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
Nadusha1986 [10]
3 years ago
10

Help please?? I’m confused

Chemistry
1 answer:
Nady [450]3 years ago
3 0
It’s c. O stands for oxygen and h stands for hydrogen. They both do play in the roll
You might be interested in
How could the survivors about starting a fire?
joja [24]

Answer:

The ancient Greeks believed that fire was one the four basic elements that composed all things in the universe. In the mythology of virtually every culture, fire is a sacred substance that gives life or power. Fire is not, in fact, a substance. When you gaze at the leaping flames of a campfire, you’re observing not an object, but a process – a chemical reaction. It’s the same chemical reaction that occurs when a cut apple left on the counter turns brown, when silver tarnishes or when an iron nail rusts.

That process is oxidation: combining oxygen with another substance. The defining difference between a fire and your half-eaten apple is speed: fire is an oxidation process that happens very fast, so that light, heat and sound are released — often with enough force and majesty to justify the ancients’ reverence.The sudden release of energy causes temperatures to rise, sometimes by thousands of degrees. And it also results in smoke, the toxic waste of fire’s leftovers.

The fire triangle and the fire tetrahedron

Fire TetrahedronThe fire triangle identifies the three needed components of fire:

fuel (something that will burn)

heat (enough to make the fuel burn)

and air (oxygen)

Explanation: i hope this helps sry its long

6 0
3 years ago
How many molecules are there in 2.30 grams of NH3
mixer [17]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We calculate as follows:

2.30 g NH3 (1 mol / 17.03 g ) (</span>6.022 x 10^23 molecules / 1 mol ) = 8.13x10^22 molecules
7 0
3 years ago
WILL GIVE BRAINLIEST AND POINTS!!
Aleksandr [31]

Answer:

H2O= +2

CCl4 = +4

Na+= 0

CuCl2= -2

5 0
3 years ago
When comparing the two elements K and Ge , the more metallic element is__________ based on periodic trends alone.
Inessa [10]

Answer:

Option D and Option B

When comparing the two elements K and Ge , the more metallic element is_____K_____ based on periodic trends alone.

When comparing the two elements Sb and Pb , the more metallic element is_____Pb______ based on periodic

Explanation:

The metallic characteristic increases when we move down a column in a periodic table or when we move left in the row.

Potassium and Germanium are located on the same row, but germanium lies on the right side of potassium. Thus, potassium (K) is more metallic than Germanium (Ge)

While Lead (Pb) lies to left of Sb in the adjacent column and is also lies below Sb. Hence Pb is more metallic than Sb

7 0
3 years ago
Molecules can be dissolved? Why?
elixir [45]

Answer:

Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules. This break up is caused by coming into contact with the solvent. In the case of salt water, the water molecules break off salt molecules from the larger crystal lattice.

Explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • The expression CaCO3 → CaO + CO2 is an example of a
    7·2 answers
  • A mixture of CO (g) and excess O2(g) is placed in a 1.0 L reaction vessel at 100.0C and a total pressure of 1.50 atm. The CO is
    5·1 answer
  • Temperature is the______
    11·2 answers
  • Suppose a small amount of a solid is added to water and, after a short time, all the solid has dissolved. Which of the following
    14·2 answers
  • You are using a beaker to measure volume. the beakers graduation begin at 20ml and in indicate every 10ml up to 80 ml. the botto
    9·1 answer
  • Which of these is an element?
    8·2 answers
  • Which best describes an element ?​
    7·2 answers
  • Identify find a functional groups as indicated
    5·1 answer
  • Which of these are ways in which a seed might be dispersed? Check all that apply. organisms clouds wind water rocks
    7·2 answers
  • MASTERING CONCEPTS<br> 31. List three examples of substances. Explain why each<br> is a substance.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!