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
White raven [17]
3 years ago
5

HELP WITH SCIENCE!! 7TH GRADE! DUE TODAY!

Chemistry
1 answer:
ehidna [41]3 years ago
3 0

I am not positive this is what you want but here lol:

The Earth's surface is about 71 percent water spreading over many oceans, rivers, and lakes. This also includes the droplets of water on the morning grass, the undrained water from the rain, puddles that never evaporated, etc. As this water is heated up by the Sun, its' molecules start to move faster as it turns into gas and evaporates. As it evaporates it rises, however, the cooler temperatures in the high altitude of Earth's atmosphere make it condense into large clouds. When so much water has evaporated and the cloud very dense, gravity brings down the water from the clouds onto the ground in the form of rain. This completes the water cycle as the water will either turn into runoff, stay on the surface of the Earth, or seep into the ground. Then the water evaporates again, and the whole process starts over.

*Hope this helped!! Have a good night/ day wherever you are! : )*

You might be interested in
Which of the following types of electromagnetic waves generally has the least energy
sertanlavr [38]

Radio waves have the lowest energy, but the longest wavelength. So radio waves is the answer. Good luck on the rest and message me for more help.

7 0
3 years ago
Read 2 more answers
List the two main kinds of changes that you can observe when chemical reactions occur.
melisa1 [442]
Changes in energy and formation of new substances.
5 0
3 years ago
37.2 liters of a gas has a pressure of 362.43 kPa at 46.5 °C. If the pressure increases to
Nataliya [291]

Answer:

Option A. 25.7 L.

Explanation:

Step 1:

Data obtained from the question. This include the following:

Initial volume (V1) = 37.2 L

Initial pressure (P1) = 362.43 kPa

Initial temperature (T1) = 46.5 °C

Final pressure (P2) = 693.9 kPa

Final temperature (T2) = 149.2 °C

Final volume (V2) =.?

Step 2:

Conversion of celsius temperature to Kelvin temperature.

This can be achieved as shown below:

Temperature (K) = Temperature (°C) + 273

T (K) = T (°C) + 273

Initial temperature (T1) = 46.5 °C

Initial temperature (T1) = 46.5 °C + 273 = 319.5 K.

Final temperature (T2) = 149.2 °C

Final temperature (T2) = 149.2 °C + 273 = 422.2 K.

Step 3:

Determination of the new volume.

This can be obtained by using the general gas equation as shown below:

Initial volume (V1) = 37.2 L

Initial pressure (P1) = 362.43 kPa

Initial temperature (T1) = 319.5 K

Final pressure (P2) = 693.9 kPa

Final temperature (T2) = 422.2 K

Final volume (V2) =.?

P1V1/T1 = P2V2/T2

362.43×37.2/319.5 = 693.9 × V2/422.2

Cross multiply

319.5×693.9×V2 = 362.43×37.2×422.2

Divide both side by 319.5 × 693.9

V2 = (362.43×37.2×422.2)/(319.5×693.9)

V2 = 25.7 L

Therefore, the new volume is 25.7 L.

8 0
4 years ago
Select the reasons why organisms are classified. Check all that apply.
natali 33 [55]

Answer:

ACDE

Explanation:

just answered this question on edg

7 0
3 years ago
Read 2 more answers
Calculate the concentration expressed in percent, if 10 g of NaOH is diluted to 500 ml with water.
Zepler [3.9K]

If 10 g of NaOH is diluted to 500 ml with water then  the concentration expressed in percent is 0.5 mol/L .

Calculation ,

Given mass in gram = 10 g

Number of moles = given mass /molar mass = 10 g / 40 g/mol = 0.25mole

Given volume in ml = 500 ml

Given volume in liter  = 0.5 L

Putting the value of mass and volume in equation i we get concentration expressed in percent .

C = number of moles ×100/ volume in liter = 0.25mole ×100/ 0.5 L

C  =  0.5 mol/L

Concentration of solution in terms of percentage can be expressed in two ways

1) percentage by mass

2) percentage by volume

Hence, for liquid solutions, concentration is expressed in terms of percentage by volume.  

To learn more about concentration please click here ,

brainly.com/question/10380236

#SPJ4

5 0
1 year ago
Other questions:
  • Which states of matter appear in the water cycle
    15·2 answers
  • The wavelength of light from an electronic billboard is 4.89
    5·1 answer
  • What is the pH of 0.550 M H2 SO4
    9·1 answer
  • Substances that react with metals to produce hydrogen gas are called
    8·1 answer
  • How many moles of NaOH are present in 25.0 mL of a 0.1000 M NaOH solution?
    6·2 answers
  • 2co3+(aq)+2cl−(aq)→2co2+(aq)+cl2(g). e∘=0.483 v what is the cell potential at 25 ∘c if the concentrations are [co3+]= 0.717 m ,
    13·1 answer
  • A solution is prepared using 0.125 glucose C6H12O6 is enough water to make 250 g of total solution the concentration of the solu
    7·2 answers
  • What is the octet rule and how is it used in covalent bonding?
    9·1 answer
  • Ocean currents - Surface ocean currents can occur on local and global scales and are typically wind-driven, resulting in both ho
    8·1 answer
  • Describing chemical reactions that occur in the kitchen.(6 reaction at least )
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!