Ask question

Ask question

All categories

1 year ago

9

Many people in the world don't have access to clean drinking water. What may be the cause of this?

2 answers:

Furkat [3]1 year ago

8 0

Answer:

Climate change and an increase in unpredictable and extreme weather is a growing challenge. Long periods of drought affect clean water supplies while flooding can pollute clean water sources and cause outbreaks of disease.

qaws [65]1 year ago

8 0

Answer:

could be areas they live in

You might be interested in

How can you minimize a collision summary

ElenaW [278]

One of the ways to minimize a collision is to slow down: When you can't find an escape and you're definitely going to collide with something, you should slow your vehicle down as much as possible.

Hope this helps ^^

4 0

2 years ago

Write the expression for the equilibrium constant for the reaction represented by the equation CaCO3(s)⇌Ca2+(aq)+CO32−(aq). Is K

Alexeev081 [22]

<u>Answer:</u> For the given reaction, the value of $K_c$ is greater than 1

<u>Explanation:</u>

For the given chemical equation:

$CaCO3(s)\rightleftharpoons Ca^{2+}(aq.)+CO_3^{2-}(aq.)$

The expression of $K_c$ for above equation follows:

$K_c=\frac{[Ca^{2+}]\times [CO_3^{2-}]}{[CaCO_3}]\\\\K_c=[Ca^{2+}]\times [CO_3^{2-}]$

The concentration of pure solids and pure liquids are taken as 1 in equilibrium constant expression

As, the denominator is missing and the numerator is the only part left in the expression. So, the value of $K_c$ will be greater than 1.

Hence, for the given reaction, the value of $K_c$ is greater than 1

5 0

3 years ago

How much energy is required to heat 250 grams of water from 20.0°C to 80.0°C? The heat capacity of water is 4.186 J/g°C

tatyana61 [14]

Answer:

62,790J

Explanation:

Q=mcT

= 250g*4.186J/gc*80-20

=250*4.186*60=62,790J

7 0

3 years ago

A rigid cylinder with a movable piston contains a sample of hydrogen gas.

Anettt [7]

Answer:

jhoih hioih htg

Explanation:

pop in my head ahhhh hello went y

6 0

2 years ago

Wood has a density of 0.531 g/cm3. What is the volume of 44 grams of wood?

Sunny_sXe [5.5K]

Answer:

<h3>The answer is 82.86 cm³</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density} \\$

From the question

mass of wood = 44 g

density = 0.531 g/cm³

It's volume is

$volume = \frac{44}{0.531} \\ = 82.86252354...$

We have the final answer as

<h3>82.86 cm³</h3>

Hope this helps you

3 0

2 years ago