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
OLga [1]
1 year ago
5

2. Calculate the atomic mass of the following elements i. Silicon ii. Magnesium iii. Potassium.​

Chemistry
1 answer:
leva [86]1 year ago
5 0

Answer:atomic mass of silicon is 28

magnesium's atomic mass is 24

potassium atomic mass is 39

You might be interested in
The reaction AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) is a(n) ______________ reaction.
Temka [501]

Answer : The correct option is, (e) precipitation reaction

Explanation :

Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

Precipitation reaction : It is defined as the reaction in which an insoluble salt formed when two aqueous solutions are combined.

The insoluble salt that settle down in the solution is known an precipitate.

Single replacement reaction : A chemical reaction in which the more reactive element replace the less reactive element.

It is represented as,

A+BC\rightarrow AC+B

In this reaction, A is more reactive element and B is less reactive element.

Acid-base reaction : It is defined as the reaction in which an acid react with a base to give salt and water as a product.

The given chemical reaction is:

AgNO_3(aq)+NaCl(aq)\rightarrow AgCl(s)+NaNO_3(aq)

This reaction is a precipitation reaction in which the two aqueous solution silver nitrate and sodium chloride combined to give sodium nitrate solution and silver chloride as a precipitate. In precipitation reaction there is no changes in oxidation state of the element.

Hence, the correct option is, (e) precipitation

8 0
3 years ago
What is typically displayed on the y-axis of a solubility curve
tekilochka [14]
<span>Grams of solute per 100 grams of water</span>
4 0
3 years ago
Read 2 more answers
What do homologous structures, vestigial structures , and fossils provide evidence of?
antoniya [11.8K]
This question is confusing to me.
6 0
3 years ago
If the pressure on an ideal gas is increased, what will happen to the volume of the gas?
kumpel [21]
If the pressure on an ideal gas is increased, the volume of the gas will decrease. This can be predicted with the use of the ideal gas equation which is expressed as: PV = nRT. At constant temperature, we can say that pressure and volume are inversely related. Thus, as one value increase, the other decrease.
6 0
3 years ago
Read 2 more answers
Suppose that 13g of a nonelectrolyte is dissolved in 0.50 kg of benzene. The
sp2606 [1]

Answer:

128.98 g/Mol

Explanation:

ΔTb = Kb * m * i

Where;

ΔTb = boiling point elevation

Kb = boiling point constant

m = molality of the solution

i = Van't Hoff factor

Hence;

Where molality = number of moles of solute/mass of solvent in Kg

Number of moles of solute = mass/Molar mass

So;

80.61 - 80.10 = 2.53 * 13g/M/0.5 * 1

Where M is the molar mass of the solute

0.51 = 2.53 * 13g/M/0.5

0.51 = 2.53 * 13/M * 1/0.5

0.51 = 32.89/M * 1/0.5

0.51 * 0.5 = 32.89/M

0.255 M = 32.89

M = 32.89/0.255

M= 128.98 g/Mol

6 0
3 years ago
Other questions:
  • Estimate the molar mass of a gas that effuses at 1.6 times the effusion rate of CO2
    15·1 answer
  • Atoms in a stay in a fixed position and have no freedom to move.
    10·1 answer
  • If a jar of honey sits for a long time, sugar may crystallize in the jar. Describe two possible causes for the crystallization.
    10·1 answer
  • How many penicillin molecules would you have if you had a total of 36 hydrogen atoms? What would be the total atomic mass?
    11·1 answer
  • I need help with B and C
    14·1 answer
  • An 18.5 g sample of tin (molar mass = 118.7) combines with
    5·1 answer
  • Magnesium reacts with Oxygen gas forming Magnesium oxide as shown;
    8·1 answer
  • What is the formula mass of NaCl?
    14·1 answer
  • 8. The threats to biodiversity are except:.
    13·1 answer
  • Find the pH of the equivalence point(s) and the volume (mL) of 0.0372 M NaOH needed to reach the point(s) in titrations of(a) 42
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!