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
mixas84 [53]
3 years ago
11

The Sun appears to move in the sky because

Chemistry
2 answers:
Amiraneli [1.4K]3 years ago
4 0

Answer:

a because the earth rotates on its axis

atroni [7]3 years ago
4 0
A) Earth rotates on its axis
You might be interested in
Pls just help me out the vid is 6 Chemical Reactions That Changed History; need help on no.6. I DON’T EVEN KNOW HOW TO SOLVE IT
GREYUIT [131]

Explanation:

HCL you can do it yourself .try again

4 0
3 years ago
Heat is which of the following???
Sergeu [11.5K]
A measure of thermal energy transferred between two different bodies at different temperatures would be the correct answer. So, the third option.
5 0
3 years ago
5. What are the relative rates of diffusion for methane, CH, and oxygen, O2? If O2 la travels 1.00 m in a certain amount of time
11Alexandr11 [23.1K]

Answer:

The relative rates of diffusion for methane and oxygen is 1.4142.

Methane gas will be able to travel 1.4142 meter in the same conditions.

Explanation:

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. Mathematically written as:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

We are given:

Molar mass of methane gas, m = 16 g/mol

Molar mass of oxygen gas,m' = 32 g/mol

By taking their ratio, we get:

\frac{d_{CH_4}}{d_{O_2}}=\sqrt{\frac{m'}{m}}

\frac{d_{CH_4}}{d_{O_2}}=\sqrt{\frac{32}{16}}=1.4142

The relative rates of diffusion for methane and oxygen is 1.4142.

If oxygen gas travels 1 meters in time t.

Rate of diffusion of oxygen =d_{O_2}=\frac{1 m}{t}

If methane gas travels travels in y meters in time t.

Rate of diffusion of methane=d_{CH_4}=\frac{y }{t}

\frac{d_{CH_4}}{d_{O_2}}=\frac{\frac{y }{t}}{\frac{1 m}{t}}=1.4142

y = 1.4142 m

Methane gas will be able to travel 1.4142 meter in the same conditions.

8 0
3 years ago
PLEASE ANSWER CORRECTLY PLEASE
lutik1710 [3]
The answer is 7. Valence electrons are the electrons in the very last shell, so we need to look at the outer “circle” and count the electrons, or the little black dots. There are 7 in the last shell.
6 0
3 years ago
PLS help
viktelen [127]

Answer:

d . Sc2O5

Explanation:

Hello,

In this case, when forming oxides from a metal and oxygen, for us to find out each element's subscript, we must exchange them as shown below, considering +5 for scandium:

Sc^{+5}_2O^{-2}_5

For that reason, the answer is d . Sc2O5

Best regards.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is a unit of volume of liquids? (4 points) Gram Liters Liters per cubic gram Gram per cubic centimeter
    8·2 answers
  • When you pull on a window shade,you exert what?
    15·1 answer
  • Compare the relative charge and mass of each of the subatomic particles? pleaseeee help me this is for a homework in my chemistr
    5·1 answer
  • What is the concentration of chloride in a solution made with 0.808 grams of CaCl2 and 250.0 ml of water.?
    15·1 answer
  • Which molecule is pentanoic acid?<br> ОА.<br> Н<br> 1<br> НЕС-ОН<br> ОВ.<br> Н<br> ОН<br> ор.н.н
    5·1 answer
  • 2C6H6+15O2 12CO2+6H2O<br><br> HOW MANY GRAMS OF H2O ARE EQUIVALENT TO 30 MOLES H20?
    15·1 answer
  • I'LL MARK U BRAINLIEST-How many kW does a nuclear power plant use in a year?
    7·1 answer
  • Pleas help with 2 and 4 for brainliest
    10·1 answer
  • A sample of chlorine gas is stored at a temperature of -25oC. If the chlorine gas's temperature is raised to 52oC, its volume in
    6·1 answer
  • Question 28 (4 points)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!