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Mrrafil [7]
3 years ago
10

Copper carbonate (CuCO3) reacts with hydrochloric acid (HCl) according to this equation:

Chemistry
2 answers:
Yuliya22 [10]3 years ago
6 0

Answer:

d

Explanation:

Pie3 years ago
3 0

Answer:

d

Explanation:

plato

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Len [333]
It will slowly rotten and turn brown
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4 years ago
Use an example how natural selection can lead to evolution
Eddi Din [679]
Natural selection leads to evolutionary change when individuals with certain characteristics have a greater survival or reproductive rate than other individuals in a population and pass on these inheritable genetic characteristics to their offspring.
3 0
3 years ago
ImTwo substances, A and B, initially at different temperatures, come into contact and reach thermal equilibrium. The mass of sub
kipiarov [429]

Answer:

Specific heat capacity of A is 1.05J/g°C

Explanation:

Hello,

In this question, we have to bodies in contact and there's transfer of energy (heat) between them. The heat loss in one body is equal to the heat gain in another body.

Heat loss in B = Heat gain in A

Data,

Mass of A = 6.44g

Initial temperature of A (T1) = 20.3°C

Mass of B = 25.1g

Initial temperature of B = 52.8°C

Final temperature after equilibrium is achieved (T3) = 46.7°C

Specific heat capacity of A (C1) = 1.17J/g°C

Specific heat capacity of B (C2) = ?

Heat loss in B = Heat gain in A

Q = mc∇T

Q = heat energy

M = mass of substance

C = specific heat capacity of the substance

∇T = change in temperature of the substance

M₂C₂(T₂ - T₃) = M₁C₁(T₃ - T₁)

Substitute the values into the variables and solve for C₁

25.1 × 1.17 × (52.8 - 46.7) = 6.44 × C₁ × (46.7 - 20.3)

179.1387 = 170.016C₁

Divide both sides by 170.016

C₁ = 179.1387 / 170.016

C₁ = 1.05J/g°C

The specific heat capacity of A is 1.05J/g°C

6 0
4 years ago
On number 2 if the atom has 3 protons,4 neutrons and 3 electrons what is the charge of the atoms nucleus?
laila [671]
0 is the correct answer.
7 0
3 years ago
How did astronomers precisely determine the length of an Astronomical<br> Unit in the 1960s?
kramer

Answer:

Astronomers use radar measurements, telemetry and exploration of solar system to get precise measurement of astronomical units.

Astronomers use parallax techniques. They measure the distance between the Earth and solar planets. Astronomers use parallax techniques to conduct parallax measurements which gave them accurate and precise values of the length of astronomical units

Explanation:

Astronomical unit is a unit length which is the average distance between the Earth and the sun which is about 150 millions kilometers.

Astronomers use radar measurements, telemetry and exploration of solar system to get precise measurement of astronomical units.

Astronomers use parallax techniques. They measure the distance between the Earth and solar planets. Astronomers use parallax techniques to conduct parallax measurements which gave them accurate and precise values of the length of astronomical units.

6 0
3 years ago
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