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storchak [24]
2 years ago
8

What is the pH of a 4.5x10-6 M solution of HCl.

Chemistry
1 answer:
STALIN [3.7K]2 years ago
4 0
I hope this helps it’s not the exact answer but it can help you

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Find the final equilibrium temperature when 15.0 g of milk at 13.0 degrees c is added to 148 g of coffee with a temperature of 8
user100 [1]

According to zeroth law of thermodynamics, when two objects are kept in contact, heat (energy) is transferred from one to the other until they reach the same temperature (are in thermal equilibrium). When the objects are at the same temperature there is no heat transfer.

So, at equilibrium, q_{lost}=q_{gain},  q_{lost}= q_{milk} + q_{coffee}

q=m×c×T, where q = heat energy, m = mass of a substance, c = specific heat (units J/kg∙K), T is temperature

q_{lost}= (15X13X4.19)+(148X88.3X4.19), (15+148)X4.19XT_{final}=(15X13X4.19)+(148X88.3X4.19)

T_{final}= 81.37 ° C

6 0
3 years ago
A balloon (approximate as a sphere) is inflated such that its
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Answer: 1436 mL

Explanation: 4/3 • 3.14 • 7^3 <— calculate

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3 years ago
Which element, represented by X, reacts with oxygen to produce the compound X2O?
natali 33 [55]

Answer:

lithium

Explanation:

this is because lithium has a valency of 1 and oxygen has a valency of 2 thereby exchanging valency to create Li²0

7 0
3 years ago
How many miles can you drive, if your car gets 21.3 miles per gallon and you have 12.0 gallons of gas?
Travka [436]

Answer:

255.6

Explanation:

If you have 12 gallons and get 21.3mpg,

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-If you need to estimate, round up to 256 miles.

6 0
3 years ago
What are the best topics to write a project work on EVS and Chemistry​
professor190 [17]

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It is better to do chemistry

Explanation:

So that you will learn more of chemicals

6 0
2 years ago
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