All categories

2 years ago

Plz someone help me with this!

Chemistry

1 answer:

Genrish500 [490]2 years ago

4 0

4 is sound energy and electrical 5 is nuclear energy 5 is mechanical

You might be interested in

Colors of light with shorter wavelengths - A: have less energy than colors with longer wavelengths Strike Reset B: have more ene

dezoksy [38]

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

tinyurl.com/wpazsebu

6 0

2 years ago

When a solution of 0.1 M Mg(NO3)2 was mixed with a limited amount of aqueous ammonia, a light white, wispy solid was observed, i

Ipatiy [6.2K]

<u>Answer:</u> The net ionic equation is written below.

<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 magnesium nitrate and aqueous ammonia (ammonium hydroxide) is given as:

$Mg(NO_3)_2(aq.)+2NH_4OH(aq.)\rightarrow Mg(OH)_2(s)+2NH_4NO_3(aq.)$

A white precipitate of magnesium hydroxide is formed in the above reaction.

Ionic form of the above equation follows:

$Mg^{2+}(aq.)+2NO_3^-(aq.)+2NH_4^+(aq.)+2OH^-(aq.)\rightarrow Mg(OH)_2(s)+2NH_4^+(aq.)+2NO_3^-(aq.)$

As, ammonium 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:

$Mg^{2+}(aq.)+2OH^-(aq.)\rightarrow Mg(OH)_2(s)$

Hence, the net ionic equation is written above.

8 0

3 years ago

PLEAS HURRY IM TIMED If something moves around and takes the shape of the container it is in, it is most likely a

den301095 [7]

Gas and liquid both take the shape of their container. The difference is gas molecules equally fills the space. Is there any more information?

7 0

2 years ago

Read 2 more answers

The boat shown in the photo below is moving along at a constant 20 miles per hour. Is the boat accelerating? Question 3 options:

SVETLANKA909090 [29]

Answer:

Explanation:

If its going at a constant speed it will not accelarate wich means to speed up.

4 0

2 years ago

Convert mass to moles for both reactants. (Round to 2 significant figures.)

shepuryov [24]

Mass = mr x moles
Mr of CuCl2 = ( 63.5) + ( 35.5 x 2) = 134.5
2.5 = 134.5 x moles
2.5 / 134.5 = moles
Moles = 0.019 (2DP)

0.25g of Al
Mr of Al = 27
0.25 = 27 x moles
0.25/ 27 = 0.0093 moles (2sf)

Hope this helps :)

6 0

3 years ago

Read 2 more answers