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Vera_Pavlovna [14]
3 years ago
12

If a balloon at 10 oC goes from 30L to 2L, what is the final temperature?

Chemistry
1 answer:
ICE Princess25 [194]3 years ago
8 0
I think its the 3rd one 0.21
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If 41.38 g of sodium combines with
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I think it is 3 because Sus wiw word if rn
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Which elements in the periodic table are metalloids or have semimetallic properties?
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B, As only are metalloids or have semimetallic properties.
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Devise a way to separate a mixture of sand, salt, and iron filings. Write the procedure using a step-by-step method and explain
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1. Iron fillings are magnetic, so use a magnet to pull the iron fillings out of the mix.
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What is the measure of the efficiency of a chemical reaction? percent yield annual yield actual yield theoretical yield
artcher [175]

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Precent yield

Explanation:

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6 0
4 years ago
CaC2(s) + 2H2O(l) --> Ca(OH)2(aq) + C2H2(g) In the reaction above, 0.5487 grams of calcium carbide are completely consumed to
jasenka [17]

Answer:

239.7mL

Explanation:

Using the general gas equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas constant (0.0821 Latm/molK)

T = temperature (K)

The balanced chemical equation in this question is as follows:

CaC2(s) + 2H2O(l) --> Ca(OH)2(aq) + C2H2(g)

From the equation, 1 mole of CaC2 produces 1 mole of ethylene gas, C2H2.

Using mole = mass/molar mass

Molar mass of CaC2 = 40 + 12(2)

= 40 + 24

= 64g/mol

mole = 0.5487/64

mole = 0.00857mol of CaC2

Hence, 0.00857mol of CaC2 produced 0.00857mol of C2H2

Based on the information provided, n = 0.00857mol, T = 43°C = 43 + 273 = 316K, p = 0.926 atm

PV = nRT

V = nRT/P

V = 0.00857 × 0.0821 × 316/0.926

V = 0.222/0.926

V = 0.2397L

In mL, volume = 0.2397 × 1000

= 239.7mL

3 0
3 years ago
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