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
Gnoma [55]
3 years ago
13

Mr. Gordon's science students are studying scale models of the Sun-Earth-Moon system. Mr. Gordon is using this model to show his

students how the three bodies are arranged during a solar eclipse. Although he can show the correct positions, something is wrong about this scale model. What conclusion did the student's draw to be the problem? A)
The Sun is too small.


B)
The Earth is too small.


C)
The moon is too close to the Earth.


D)
The Earth should be closer to the Sun.
Chemistry
1 answer:
4vir4ik [10]3 years ago
3 0
The sun is too small
You might be interested in
Why are the wind speeds on gas giant planets so much greater than the wind speeds on earth?
Flura [38]
<span> reason is that there is no land to slow down the wind. Also, wind is caused by differences in air pressure</span>
8 0
3 years ago
The reaction takes place in water. What happens to the equilibrium when the pressure is increased? a)It favors formation of prod
OLga [1]

Answer:

I don't really get the options but it favoures the reactant side.

Explanation:

Increasing pressure favours the side with fewer moles of gas while decreasing pressure favours the side with the more moles of gas. E.g

If there is 0 moles of gas particles in the reactant side and 1 mole of gas particle in the product side, increasing pressure favours the reactants while decreasing pressure favours the product side.

With the explanations I have made, I hope the question is now clear to you.

6 0
3 years ago
What happens when a substance undergoes a physical change? Some physical properties change, but the substance keeps its identity
elena55 [62]
Some physical properties change, but the substance keeps its identity.

When dealing with these kind of questions, understand that the keyword here is physical change. Thus, all options that says no physical properties change are WRONG. So this leaves us with only 2 answers left. However, this is a physical change, no chemical change. Thus, the substance will keep its identity and not change.

8 0
3 years ago
Read 2 more answers
2. A copper wire can conduct electricity whether the wire is
Stells [14]

Answer:

Intensive

Explanation:

The electrical conductivity of a wire depends on its composition, not the length of the wire.

Hope this helps! If correct pls mark brainliest :)

7 0
2 years ago
. A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution is 1.05 g/mL. Th
mafiozo [28]

Answer:

The concentration of CaCl2 in this solution is 0.564 molar (option A)

Explanation:

Step 1: Data given

Mass of CaCl2 = 23.7 grams

Mass of water = 375 grams

Density of solution is 1.05 g/mL

Step 2: Calculate total mass

Total mass = mass of CaCl2 + mass of water

Total mass = 23.7 grams + 375 grams = 398.7 grams

Step 3: Calculate volume of the solution

Density = mass / volume

Volume = mass / density

Volume = 398.7 grams / 1.05 g/mL

Volume = 379.7 mL = 0.3797 L

Step 4: Calculate moles CaCl2

Moles CaCl2 = mass CaCl2 / molar mass CaCl2

Moles CaCl2 = 23.7 grams / 110.98 g/mol

Moles CaCl2 = 0.214 moles

Step 5: Calculate concentration

Concentration of CaCl2 = moles / volume

Concentration of CaCl2 = 0.214 moles / 0.3797 L

Concentration of CaCl2 = 0.564 mol / L = 0.564 molar

The concentration of CaCl2 in this solution is 0.564 molar (option A)

8 0
3 years ago
Other questions:
  • please i really need help, i dont understand any of this, if you could do the work for all and show me how to do it that would b
    5·1 answer
  • Sean drew this diagram and labeled an unknown gas as gas A. Which gas does A represent?
    6·2 answers
  • An investigation that is controlled
    9·2 answers
  • Having a difficult time please help me ;( I would appreciate whoever helps me thank you! If you can explain that would be awesom
    7·1 answer
  • Describing the Rock Cycle
    9·2 answers
  • Consider a sample of oxygen gas at 27 went a volume of 9.55L at a pressure of 2.97 atm. The pressure is changed to 8.25 atm and
    9·2 answers
  • Names for following compounds.<br> a)CO²<br> b)NaCI<br> c)S²CI²<br> d)NaF
    5·1 answer
  • ________ is the force that keeps planets in orbit around the sun
    6·2 answers
  • This is 10th grade Chemistry
    8·1 answer
  • What environment will produce the largest crystal sizes?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!