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pickupchik [31]
3 years ago
7

What are two benefits of scientists using a diagram to model the water cycle?

Chemistry
1 answer:
tatiyna3 years ago
5 0
I believe that the answer is A i could be wrong though.
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If you can solve both<br> Will mark brainly<br> ASAP
MrRa [10]

Answer:

The main function sis the 2nd one and the substance provides the first 1.

Explanation:

Hope you finish the rest on your own, have fun!

7 0
3 years ago
When HCl is added to water, the [H3O+] = 0.6 M. What is the [OH-]?
makkiz [27]

Answer:

The answer is

<h2>[OH-] = 1.66 × 10^-14 M</h2>

Explanation:

To find the [OH-] we must first find the pH and the pOH of the solution

That's

pH + pOH = 14

pOH = 14 - pH

To find the pH we use the formula

pH = -log [H3O+]

From the question

[H3O+] = 0.6 M

pH = - log 0.6

pH = 0.22

pOH = 14 - 0.22

pOH = 13.78

We can now find the [OH -] in the solution using the formula

pOH = - log [OH-]

13.78 = - log [OH-]

Find the antilog of both sides

We have the final answer as

<h3>[OH-] = 1.66 × 10^-14 M</h3>

Hope this helps you

3 0
4 years ago
What happens when sodium reacts with fluorine to produce sodium fluoride???
zalisa [80]

Balanced chemical reaction: 2Na(s) + F₂(g) → 2NaF(s) + energy.

This is exothermic reaction (energy or heat is released), because reactants have higher energy than products of reaction.

In ionic salt sodium fluoride (NaF), fluorine has electronegativity approximately χ = 4 and sodium χ = 1 (Δχ = 4 - 1; Δχ = 3), fluorine attracts electron and it has negative charge and sodium has positive charge.


3 0
3 years ago
156 g sample of steel has a volume of 20.0 mL. what is the density of the steel sample
sammy [17]
Hey there! :

Mass = 156 g

Volume = 20.0 mL

Therefore:

Density  = mass / volume

Density = 156 / 20.0

Density = 7.8 g/mL


5 0
4 years ago
Read 2 more answers
State each of the following statement true or false? A. A carbon atom can form up to four covalent bonds. B. A carbon atom has s
VLD [36.1K]

Answer:

The answer to your question is below

Explanation:

A. A carbon atom can form up to four covalent bonds. True

B. A carbon atom has six electrons in its outermost shell. False, a  carbon atom only has 4 electrons in its outermost shell.

C. The bond between a carbon and hydrogen atom is a polar bond. True

D. Oxygen and nitrogen have a stronger electronegativity than carbon (e.g., a strong pull on a shared electron). True, carbon electronagativity is 2.55, while oxygen and nitrogen electronegativities are 3.44 and 3.04.

E. Bonds between carbon and other atoms are relatively unstable and readily dissociate, resulting in the formation of new molecules. False, carbon bonds are very stable.

F. The carbon backbone of a molecule is made up of a string of carbon atoms held together with either single or double bonds. True, carbon can form strings with single, double or triple bonds.

G. The carbon backbone of a molecule comes in a variety of shapes: linear, ring-like, or highly branched. True, carbon molecules can form a great variety of shapes.

H. Carbon is a relatively large atom allowing it to bind to more atoms than smaller atoms would, thereby making it more versatile. False, carbon atom is a small molecule.

7 0
4 years ago
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