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
Genrish500 [490]
2 years ago
9

What floats on top of molten magma under the earth’s surface?.

Chemistry
1 answer:
elena-s [515]2 years ago
5 0

Explanation:

Earthquakes. are caused by the earth's crust, more specifically, tectonic plates that float on top of molten magma. These plates bump into each other. it's the answer Earthquakes.

You might be interested in
Metaloids definition
Black_prince [1.1K]

Answer:an element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.

Explanation:

5 0
3 years ago
Read 2 more answers
A coin floats on the top of a glass of water. Explain why the coin is able to float on top of the water in this glass.
Goshia [24]

Answer:

The surface tension of the water

Explanation:

The surface of the water curves down twords the edge of the coin.

4 0
3 years ago
Read 2 more answers
The volume of CO2 at 99.3 kPa was measured at 455 cm3. What will the volume be if the pressure is adjusted to 202.6 kPa?
Marizza181 [45]

Answer:

<h3>The answer is 223.0 cm³</h3>

Explanation:

To find the volume when the pressure is at 202.6 kPa we use Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final volume

V_2 =  \frac{P_1V_1}{P_2}  \\

From the question

P1 = 99.3 kPa = 99300 Pa

V1 = 455 cm³

P2 = 202.6 kPa = 202600

So we have

V_2 =  \frac{99300 \times 455}{202600}  =   \frac{45181500}{202600}  \\  = 223.008390...

We have the final answer as

<h3>223.0 cm³</h3>

Hope this helps you

6 0
4 years ago
A sulfuric acid solution containing 571.6 g of H2SO4 per liter of solution has a density of 1.329 g/cm3. Calculate (a) the mass
IgorLugansk [536]

Answer:

a) 43%

b) 0.122

c) 7.70 molal

d) 5.83 M

Explanation:

Step 1: Data given

Mass of H2SO4 = 571.6 grams

Density of H2SO4 = 1.329 g/cm³ this means 1.329 grams per 1 mL or 1329 grams per 1L

<em>a) Calculate mass percentage</em>

Mass % = (571.6 grams / 1329 grams)* 100% = <u>43%</u>

<em>b) Calculate mole fraction</em>

Number of moles H2SO4 = Mass H2SO4 / Molar mass H2SO4

Moles H2SO4 = 571.6 grams / 98.08 g/mol

Moles H2SO4 = 5.83 moles

Moles H2O = (1329 -571.6)/18.02 = 42.03 moles

Total moles = 5.83 + 42.03 = 47.86 moles

Mole fraction H2SO4 = Moles of solute (H2SO4)/ Total moles

Mole fraction H2SO4 = 5.83 moles / 47.86 moles

Mol fraction h2SO4 = <u>0.122</u>

<em>c) Calculate the molality</em>

Mass of solvent = 1329 grams - 571.6 grams = 757.4 grams = 0.7574 kg

Molality of H2SO4 = number of moles H2SO4 / mass of solvent

Molality H2SO4 = 5.83 moles / 0.7574 kg

Molality H2SO4 = <u>7.70 molal</u>

<em>d) Calculate Molarity </em>

Molarity H2SO4 = Number of moles H2SO4 / volume

Molarity H2SO4 = 5.83 moles / 1L = <u>5.83 M</u>

6 0
3 years ago
A fossilized leaf contains 24% of its normal amount of carbon 14. how old is the fossil (to the nearest year)? use 5600 years as
sergij07 [2.7K]
The Half life is the time taken for a radioisotope or a radioactive substance to decay by half its original amount. The half life of carbon 14 is 5600 years. 
Original mass is 100%
Remaining amount is 24% 
Therefore; 0.24 = 1 × (1/2)^n
                     n = log 0.24/log 0.5
                        = 2.06
therefore, the age of the fossil is 5600×2.06
 = 11529.8 
 ≈ 11529 years

7 0
4 years ago
Other questions:
  • The molecular weight of ethanol (CHgCHzOH) is 46 and its density is 0.789 g/cm3. A. \A4rat is the molarity of ethanol in beer th
    12·1 answer
  • The picture above shows the water cycle. In the water cycle, water travels from the land to the sky and back again. Water leaves
    13·1 answer
  • Suppose you have an Internet friend who study chemistry just like you are your friend claims the change from liquid water to wat
    7·1 answer
  • What is an orbital??​
    10·1 answer
  • Water (H2O) is composed if the same elements as carbon monoxide (CO). How do their properties compare?
    11·2 answers
  • The gas in the piston is being heated, and the piston has moved upward. The observation will be summarized in a row of the incom
    7·1 answer
  • A student conducts an experiment to see how music affects plant growth. The student obtains four identical plants. Each one is p
    10·1 answer
  • Which term describes a chemical equation in which all highly soluble compounds are written as dissociated ions
    10·1 answer
  • When is the best time to clean glassware during the lab session?
    8·1 answer
  • Carlos is making phosphorus trichloride using the equation below.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!