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vesna_86 [32]
3 years ago
5

What is neutron number for calcium ​

Chemistry
1 answer:
notka56 [123]3 years ago
5 0

Answer:

20 neutrons

Explanation:

(not really any just look at a periodic table)

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What is released in the process of an atom decaying from an excited level to a lower energy level?
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4 years ago
A chemical equation is shown below. pls and ty
makkiz [27]

Answer:

The given equation is not balanced.

Explanation:

Chemical equation:

3H₂ + 3Cl₂   →  HCl

The balanced equation always have equal number of atoms on both side of equation. In this equation on left side there are six atoms of chlorine and six atoms of hydrogen are present while on right side only one atom of hydrogen and one atom of chlorine are present.

The balanced equation always follow the law of conservation of mass.

According to the law of conservation of mass, mass can neither be created nor be destroyed in a chemical reaction.

It means reactant and product always have same mass.

The given equation can written as balanced equation as follows,

Balanced chemical equation:

3H₂ + 3Cl₂   →  6HCl

There are equal number of atoms of hydrogen and chlorine are present on both side of equation so it follow the law of conservation of mass.

8 0
3 years ago
How does a sample of water at 38 °C compare to a sample of water at 295 K?
Sidana [21]

Converting the temperature, 295 K from Kelvin to Celsius scale:

295 K - 273 = 22^{0} C

Water has a boiling point of 100^{0}C and a melting point of 0^{0} C

When we compare water at two different temperatures, 22^{0}C and 38^{0}C we can say that water is in liquid form at both these temperatures as both of them are quite below the boiling temperature and above the melting temperature.

The temperature difference between water at the given two temperatures = 38^{0}C - 22^{0}C = 16^{0}C

Water at 38^{0}C is at a higher temperature and so is warmer than water at a lower temperature of 22^{0}C (or 295 K).


7 0
3 years ago
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