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
s2008m [1.1K]
3 years ago
11

What is the mass of 0.78 mol Mg(NO3),? Make sure to round to the correct number of sig figs and to include the unit in your fina

l answer
Chemistry
1 answer:
Oxana [17]3 years ago
7 0

Answer:

67.08 g

Explanation:

you firts write what u know

then u calculate the molar mass of the salt

then according to the formula mass= number of mols × molar mass you find the mass

m= mass

n= number of mol

M= molar mass i hope this helps

You might be interested in
Why would you not expect to find fossils in metamorphic and igneous rocks?
Marina CMI [18]

Answer:

igneous rocks are made from molten,and therefore rarely have fossils in them.Metamorphic rocks are squished,put under pressure,and get heated to the extreme,so it's very rare for fossils to survive in these conditions.

8 0
3 years ago
Is the ability to do work and allows living things to perform all the functions necessary to live.
velikii [3]

I guess you are asking what world should go at the beginning of the sentence. If I am right, it is energy.

5 0
3 years ago
Read 2 more answers
Argon, which comprises almost 1% of the atmosphere, is approximately 27 times more abundant than CO 2, but does not contribute t
kotegsom [21]

Answer:

The gas argon does not reach a state of vibrational excitation when infrared radiation strikes this gas.

Explanation:

The dry atmosphere is composed almost entirely of nitrogen (in a volumetric mixing ratio of 78.1%) and oxygen (20.9%), plus a series of oligogases such as argon (0.93%), helium and gases of greenhouse effect such as carbon dioxide (0.035%) and ozone. In addition, the atmosphere contains water vapor in very variable amounts (about 1%) and aerosols.

Greenhouse gases or greenhouse gases are the gaseous components of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at certain wavelengths of the infrared radiation spectrum emitted by the Earth's surface, the atmosphere and clouds . In the Earth's atmosphere, the main greenhouse gases (GHG) are water vapor (H2O), carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4) and ozone (O3 ). There is also in the atmosphere a series of greenhouse gases (GHG) created entirely by humans, such as halocarbons (compounds containing chlorine, bromine or fluorine and carbon, these compounds can act as potent greenhouse gases in the atmosphere and they are also one of the causes of the depletion of the ozone layer in the atmosphere) regulated by the Montreal Protocol. In addition to CO2, N2O and CH4, the Kyoto Protocol sets standards regarding sulfur hexafluoride (SF6), hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs).

The difference between argon and greenhouse gases such as CO2 is that the individual atoms in the argon do not have free bonds and therefore do not vibrate. As a consequence, it does not reach a state of vibrational excitation when infrared radiation strikes this gas.

6 0
3 years ago
9.86 x 10²⁸ O-atoms require what volume (L) N₂O₂ at STP?
jolli1 [7]
First, we use avogadro's number to convert atoms into moles. Then, relate the number of moles from elemental to the compound. Lastly, we use conditions at STP to calculate the volume. We do as follows:

<span>9.86 x 10²⁸ O-atoms ( 1 mol / 6.022x10^23 atoms O) ( 1 mol N2O2 / 2 mol O ) ( 22.4 L / 1 mol ) = 1833809.37 L needed</span>
8 0
3 years ago
NaOH is typically standardized using potassium hydrogen phthalate (KHP).
DaniilM [7]

Answer:

Na(OH)²

Explanation:

We look for the charges in the periodic table

6 0
3 years ago
Other questions:
  • Why is a solution not a pure substance?
    9·1 answer
  • Explain how an owl captures energy from the sun when it eats a mouse​
    10·1 answer
  • In what circumstances do scientists use observational research and opinion based research?
    10·1 answer
  • 8.1 moles of HCl is put into a beaker with enough water to make a total of 189.98 milliliters of
    11·1 answer
  • Is the following set of quantum numbers a valid set?<br><br> [3, 2, 2, 1/2]
    9·1 answer
  • How many grams in 120 moles of iron (Fe)?
    15·1 answer
  • 1. If the frequency of a wave increases from 2 Hz to 4 Hz without the wavelength changing, how will the wave speed change? PLS H
    12·1 answer
  • Which description best characterizes the motion of particles in a solid?
    14·1 answer
  • The graph shows a relationship between volume and temperature. Which of the following statements is true?
    14·1 answer
  • 3. A grassy area had populations of rabbits, grass, and hawks. Rabbits eat grass, and
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!