All categories

3 years ago

12. help idk what to do at this point , I have notes and study till 3am , I still need help

Chemistry

2 answers:

uysha [10]3 years ago

6 0

It would be G bc that one only has 3 oxygens

GaryK [48]3 years ago

5 0

I’m not good at this but I’m guessing it’ll be the first one!

You might be interested in

A solution is made by dissolving 4.87 g of potassium nitrate in water to a final volume of 86.4 mL solution. What is the weight/

lara31 [8.8K]

Answer:

A solution is made by dissolving 4.87 g of potassium nitrate in water to a final volume of 86.4 mL solution. The weight/weight % or percent by mass of the solute is :

2.67%

Explanation:

Note : Look at the density of potassium nitrate in water if given in the question.

You are calculating weight /Volume not weight/weight % or percent by mass of the solute

Here the weight/weight % or percent by mass of the solute is asked : So first convert the VOLUME OF SOLUTION into MASS

Density of potassium nitrate in water KNO3 = 2.11 g/mL

$density=\frac{mass}{volume}$

Density = 2.11 g/mL

Volume of solution = 86.4 mL

$2.11=\frac{mass}{86.4}$

$mass = 2.11\times 86.4$

$mass=182.3grams$

Mass of Solute = 4.87 g

Mass of Solution = 183.2 g

w/w% of the solute =

$= \frac{mass\ of\ solute}{mass\ of\ solution}\times 100$

$=\frac{4.87}{183.2}\times 100$

w/w%=2.67%

8 0

3 years ago

What phase of matter is oxygen at room temperature

Vedmedyk [2.9K]

Gas

good luck mate :)

8 0

3 years ago

Salts usually have a low melting point

Svetradugi [14.3K]

Yes they do if that was your question

8 0

3 years ago

Read 2 more answers

Which of the following is a chemical property of water? It ___________.

lbvjy [14]

The answer is A beautiful

4 0

3 years ago

What are the basics of chemistry

Novay_Z [31]

In studying chemistry, one should learn how to read the periodic table and periodic trends in the table.. Of course, you should also know the abbreviations of each element in it so that you can identify what element is in chemical structures. Memorizing and knowing it by heart is the best way. You should also study what we call chemical nomenclature which is naming combinations of elements. Elements when combined may form ionic compounds, bonds or acids. Knowing what element reacts with another will also be necessary that's why the concept of chemical reactions must be further studied.

5 0

3 years ago