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
Delvig [45]
3 years ago
14

About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much fresh

water unavailable for human use? A) It is frozen. B) It is polluted. C) It is salt water. D) It is in aquifers. 2) The deepest place in the seafloor is called the A) abyssal plain. B) Marianas Trench. C) Aleutian Trench. D) hydrothermal vent. 3) Tides are caused by A) gravity. B) heat. C) waves. D) winds.
Chemistry
2 answers:
Ilya [14]3 years ago
3 0
I believe the answer you're looking for is B. It's Polluted. I hope this helps.
devlian [24]3 years ago
3 0

<u>These are the correct answers you guys can definitely trust me on:</u>

<u>#1. It is frozen, when we need it, people with cut it out</u>

<u>#2. The deepest part of the ocean in the Mariana's Trench</u>

<u>#3. Gravity: Tides are caused by the gravitational interaction between the Earth and the Moon. The gravitational attraction of the moon causes the oceans to bulge out in the direction of the moon. </u>

You might be interested in
What is force and motion
Elza [17]
Force is a strength or energy as an attribute or physical action or movement, motion is the action or process of moving or being moved
5 0
3 years ago
Read 2 more answers
If you burn 29.4 g of hydrogen and produce 263 g of water, how much oxygen reacted?
vovikov84 [41]

The reaction between hydrogen and oxygen to form water is given as:

H_2 + O_2 \rightarrow H_2O

The balanced reaction is:

2H_2 + O_2 \rightarrow 2H_2O

According to the balanced reaction,

4 g of hydrogen (4\times 1) reacts with 32 g of oxygen (2\times 16).

So, oxygen reacted with 29.4 g of hydrogen is:

\frac{29.4\times 32}{4} = 235.2 g

Hence, the mass of oxygen that is reacted with 29.4 g of hydrogen is 235.2 g.

7 0
3 years ago
A mixture of helium, nitrogen, and oxygen has a total pressure of 752 mm Hg. The
NISA [10]

Answer: The partial pressure of oxygen in the mixture is 321 mm Hg

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

p_{total}=p_{He}+p_{N_2}+p_{O_2}

Given : p_{total} = total pressure of gases = 752 mm Hg

p_{He} = partial pressure of Helium = 234 mm Hg

p_{N_2} = partial pressure of nitrogen = 197 mm Hg

p_{O_2} = partial pressure of oxygen = ?

Putting in the values we get:

752mmHg=234mmHg+197mmHg+p_{O_2}

p_{O_2}=321mmHg

The partial pressure of oxygen in the mixture is 321 mm Hg

5 0
3 years ago
which occupies a larger volume, 600 g of water (with a density of 0.995 g/cm3 ) or 600 g of lead (with a density of 11.35 g/cm3
Montano1993 [528]
Water will occupy larger volume
5 0
3 years ago
Suppose you are presented with a clear solution of sodium thiosulfate, Na2S2O3 . How could you determine whether the solution is
navik [9.2K]

Explanation:

A solution is said to saturated when it cannot dissolve any extra solute in it. The extra solute put remains undissolved.

A solution is said to unsaturated, when the concentration of solute is less as compared to solubility of the solution it is said to be unsaturated.

A solution is said to be super saturated when it contains more of the solute than the solvent  can dissolve under normal conditions is called super saturated.

5 0
3 years ago
Other questions:
  • Asuming all orbitals are in the same energy level which type of orbital has the lowest energy?
    13·1 answer
  • Why is it important for the pH of blood to remain constant
    8·1 answer
  • Which missing item would complete this alpha decay reaction?<br><br> 257/100 Fm= ________+4/2He
    8·2 answers
  • What is the similarities of freezing of water and electrolysis of water​
    10·1 answer
  • When the water in the ocean goes back into the sky what is it called?
    13·2 answers
  • Archer is a soil scientist and needs to examine a bacteria sample. He wants to be able to change his magnification with differen
    5·1 answer
  • Define the following:
    9·1 answer
  • What is two masses exerting a force on each other an example of?
    14·1 answer
  • Discussion the sn1 and sn2 substitution reactions. Haloalkanese
    15·1 answer
  • What volume of water vapor would be produced from the combustion of 815.74 grams of propane (C3H8) with 1,006.29 grams of oxygen
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!