 molecules of Br 2 to moles

KiRa [710]

I don't get what you are saying... Can you reword it?

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3 years ago

A vertical cylindrical tank contains 1.80 mol of an ideal gas under a pressure of 0.300 atm at 20.0°C. The round part of the tan

frez [133]

Answer:

Part A $m = 97.37$ Kg

Part B $H = 4.59$ meters

Explanation:

Part A

Pressure is equal to force per unit area

$P = \frac{F}{A}$

Here force is equal to the weight of the piston

Thus

$P = \frac{m*g}{A}$

On rearranging the equation, we get -

$m = \frac{PA}{g} \\$ $m = \frac{P\pi r^2}{g}$

Substituting the given values we get

$m = \frac{0.3*1.013*10^5*0.1^2}{9.8} \\m = 97.37$

Part B

We know that

$V = \pi r^2h\\$

On substituting the given values we get -

$pV = nRT\\V = \frac{nRT}{p}$

$V = \frac{1.8*8.314*293}{0.3039*10^5} \\V = 0.1442 m^3$

Height

$= \frac{V}{\pi r^2} \\= \frac{0.1442}{\pi 0.1^2} \\= 4.59$

4 0

3 years ago

A chemist must dilute of aqueous aluminum chloride solution until the concentration falls to . He'll do this by adding distilled

marshall27 [118]

Answer:

0.257 L

Explanation:

The values missing in the question has been assumed with common sense so that the concept could be applied

Initial volume of the AICI3 solution $=23.1 \mathrm{mL}$

Initial Molarity of the solution $=833 \mathrm{mM}$

Final molarity of the solution $=75.0 \mathrm{mM}$

Final volume of the solution $=?$

From Law of Dilution, $M_{f} V_{f}=M_{i} V_{i}$

$\Rightarrow V_{f}=\frac{M_{i} V_{i}}{M_{f}}=\frac{833 \mathrm{mM} \times 23.1 \mathrm{mL}}{75.0 \mathrm{mM}}=256.564 \mathrm{mL}=0.256564 \mathrm{L}=0.257 L$

Final Volume of the solution $=0.257$

7 0

3 years ago