3 years ago

You are measuring how many liters of oxygen are in a container. which of the following are you measuring?

Chemistry

1 answer:

svetoff [14.1K]3 years ago

8 0

Answer:

Explanation:

liters is a measure of volume, it is an SI accepted metric system unit

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Flowers start as a sprout. Opinion Fact

Harman [31]

Answer:

FACT!!!!!!!!!!

Explanation:

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3 years ago

A certain substance X has a normal freezing point of -6.4 C and a molal freezing point depression constant Kf= 3.96 degrees C.kg

Brut [27]

Answer: $1.0\times 10^2g$

Explanation:

Depression in freezing point is given by:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f=T_f^0-T_f=(-6.4-(13.6))^0C=7.2^0C$ = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte like urea)

$K_f$ = freezing point constant = $3.96^0C/m$

m= molality

$\Delta T_f=i\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}$

Weight of solvent (X)= 950 g = 0.95 kg

Molar mass of non electrolyte (urea) = 60.06 g/mol

Mass of non electrolyte (urea) added = ?

$7.2=1\times 3.96\times \frac{xg}{60.06 g/mol\times 0.95kg}$

$x=1.0\times 10^2g$

Thus $1.0\times 10^2g$ urea was dissolved.

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4 years ago

Write the electron configurations for each of the following elements:

Stolb23 [73]

Answer:

(a) E.C - 2,8,8,3
(b) E.C - 2,8,8,4
(c) E.C - 2,8,8,6
(d) E.C - 2,8,8,8
(e) E.C - 2,8,8,8,18

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4 years ago

PLEASE PLEASE BRAINLIEST HELP ME PLEASE SOMEONE VARY SMART PLEASE SOMEONE THAT IS ACE PLEASE OR AN EXPERT OR SOMEONE FROME THE L

ValentinkaMS [17]

Answer:

1: A

2: C

3: D

4: D

5: B

Explanation:

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4 years ago

Read 2 more answers

which of the following electron configurations belong to an element that is the most chemically reactive

True [87]

It's Fluorine (non-metal) whose E.C. is 1s2, 2s2, 2p5

& Cesium (metal) whose E.C. is [Xe] 6s1

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3 years ago