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
oksano4ka [1.4K]
2 years ago
6

Formula for the compound that contains Mg2+ and O2-

Chemistry
1 answer:
jeka942 years ago
7 0

Answer:

MgO.

Explanation:

charges of both satisfy one another (balanced) -- producing a compound MgO.

You might be interested in
PLEZ HELP QUICKLY!!!! ILL MARK BRAINLIEST
stellarik [79]
It is C.ti and o and you don’t have to make me brainlest
5 0
3 years ago
Read 2 more answers
Henok is observing the reaction rate of a chemical reaction. He then adds a catalyst to the reaction.
tia_tia [17]
A catalyst will ALWAYS increase the reaction rate so C
4 0
2 years ago
Which term describes this molecular shape?
ICE Princess25 [194]

Answer:

B.) Trigonal planar

Explanation:

This molecule has 3 bonds and no lone pairs. The angles are all 120° and the bonds are within the same plane. These molecules have the molecular shape of trigonal planar.

4 0
1 year ago
Assume that silver and gold form ideal, random mixtures. Calculate the mass of pure Ag needed to cause an entropy increase of 20
KengaRu [80]

Answer:

m_{Ag}=2,265.9g

Explanation:

Hello!

In this case, since the definition of entropy in a random mixture is:

\Delta S=-n_TR\Sigma[x_i*ln(x_i)]

For this silver-gold mixture we write:

\Delta S=-(n_{Au}+n_{Ag})R\Sigma[\frac{n_{Au}}{n_{Au}+n_{Ag}} *ln(\frac{n_{Au}}{n_{Au}+n_{Ag}} )+\frac{n_{Ag}}{n_{Au}+n_{Ag}} *ln(\frac{n_{Ag}}{n_{Au}+n_{Ag}} )]

By knowing the moles of gold:

n_{Au}=100g*\frac{1mol}{197g} =0.508mol

It is possible to write the aforementioned formula in terms of the variable x representing the moles of silver:

20\frac{J}{mol}=-(0.508+x)8.314\frac{J}{mol*K} \Sigma[\frac{0.508}{0.508+x} *ln(\frac{0.508}{0.508+x} )+\frac{x}{0.508+x} *ln(\frac{x}{0.508+x} )]

Which can be solved via Newton-Raphson or a solver software, in this case, I will provide you the answer:

x=n_{Ag}=21.0molAg

So the mass is:

m_{Ag}=21.0mol*\frac{107.9g}{1mol}\\ \\m_{Ag}=2,265.9g

Best regards!

3 0
2 years ago
Can Someone help me pls?
Ilia_Sergeevich [38]

Answer:

For H3O concentration you do 10^-pH so if pH is 5 then H3O+ is 10^-5= 1*10^-5 H3O+ ions

For OH is one extra step. First find H3o+ ions using equation above then you have to use that to divide 1*10^-14

So if pH is 5....the H3O+ is 1*10^-5 then OH- = (1*10^-14)/(1*10^-5) =  1*10^-9 OH ions

as far as acid/base pH 0-6 is Acid 8-14 is Base. pH of 7 is neutral. Recheck your work *hint* *hint* water is neutral. Spit is above 7 so is base.

8 0
3 years ago
Other questions:
  • Can anyone help me with this? The picture may or may not show up on your screen and if not I can probably type it out
    14·1 answer
  • what does NaBr + Ca(OH)2 -> CaBr2 + NaOH create? is it a physical or chemical or physical? for an example for what does it cr
    5·1 answer
  • Reese put gravel, sand, and clay in a bottle. She added some water, shook the bottle, and left it for an hour. What did she see
    9·2 answers
  • When light strikes a transparent material, most of the light is absorbed or reflected.
    15·2 answers
  • For each pair of structures, determine whether they represent different compounds or a single compound.
    15·1 answer
  • A golden nugget displaces 89.60 mL of water when submerged. If the density of gold is 19.32 g/cm² what is the mass of the nugget
    14·1 answer
  • All matter has __. A.) COLOR B.) MASS C.) VOLUME D.) WEIGHT
    12·1 answer
  • Soil is best described as a pure substance or a mixture or a compound
    7·1 answer
  • The valency of both Oxygen and magnesium is 2 give reason <br><br>​
    7·1 answer
  • if the particles formed through fission have less mass than the starting material has the laaw of conversation of energy been br
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!