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
Murrr4er [49]
3 years ago
7

Which statement holds true when the molar mass of hydrogen is 2.0 grams and that of helium is 4.0 grams?

Chemistry
1 answer:
ehidna [41]3 years ago
7 0
I think you forgot to give the choices along with your question. I am answering the question based on my research and knowledge. "Helium effuses 0.71 times faster than hydrogen" is the statement that <span>holds true when the molar mass of hydrogen is 2.0 grams and that of helium is 4.0 grams. I hope the answer has helped you.</span>
You might be interested in
How reactive is an atom of Sodium(Na) and why?
s344n2d4d5 [400]
3rd one:
it is very reactive because it does not have a full Valence shell.

this is because it's in group 1 so it has one electron in its outer shell, and it wants to have a full outer shell ( which it can gain by losing the electron in a reaction).

Hope this helps :)
5 0
2 years ago
Koii zinda he kya -_+<br><br>what is ions??? ​
satela [25.4K]

Answer:

An ion is defined as an atom or molecule that has gained or lost one or more of its valence electrons, giving it a net positive or negative electrical charge.

Explanation:

I am here zinda -_+...

3 0
2 years ago
1. How is the modern periodic table organized?
Dimas [21]

1. How is the modern periodic table organized?  Increasing atomic number

2. What information about an atom's properties can you read from the periodic table?       Metal or not metal. Does it want to gain or lose electrons

3. How are the relationships of elements in a group different from the relationships of elements in a period?  a group will have similar properties A period will have different properties

4. Would you expect Strontium (Sr) to be more like potassium (K) or bromine (Br)?  

potassium

5. Barium (Ba) is in Group 2. Recall that atoms in Group 1 lose one electron to form ions with a 1+ charge. What type of ion does barium form?  Ba+2


3 0
3 years ago
5. What type of clouds can be found in the mesosphere?
Masja [62]

Some material from meteors lingers in the mesosphere, causing this layer to have a relatively high concentration of iron and other metal atoms. Very strange, high altitude clouds called "noctilucent clouds" or "polar mesospheric clouds" sometime form in the mesosphere near the poles.

I really hope this helps! I wish you the best of luck!

8 0
3 years ago
A chemist has 2. 0 mol of methanol (CH3OH). The molar mass of methanol is 32. 0 g/mol. What is the mass, in grams, of the sample
natima [27]

The mass, in grams, of the sample of methanol (CH₃OH) is 64 grams.

<h3>How we calculate mass from moles?</h3>

Mass of any substance can be calculated by using moles as:

n = W/M, where

W = required mass

M = molar mass

In the question that:

Moles of methanol = 2mole

Molar mass of methanol = 32g/mole

On putting these values in the above equation, we get

W = n × M

W = 2mole × 32g/mole = 64g

Hence, 64 grams is the mass of the sample.

To know more about moles, visit the below link:

brainly.com/question/15374113

6 0
2 years ago
Other questions:
  • Which generalized equation represents a single displacement reaction?
    5·1 answer
  • Earth has one moon and mars has two moons. how many more moons are found around the outer planets than the inner planets?
    12·2 answers
  • How many magnesium atoms are contained in 3.75 moles of magnesium?
    11·1 answer
  • What type of chemical reaction is given by the following balanced equation: 2C8H18 + 25O2 → 16CO2 + 18H2O
    6·1 answer
  • A student has an unknown sample. How can spectroscopy be used to identify the sample?
    8·2 answers
  • Which action best demonstrates the transformation of mechanical energy to heat energy?
    6·2 answers
  • Andrew gathered several different species of seed plants. Which three characteristics do all the plants most likely
    8·2 answers
  • What is a gas’s temperature in Celsius when it has a volume of 25 L, 203 mol, 143.5 atm?
    15·1 answer
  • How many sigfigs does 50 have?<br> pls explain why
    6·1 answer
  • Substances that dissolve in water nd give up OH-ions are considered what
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!