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STatiana [176]
4 years ago
6

A sample of grape juice has a hydroxide ion concentration of 1.4 x 10−10 M.

Chemistry
2 answers:
Anon25 [30]4 years ago
8 0
The answer to this question on is 4.1
MrRa [10]4 years ago
6 0
It's Answer to this question is 4.1
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The combustion of 135 mg of a hydrocarbon produces 440 mg of CO2 and 135 mg H2O. The molar mass of the hydrocarbon is 270 g/mol.
NeX [460]

Answer:

Molecular formula = C20H30

Explanation:

NB 440mg = 0.44g, 135mg= 0.135g

From the question, moles of CO2= 0.44/44= 0.01mol

Since 1 mol of CO2 contains 1mol of C, it implies mol of C = 0.01

Also from the question, moles of H2O = 0.135/18= 0.0075mole

Since 1 mol of H2O contains 2mol of H, it implies mol of H = 0.0075×2= 0.015 mol of H

To get the empirical formula, divide by smallest number of mole

Mol of C = 0.01/0.01=1

Mol of H = 0.015/0.01= 1.5

Multiply both by 2 to obtain a whole number

Mol of C =1×2 = 2

Mol of H= 1.5×2 = 3

Empirical formula= C2H3

[C2H3] not = 270

[ (2×12) + 3]n = 270

27n = 270

n=10

Molecular formula= [C2H3]10= C20H30

5 0
3 years ago
If the temperature of an object is 335 K, how would this be expressed on the Celsius scale? A. 62°C B. 273°C C. 37°C D. 608°C
BaLLatris [955]
335k-273.15=61.85c If rounded then the answer is A
3 0
3 years ago
Read 2 more answers
PLEASE HELP ME
Andru [333]

Answer:

P4O10 + 6H2O → 4H3PO4

so 1,6,4

7 0
3 years ago
Explain to me why a pressure cooker does not explode.
trapecia [35]

it can with stand certain pressure inside, once it exceeds the pressure will be released by making a whistle....... hence it wont burst

4 0
3 years ago
Identify a predator from a Himalayan Mountain ecosystem. How else can this animal be classified in terms of feeding relationship
postnew [5]

Answer:

A snow leopard  is one of the top consumers in the Himalayas who lives in dens that are close to somewhere to look down to watch its prey. They also use it's large paws to climb up slopes and snow and a long tale to balance on thin spaces to catch markhhors.

Explanation:

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6 0
2 years ago
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