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
cluponka [151]
3 years ago
10

In the whole earth, the four most common elements (by mass) are oxygen, silicon, magnesium, and ________.

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0
I believe that the answer is iron.
dalvyx [7]3 years ago
5 0
Hey there!

<span>In the whole earth, the four most common elements (by mass) are oxygen, silicon, magnesium, and ________.

Answer: iron

Hope this helps
Have a great day (:
</span>
You might be interested in
1.-Identifica y menciona los elementos que
Rus_ich [418]

Answer:

y8y g8c g u to give give g gu tu tvtc8 ug fu t 7f to fu t7 to to tutorials

Explanation:

v8y to c g. fu uf gu t8 g8. g8 u g 8 g gi gi gi g gi if fu%:/"

5 0
3 years ago
If you take a part time job while you are still in school what might your opportunity scost be
yarga [219]

The opportunity costs of working part-time while attending high school could be studying time, grades, and your own free time. It depends on the person, how they do in school, but if it were for me, I would say the benefits outweigh the costs. I have enough time to study and still get good grades in school.

7 0
2 years ago
Read 2 more answers
Suppose the gas resulting from the sublimation of 1.00 g carbon dioxide is collected over water at 25.0◦c into a 1.00 l containe
jeyben [28]

Answer:

0.55 atm

Explanation:

First of all, we need to calculate the number of moles corresponding to 1.00 g of carbon dioxide. This is given by

n=\frac{m}{M_m}

where

m = 1.00 g is the mass of the gas

Mm = 44.0 g/mol is the molar mass of the gas

Substituting,

n=\frac{1.00 g}{44.0 g/mol}=0.0227 mol

Now we can find the pressure of the gas by using the ideal gas law:

pV=nRT

where

p is the gas pressure

V = 1.00 L is the volume

n = 0.0227 mol is the number of moles

R = 0.082 L/(atm K mol) is the gas constant

T = 25.0 C + 273 = 298 K is the temperature of the gas

Solving the formula for p, we find

p=\frac{nRT}{V}=\frac{(0.0227 mol)(0.082 L/(atm K mol))(298 K)}{1.00 L}=0.55 atm

8 0
4 years ago
What is the cell potential of an electrochemical cell that has the half-reactions shown below?
Karo-lina-s [1.5K]

Answer:

E°(Ag⁺/Fe°) = 0.836 volt

Explanation:

3Ag⁺ + 3e⁻ => Ag°;            E° = +0.800 volt

Fe° => Fe⁺³ + 3e⁻ ;             E° = -0.036 volt

_________________________________

Fe°(s) + 3Ag⁺(aq) => Fe⁺³(aq) + 3Ag°(s) ...    

E°(Ag⁺/Fe°) = E°(Ag⁺) - E°(Fe°) = 0.800v - ( -0.036v) = 0.836 volt

4 0
3 years ago
Before you start an investigation, you see the Hazard symbol for Electrical Hazard. What safety steps should you follow when con
Fantom [35]

Explanation:

Safety hazards means they are are the unsafe working conditions which can cause the workmen injury, illness, or death. Safety hazards are some of the most common risks at the workplace.

Electrical hazards may be defined as a place or a condition which is dangerous and where a person working can come in contact with electrical contact with some energized equipment or any electrical conductor. There is always danger or a chance for the workmen to get injury or get a flash burn while working.

The safety steps are :

1. Follow the instruction properly

2. Take proper safety measures like wearing gloves, shoes, not touching any live wires, etc.

3. Follow the clean up procedure properly.

7 0
3 years ago
Other questions:
  • How many Cl- ions are there in 400.5 grams of AlCl3?
    15·2 answers
  • Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?
    7·1 answer
  • Which term best bescribes a mixture of sand and marbles
    12·1 answer
  • __________ refers to the total energy of a system.
    12·2 answers
  • Which is the force of attraction that holds atoms together?
    5·1 answer
  • At a certain temperature, a mixture of 2 gases, 11.2 g of oxygen and 104.75 of krypton exert a total pressure of 4.25 atm. What
    12·1 answer
  • Predict which of the following transition metal ions has a color Cr3+, Cd2+, Hg2+, V2+
    14·2 answers
  • Boyle’s law relates to volume and?
    9·1 answer
  • Nitrogen was heated from 17°C to 37°C. The original volume of nitrogen was 8.5 L. Find the new volume in liters assuming P and n
    9·1 answer
  • Which statements differentiate DNA and RNA? Select three options.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!