Imagine the earth's hydrosphere began to dry up and disappear. all of the following would be affected except

Chemistry

2 answers:

RoseWind [281]4 years ago

6 0

Answer most suited would be A

katen-ka-za [31]4 years ago

3 0

A is right. I just took the test on plato.

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A 100.0-g bar of gold is heated from 25 ∘c to 50 ∘c during which it absorbs 322 j of heat. assume the volume of the gold bar rem

miskamm [114]

We can use the heat equation,

Q = mcΔT

Where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).

Q = 322 J

m = 100.0 g

c = ?

ΔT = (50 - 25) °C = 25 °C

By applying the formula,

322 J = 100.0 g x c x 25 °C

c = 322 J / (100.0 g x 25 °C)

c = 0.1288 J g⁻¹ °C⁻¹

Hence, the specific heat of gold is 0.1288 J g⁻¹ °C⁻¹.

5 0

3 years ago

Read 2 more answers

Element compound2. Select all the compounds from the following elements

bulgar [2K]

<u>Answer:</u> $Fe_2O_3$ and $C_2H_4O_2$ are the compounds.

<u>Explanation:</u>

A chemical compound is defined as a chemical substance that is formed by the combination of two or more atoms of different elements which cannot be separated by any physical means but when chemically treated, they decompose into their parent elements.

For example, water is made up of hydrogen and oxygen. This compound is a liquid and its individual components are gases. When water is decomposed, it forms hydrogen and oxygen gas.

For the given options:

He(Helium) is an element formed by the combination of only type of atoms.

$O_2$ and $P_4$ are molecules of same element.