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2 years ago

Explain why the available amount of water per person differs between countries

Chemistry

2 answers:

Alex17521 [72]2 years ago

8 0

There is poverty in many countries. The manufacturing of safe to drink water or the shipping of it may be difficult.

Fudgin [204]2 years ago

4 0

Answer:

because in the different countries it is distributed unevenly.

Explanation:

hope this helps

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Which statement about gases is true?

Marat540 [252]

Answer:

B) They are made up of particles that travel in a curved path when in motion.

Explanation:

We know that gas, being a state of matter, is made up of particles. John Dalton's solid-sphere model was proven to be incorrect by Ernest Rutherford's gold foil experiment.

These particles do NOT always move very slowly. There are multiple different factors that affect the speed of the particles such as temperature or concentration.

6 0

2 years ago

Does anybody know the answer to these two questions ?

Serga [27]

The first on is a and the second c I belive

6 0

3 years ago

A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solutio

brilliants [131]

Explanation:

The given data is as follows.

Concentration of standard NaOH solution = 0.1922 M

Let the original acid solution concentration be x.

$M_{1}V_{1} = M_{2}V_{2}$

$x \times 25 = 250 \times M_{2}$

$M_{2} = \frac{x \times 25}{250}$

= 0.1 x M

$V_{2}$ = 10.00 mL (given)

The reaction equation is as follows.

$2NaOH + H_{2}SO_{4} \rightarrow Na_{2}SO_{4} + 2H_{2}O$

Concentration × Volume of $H_{2}SO_{4}$ = Concentration × Volume of NaOH

$\frac{M_{2}V_{2}}{n_{2}} = \frac{M_{3}V_{3}}{n_{3}}$

$\frac{0.1 x \times 10 ml}{1} = \frac{0.1922 M \times 13.68 ml}{2}$

x = 1.314 M

Therefore, we can conclude that the concentration of the original sulfuric acid solution is 1.314 M.

7 0

3 years ago

Select all that apply.

inysia [295]

Answer: has zero mass

is an electron

has a -1 charge

is electromagnetic energy

Explanation:

A beta-particle is an electron emitted from the nucleus of an atom following the decay of a neutron into a proton. Beta rays are deflected by a magnetic field in a direction that indicates a negative charge, thus they are electromagnetic in nature.

The beta particle released is basically a electron with -1 charge and no mass.

General representation of beta particle in the form of $_Z^A\textrm {X}$ given as $_{-1}^0e$