1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergio [31]
3 years ago
7

Which of the following is an element? A. carbon monoxide gas (CO) B. magnesium chloride salt (MgCl) C. zinc metal (Zn) D. hydroc

hloric acid (HCl)
Chemistry
2 answers:
kolbaska11 [484]3 years ago
8 0
The answer is C. Zinc metal (Zn)

All of the other answers are compounds with multiple elements in them.
barxatty [35]3 years ago
6 0
The answer is C) zinc (Zn)
You might be interested in
0.023 M solution of perchloric acid
kogti [31]
The original question is to find the pH and the pOH of 0.023 M of perchloric acid.

Answer:
pH = 1.638
pOH = 12.362

Explanation:
1- getting the pH:
pH can be calculated using the following rule:
pH = -log[H+]
Since the given solution is an acid, this means that [H+] is the same as the concentration of the solution.
This means that:
[H+] = 0.023
Substitute in the above equation to get the pH as follows:
pH = -log[0.023]
pH = 1.638

2- getting the pOH:
We know that:
pH + pOH = 14
We have calculated that pH = 1.638.
Substitute in the above equation to get the pOH as follows:
pOH + 1.638 = 14
pOH = 14 - 1.638
pOH = 12.362

Hope this helps :)
5 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs.
7nadin3 [17]

The correct answer is B.

Have a great day!

3 0
3 years ago
Read 2 more answers
How many grams of water, H20 are needed if 88<br> grams of CO2 gas are produced?
joja [24]

Answer:

Explanation:

If one mole of carbon monoxide has a mass of 28.01 g and one mole of carbon dioxide has a mass of 44.01 g , it follows that the reaction produces 44.01 g of carbon dioxide for every 28.01 g of carbon monoxide.

3 0
2 years ago
Which is a gas at room temperature?
dalvyx [7]

Answer:

Several of the nonmetals are gases in their elemental form. Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and chlorine (Cl, element 17) are all gases at room temperature, and are found as diatomic molecules (H2, N2, O2, F2, Cl2).

Explanation:

8 0
3 years ago
Read 2 more answers
What is the suitable way of investigating the different food colourings in some drinks ?
Firlakuza [10]

Answer:

by using the chromatography you can separate different color

6 0
2 years ago
Other questions:
  • What is the mass in grams of 1.24 mol of water
    9·1 answer
  • What are the three things chloroplasts needs in order to complete photosynthesis?
    13·1 answer
  •  A reaction takes place between two gases at 298 K. There are 2.0 moles of gas A and 3.0 moles of gas B. Which scenario would lo
    8·2 answers
  • Marvelous rides his bike with a constant speed of 6 miles per hour east. How long will he take to travel 21
    8·1 answer
  • True or false, rewrite it to make it true.
    14·1 answer
  • (in the image)
    14·1 answer
  • I cant seem to figure out ANY of these... help when you can pls :.)
    12·1 answer
  • CAN SOMEONE PLEASE HELP ME WITH THIS
    6·1 answer
  • Formula of atom bomb​
    11·1 answer
  • 2 moles of a gas have a pressure of 2 atm at a temperature of 300 K. What is the volume of the gas?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!