CHEMISTRY HIGH SCHOOL

Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.24 J/g-K, what is the specific heat of the 1st block?

Answers

Answer 1
Answer:

Answer:

0.64 J/g-K

Explanation:

Solving this question relies on the relization that both blocks receive the same amount of energy but of course their temperature cannot rise by the same amount even if you had the same mass of both because they have different specific heat capacities.

amount of energy received by block 1 = amount of energy received by block 2

specific heat of block 1 * ΔT of block 1 = specific of  block 2 * ΔT of block 2

C * 3 = 0.24 * 8

C = 0.64 J/g-K

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Answers

a explaination of some aspect of the natural world obtained by the scientific method 

How many protons does hydrogen have?

Answers

Hello there!

Hydrogen has one proton because the number of protons in an atom is equal to the atomic number of the element. S ince hydrogen's atomic number is 1, it has one proton.

I hope that's help !

Answer:1

Explanation:

hydrogen only has 1

Which element has a grater atomic radius ?phosphorus or bismuth?

Answers

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Mg(s) + 2HCl(aq) mc019-1.jpg H2(g) + MgCl2(aq)What is the most likely effect of an increase in pressure on this reaction?



The reactant surface area increases.

The reaction rate decreases.

The reaction is not affected at all.

The reaction stops completely.

Answers

The increase in pressure alters the equilibrium of the reaction. In this case, the number of gaseous products in the reactant side is zero while the product side contains 1 gaseous product. The increase in pressure favors the side with less number of gaseous molecules which is the reactant side. Hence, the reaction rate decreases. 

Answer:

The increase in pressure alters the equilibrium of the reaction. In this case, the number of gaseous products in the reactant side is zero while the product side contains 1 gaseous product. The increase in pressure favors the side with less number of gaseous molecules which is the reactant side. Hence, the reaction rate decreases.

Explanation:

What mass of oxygen gas contains the samenumber of moles as 56g of sulphur?
(Relative atomic mass: S=32,0=16)
(A) 0.56 g
B) 5.6 g
(C) 56 g
C) 560g

Answers

The mass of oxygen gas contains the same number of moles as 56g of sulphur is 56g

Calculation,

Number of moles of sulphur = given mass/ molar mass of sulphur

Number of moles of sulphur = 56/ 32 moles

Number of moles of sulphur = 1.75 moles

According to question,

Number of moles of sulphur = Number of moles of oxygen(O2)

So, Let mass of oxygen be X.

Number of moles of oxygen = X/16×2 = 1.75 moles

Mass of oxygen (X) = 1.75×16×2 grams

Mass of oxygen (X) = 56 grams

What is moles ?

The 6.022×1023 of chemical species like an electrons, molecules atoms, ions etc is called moles

To learn more about moles here.

brainly.com/question/26416088

#SPJ3

Answer:

C. 56 g

Explanation:

56 g S (1 mol S/ 32 g) = 1.75 mol S

1.75 mol O2 (32 g/ 1 mol O) = 56 g O2

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b. activation energy
d. chemical energy

Answers

When a reaction starts, activation energy is needed. 

Answer: b. activation energy
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