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Sever21 [200]
3 years ago
13

........URGENT PLEASE HELP............

Chemistry
1 answer:
Yuri [45]3 years ago
6 0

Answer:

12.0778

Explanation:

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DiKsa [7]
CH3COH(CH3)2; (CH3)3COH is the answer. Please let me know if this helps.
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What volume of 1.5M NaOH is needed to provide 0.75 mol of NaOH?
lutik1710 [3]
1.5M NaOH so we've 1.5 moles of NaOH in 1L of solution

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1.5 moles of NaOH ------------in------------- 1000 ml
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<em><u>answer: C</u></em>
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3 years ago
10.0 grams of water are heated during the preparation of a cup of coffee 1.0x 103 j of the heat are added to the water. which is
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<u>Answer:</u> The final temperature of the coffee is 43.9°C

<u>Explanation:</u>

To calculate the final temperature, we use the equation:

q=mC(T_2-T_1)

where,

q = heat released = 1.0\times 10^3J=1000J

m = mass of water = 10.0 grams

C = specific heat capacity of water = 4.184 J/g°C

T_2 = final temperature = ?

T_1 = initial temperature = 20°C

Putting values in above equation, we get:

1000J=10.0g\times 4.184J/g^oC\times (T_2-20)\\\\T_2=43.9^oC

Hence, the final temperature of the coffee is 43.9°C

6 0
3 years ago
How many Joules does it take to raise 1 g of water 2°C
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Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C. Thus, a liter (1000g) of water that increased from 24 to 25°C has absorbed 4.18 J/g°C x 1000g x 1°C or 4180 Joules of energy.

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10 elements compose the bulk of rock forming minerals
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