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3 years ago

PLS HELP IT IS DUE TODAY IN 30 MINS PLS ANSWER 14 POINTS

Chemistry

2 answers:

Natali5045456 [20]3 years ago

6 0

Answer:

gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

Explanation:

hope that helps! (:

arlik [135]3 years ago

4 0

Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation. In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves

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which object would have more potential energy a bowling ball stored on a high shelf in a closet or a baseball on the same shelf?

AveGali [126]

Explanation:

Potential energy mathematically is P = m×g×h.

Where m= mass of the ball, g= acceleration. due to gravity which is constant

and h= the height which is also same.

Since, a bowling ball has more mass than a baseball, therefore, its potential energy would be higher generally.

A baseball is more likely to fall on your head because of its round shape.

4 0

3 years ago

Which substances are made up of polymers? DNA , a glass bottle , ice crystals , the proteins in hair , rubber car tires.

lana66690 [7]

Answer:

proteins in hair

Explanation:

proteins are polymers of amino acids. so if proteins are polymers of amino acids it means that proteins in hair are made of polymers

6 0

3 years ago

What's the energy transformation take place in electric kettle?

ludmilkaskok [199]

Answer is :

Thermal energy

6 0

3 years ago

An aqueous solution of ammonium sulfate is allowed to react with an aqueous solution of calcium nitrate.

Salsk061 [2.6K]

<u>Answer:</u> The net ionic equation contains $Ca^{2+}(aq.)$ ions

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of ammonium sulfate and calcium nitrate is given as:

$(NH_4)_2SO_4(aq.)+Ca(NO_3)_2(aq.)\rightarrow CaSO_4(s)2NH_4NO_3(aq.)$

Ionic form of the above equation follows:

$2NH_4^{+}(aq.)+SO_4^{2-}(aq.)+Ca^{2+}(aq.)+2NO_3^{-}(aq.)\rightarrow CaSO_4(s)+2NH_4^+(aq.)+2NO_3^-(aq.)$

As, ammonia and nitrate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

$Ca^{2+}(aq.)+SO_4^{2-}(aq.)\rightarrow CaSO_4(s)$

Hence, the net ionic equation contains $Ca^{2+}(aq.)$ ions

5 0

3 years ago

When magnesium is ignited in air, the magnesium reacts with oxygen and nitrogen.

vampirchik [111]

51: The only coefficient is in the first one i think and it would be a 3
52: Neon (Ne)
53: Mg has a low nuclear charge so all it's electrons would be lost in the electron shell, making the ion smaller than the atom.

8 0

3 years ago

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