All categories

1 year ago

A major problem caused by humans is the contamination and depletion of _____ resources. A. solar B. water C. wind

Chemistry

2 answers:

nadezda [96]1 year ago

6 0

Answer: B. Water

Explanation:

Solar, water and wind are the renewable resources. They are abundantly available in nature and are replenishable. Due to human intervention the most affected resource is water. As water is required for various activities by human society. With the use in large scale such a resource is also contaminated by humans due to sewage discharge in water bodies, industrial discharge, disposal of wastes and even the cremation of humans a ritual practice is performed in water bodies. This will likely to deplete the available freshwater for future.

3241004551 [841]1 year ago

4 0

Water is the only one of these that would work by process of elimination.

You might be interested in

3. Which of these statements is an accurate description of the ionization energies of elements in the periodic table?

dalvyx [7]

Answer:

option A is correct

Explanation:

7 0

1 year ago

A teacher wants to figure out The amount of a solution that is needed for a titration experiment in a class lab! the class has 1

AnnZ [28]

The teacher needs 1500 mL for the whole class.

5 0

1 year ago

Read 2 more answers

What is the concentration of Iodine I2 molecules in a solution containing 2.54 g of iodine 250 cm3 of solution? A 0.01mol/dm3 B

gulaghasi [49]

Answer:

C. 0.04 moles per cubic decimeter.

Explanation:

The molar mass of the Iodine is 253.809 grams per mole and a cubic decimeter equals 1000 cubic centimeters. The concentration of Iodine ( $c$ ), measured in moles per cubic decimeter, can be determined by the following formula:

$c = \frac{m}{M\cdot V}$ (1)

Where:

$m$ - Mass of iodine, measured in grams.

$M$ - Molar mass of iodine, measured in grams per mol.

$V$ - Volume of solution, measured in cubic decimeters.

If we know that $m = 2.54\,g$ , $M = 253.809\,\frac{g}{mol}$ and $V = 0.25\,dm^{3}$ , then the concentration of iodine in a solution is:

$c = \frac{2.54\,g}{\left(253.809\,\frac{g}{mol} \right)\cdot (0.25\,dm^{3})}$

$c = 0.04\,\frac{mol}{dm^{3}}$

Hence, the correct answer is C.

3 0

1 year ago

El cuerpo humano tiene unos 6 billones de células (6,0x1012) y la población de la Tierra es de unos 8 000 millones de personas.

zloy xaker [14]

Answer:

En toda la población del mundo hay <u>0.0797 moles de células</u>

Explanation:

1.0 mol of cells = 6.022 * 10∧23 cells

X mol of cells = 6.0 * 10∧12 cells

- X is cleared to find out how many moles of cells are in a human body:

X = 6.0 * 10∧12 cells / 6.022 * 10∧23 cells

X = 9,963 * 10∧-12 moles of cells per person

In the world there are 8 * 10∧9 people, how many moles in total will there be?

8 * 10∧9 people * 9,963 * 10∧-12 moles of cells per person =

<u>0.0797 moles of molecules in the entire population of the earth.</u>

4 0

1 year ago

In some chemical reactions, electrons are transferred from one substance to another, but there is no net gain or loss of electro

Natali [406]

Answer and Explanation:

The equation that depicts oxidation of neutral atom A is shown below:

$\rightarrow A^+ + e^-$

This is because one species is losing electrons due to oxidation. The species possesses positively charged after losing electrons, the magnitude of which is proportional to the number of electrons lost.

The net charge will be equivalent on both sides of the equation, too.

Therefore all other options are not correct

The equation that depicts the decline of neutral atom X is

$X + e^- \rightarrow X^-$

It is how a cell gains electrons by reduction. The species obtains a negative charge upon possessing electrons, whose magnitude is equivalent to the amount of electrons gained.

The net charge will be equivalent on both sides of the equation, too.

Therefore all other options are not correct

4 0

1 year ago