Which of the following best represents the general form of a chemical equation?

Pls help i will give brainliest :)))) love youuuu

In-s [12.5K]

Answer:

i think the answer is C

Explanation:

if wrong im sorry

8 0

2 years ago

What is a thermal insulation material that is no longer used because of formaldehyde gas emission?

Ludmilka [50]

Urea Formaldehyde Foam Insulation is the thermal insulation material that is no longer used because of formaldehyde gas emission

Urea Formaldehyde Foam Insulation is mixture of urea formaldehyde resin, foaming acid agent, and a propellant used in the 1970s for insulating purposes.

It was specifically designed to insulate the areas of the building that were hard to access. Unlike regular process, it was sprayed into the walls by using holes.

It is no longer used because it caused a raise in the formaldehyde gas in the residence. This gas caused irritations to the people living in the building. Residents started to report health issues like respiratory problems, and eyes, nose, throat irritation.

If you need to learn about the formaldehyde gas, click here.

brainly.com/question/14645797?referrer=searchResults

#SPJ4

7 0

2 years ago

What is the electron configuration of beryllium?

Vlad1618 [11]

Here is your answer:

The amount of electrons that the element Beryllium has is: 4

Reason:

Beryllium atomic number is 4

Therefore the amount of protons and electrons Beryllium has is 4

Your answer is 5.

Hope this helps.

8 0

3 years ago

Why is NH3 polar but CH4 non polar

Alex787 [66]

Answer:

Explanation:

Nitrogen has a lone pair of electrons. That would mean that NH3 is minus at the left end in this case.

H

:N H

H

Methane has its Hs 90 degrees (approximately apart.

H

H C H

H

The pulling forces on the methane cancel each other out. When that happens the chemical is non polar.

6 0

3 years ago

A student has two solutions of a substance. Solution-1: 25M, 400mL, and Solution-2: 30M, 300 ml. What is the molarity of the fin

castortr0y [4]

Answer:

The molarity of the final solutions if these two solutions are mixed is 27.14 $\frac{moles}{L}$

Explanation:

Yo know:

Solution-1: 25M, 400mL
Solution-2: 30M, 300 mL

Molarity being the number of moles of solute per liter of solution, expressed by:

$Molarity (M)= \frac{number of moles}{volume}$

You can determine the number of moles that are mixed from each solution as:

Number of moles= Molarity*Volume

So, being 1 L=1000 mL, for each solution you get:

Solution-1: being 0.400 L=400 mL ⇒ 25 M* 0.400 L= 10 moles
Solution-2: being 0.300 L=300 mL ⇒ 30 M* 0.300 L= 9 moles

When mixing both solutions, it is obtained that the volume is the sum of both solutions:

Total volume= volume solution-1 + volume solution-2

and the number of total moles will be the sum of the moles of solution-1 and solution-2:

Total moles= moles of solution-1 + moles of solution-2

So the molarity of the final solution is:

$Molarity (M)= \frac{moles of solution 1 + moles of solution 2}{Volume solution 1 + Volume solution 2}$

In this case, you have:

moles of solution-1: 10 moles
moles of solution-2: 9 moles
volume solution-1: 0.400 L
volume solution-2: 0.300 L

Replacing:

$Molarity (M)=\frac{10 moles + 9 moles}{0.400 L + 0.300 L}$

Solving:

$Molarity (M)=\frac{19 moles}{0.700 L}$

Molarity= 27.14 $\frac{moles}{L}$

The molarity of the final solutions if these two solutions are mixed is 27.14 $\frac{moles}{L}$

4 0

3 years ago