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
enot [183]
2 years ago
15

Which observations supported Wegener’s theory that the continents move over time ??

Chemistry
1 answer:
puteri [66]2 years ago
4 0
The answer to this question is all of the above.
You might be interested in
C. Neither a Physical or Chemical Changu
Nutka1998 [239]

Explanation:

I think B a chemical change

5 0
3 years ago
3 points
vfiekz [6]

Answer:

density=6.74g/ml

:320g÷47.5ml

d=6.74g/ml

thank you

<em><u>I </u></em><em><u>hope</u></em><em><u> </u></em><em><u>this </u></em><em><u>is </u></em><em><u>helpful</u></em>

8 0
3 years ago
Which part of the circulatory system contains blood rich in carbon dioxide
horrorfan [7]
The answer is the veins
8 0
3 years ago
20 PTS!!
uranmaximum [27]
The correct answer is C because a Controlled Experiment tests only one factor at a time and consists of a control group and one or more experimental groups.
6 0
1 year ago
What is the empirical formula of a compound with a percent composition of 22.5% Phosphorous and 77.5% Chlorine?
sashaice [31]

Answer:

\boxed {\boxed {\sf PCl_3}}

Explanation:

We are given the percent composition: 22.5% phosphorus and 77.5% chlorine.

We can assume there are 100 grams of this compound. We choose 100 because we can simply use the percentages as the masses.

  • 22.5 g P
  • 77.5 g Cl

Next, convert these masses to moles, using the molar masses found on the Periodic Table.

  • P: 30.974 g/mol
  • Cl: 35.45 g/mol

Use the molar masses as ratios and multiply by the number of grams. 22.5 \ g \ P  * \frac {1 \ mol \ P }{30.974 \ g \ P}= \frac {22.5 \ mol \ P }{ 30.974} = 0.7264157035 \ mol \ P

77.5 \ g \ Cl  * \frac {1 \ mol \ Cl }{35.45 \ g \ Cl}= \frac {77.5 \ mol \ Cl }{ 35.45} \ =2.186177715 \ mol \ Cl

Divide both of the moles by the smallest number of moles to find the mole ratio.

\frac {0.7264157035} {0.7264157035} = 1

\frac {2.186177715}{0.7264157035}=3.009540824 \approx 3

The mole ratio is about 1 P: 3 Cl, so the empirical formula is written as:<u> PCl₃</u>

4 0
2 years ago
Other questions:
  • How many grams of solid barium sulfate form when 25.0 ml of 0.160 m barium chloride reacts with 68.0 ml of 0.055 m sodium sulfat
    9·1 answer
  • What is the correct Lewis structure for Acetylene C2H2?
    12·1 answer
  • What is equal to the number of particles in 36 grams of carbon-12?
    6·1 answer
  • A chemist dissolves 239 mg of pure potassium hydroxide in enough water to make up of solution. Calculate the pH of the solution.
    11·1 answer
  • A solution of LiCl in water has XLiCl = 0.0800. What is the molality? A solution of LiCl in water has XLiCl = 0.0800. What is th
    10·1 answer
  • Write out the balanced equation for the following word equation. Use the proper state abbreviations for each of the reactants an
    6·1 answer
  • If you could answer it would be a huge help, thank you!
    5·2 answers
  • A gas occupies a volume of 67.54 liters at 158°C and 4.87 atm pressure. Calculate the number of moles of this gas.
    12·1 answer
  • Which equation would be used to calculate the rate constant from initial<br> concentrations?
    15·2 answers
  • Based on the shapes of the water drops in part D, how does the attractive force between water and wax compare to the attractive
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!