Ask question

Ask question

All categories

Alenkasestr [34]

3 years ago

7

Water in the atmosphere is a gas. When the air cools, water may condense into clouds. Then it may become a liquid or a solid and

fall back to the surface of the Earth.
Water that falls from clouds is called
A.
precipitation.
B.
evaporation.
C.
groundwater.
D.
the water cycle.

1 answer:

Maksim231197 [3]3 years ago

4 0

Answer:

A precipitation is answer

You might be interested in

What is the density of a cube of water measuring 2cmX4cmX1cm, with a mass of<br> 8g?

Vinil7 [7]

The actual formula for volume for a cube is the length multiplied by the width and then multiplied by the height. Since all three measurements are the same, the formula results in the measurement of one side cubed. For the example, 5^3 is 125 cm^3. Multiply the volume by the known density, which is the mass per volume.

7 0

3 years ago

50 extra if correct !!

leva [86]

Answer:

A.

Explanation:

the gradual movement of the continents across the earth's surface through geological time.

7 0

3 years ago

What is the half-life of an isotope that decays to 12.5% of its original activity in 19.8 hours?

katen-ka-za [31]

$x= x_{0} e^{kt} ,where~ x ~is~ the ~ |amount\ of \material\ at\ any~~time~t
$
$and~ x_{0} ~the~original~amount.$
$when~x= \frac{12.5}{100} x_{0} }= \frac{125}{1000} x_{0}$
$\frac{x}{ x_{0} } = \frac{125}{1000}= \frac{1}{8}$
$when t=19.8 hrs,
x= x_{0} e^{19.8 k}, 
 \frac{x}{ x_{0} } = e^{19.8 k}, 
 \frac{1}{8} = e^{19.8k} ,
ln \frac{1}{8} =19.8 k,
$
$ln1-ln8=19.8k,
0-ln 2^{3} =19.8 k,
-3 ln2=19.8k
k= \frac{-3 ln2}{19.8} = \frac{- ln 2}{6.6}$ $x= x_{0} e^{ \frac{-ln2}{6.6}t } ,
 \frac{x}{ x_{0} } = e^{ \frac{- ln 2}{6.6}t } 
$ $\frac{1}{2} = e^{ \frac{- ln2}{6.6}t } = \frac{1}{ e^{ \frac{ln 2}{6.6} t} } ,
2= e^{ \frac{ln2}{6.6}t } ,
ln2=ln e^{ \frac{ln 2}{6.6}t } = \frac{ln 2}{6.6} t~ln e= \frac{ln2}{6.6} t,$

8 0

4 years ago

PLEASE HELP ASAP Do NOT give me a random gibberish answer or else I might report you!!

Veronika [31]

Answer:

Physical Changes:

Let's say during your camping trip you stepped on a twig. This would be a physical change.

Let's also say that while there, you accidentally stepped on a flower, causing it to fall off of it's stem. This would also be a physical change.

Chemical Changes:

Let's say you start a fire using wood that you got from this rainforest. Since the act of burning something is a chemical change, this would apply.

Let's also say you forget a banana peel there. After a while, it would start to rot. And since rotting is a chemical change, this would apply as well.

Explanation:

Hope this helps!

8 0

3 years ago

Consider the equation for the formation of water. 2h2 o2 right arrow. 2h2o what is the theoretical yield of h2o if 130 g of h2o

Montano1993 [528]

The theoretical yield is the reaction yield that measures the product of the reaction from the conversion of the limiting reagent. The theoretical yield is 160 gm.

<h3>What is mass?</h3>

Mass or the theoretical yield is the result of the multiplication of mole and the molar mass of the compound.

The reaction between hydrogen and oxygen is shown as,

$\rm 2H_{2} + O_{2} \rightarrow 2H_{2}O$

Moles of water is calculated as:

$\begin{aligned}\rm moles &= \rm \dfrac{mass}{molar\; mass}\\\\&= \dfrac{18}{2}\\\\&= 9\;\rm moles\end{aligned}$

The theoretical yield of water is calculated as:

$\begin{aligned}\rm \text{weight of water} &= \rm moles \times molar \; mass\\\\&= 9 \times 18\\\\&= 162 \;\rm gm\end{aligned}$

Therefore, option D. 160 gm is the theoretical yield of water.

Learn more about theoretical yield here:

brainly.com/question/918691

5 0

2 years ago