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
Natasha2012 [34]
3 years ago
12

The sun rotates on it axis once every: 28 hours 120 days 25 days 9 hours

Chemistry
1 answer:
olganol [36]3 years ago
8 0

Answer:

Itś about 27 days so just pick 28!

Explanation:

Hope this helped!

You might be interested in
What type of solid is candle wax ? Amorphous or Crystalline?
ExtremeBDS [4]
<span>It is amorphous because it gets softer and softer, and it doesn't melt at a distinct temperature.

</span>
5 0
3 years ago
Read 2 more answers
Write the quantities 3 x 10^-4 cm and 3 x 10^4 km in ordinary notation
Goshia [24]
To write quantities in ordinary notation, you need to notice the power of the exponent.
If the power is positive, then you move the decimal point to the right by the number the power in exponent tells you.
If the power is negative, then you move the decimal point to the left by the number the power in exponent tells you.

We have:
3 x 10^-4 : the power of exponent is negative, therefore, we will move the decimal point 4 places to the left.
3 x 10^-4 = 0.0003 km

3 x 10^4 : he power of exponent is positive, therefore, we will move the decimal point 4 places to the right.
3 x 10^4 = 30000 km
6 0
3 years ago
Which of the following statements are FALSE of models? (select all that applies)
ira [324]

Answer:

A B and C

Explanation:

Hopefully this helps

7 0
3 years ago
33.56 g of fructose (C6H,206) and 18.88 g of water are mixed to obtain a 40.00 ml solution a. What is this solution's density? b
Darina [25.2K]

Explanation:

Mass of fructose = 33.56 g

Mass of water =  18.88  g

Total mass of the solution =  Mass of fructose + Mass of water = M

M = 33.56 g + 18.88  g =52.44 g

Volume of the solution = V = 40.00 mL

Density =\frac{Mass}{Volume}

a) Density of the solution:

\frac{M}{V}=\frac{52.44 g}{40.00 mL}=1.311 g/mL

b) Molar mass of fructose = 180.16 g/mol

Moles of fructose = n_1=\frac{ 33.56 g}{180.16 g/mol}=0.1863 mol

Molar mass of water = 18.02 g/mol

Moles of water= n_2=\frac{ 18.88 g}{18.02 g/mol}=1.0477 mol

Mole fraction of fructose in this solution:\chi_1

\chi_1=\frac{n_1}{n_1+n_2}=\frac{0.1863 mol}{0.1863 mol+1.0477 mol}

\chi_1=0.1510

Mole fraction of water = \chi_2=1-\chi_1=0.8490

c) Average molar mass of of the solution:

=\chi_1\times 180.16 g/mol+\chi_2\times 18.02 g/mol

=0.1510\times 180.16 g/mol+0.8490\times 18.02 g/mol=42.50 g/mol

d) Mass of 1 mole of solution = 42.50 g/mol

Density of the solution = 1.311 g/mL

d) Specific molar volume of the solution:

\frac{\text{Average molar mass}}{\text{Density of the mass}}

=\frac{42.50 g/mol}{1.311 g/mL}=32.42 mL/mol

5 0
3 years ago
Perform the following mathematical operation and report the answer to the correct number of significant figures? ( I have watche
professor190 [17]

0.008 ÷ 51.3 = 0.0002

Sig Figs

1

0.0002

Decimals

4

0.0002

Scientific Notation

2 × 10-4

E-Notation

2e-4

Words

zero point zero zero zero two

I HOPE I HELP

7 0
2 years ago
Other questions:
  • If a glass bottle breaks into thousands of tiny pieces, what type of change occurs? A. physical only B. chemical only C. physica
    5·2 answers
  • A 25.0 ml sample of an unknown monoprotic acid was titrated with 0.12 m naoh. the student added 31.6 ml of naoh and went past th
    5·1 answer
  • What is the density of an object with a mass of 7.92g and a volume of 3.25mL? 
    9·1 answer
  • A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directio
    5·2 answers
  • Ethylene, a gas found in nature, is commonly used to ripen bananas and other fruits. Which compound is ethylene?
    14·1 answer
  • What is the symbol of gold ​
    11·2 answers
  • One of the governing laws of the universe is the thermodynamic law of entropy. Which choice best describes entropy?
    13·1 answer
  • A scientist has decided to develop a new cancer treatment. She has observed how patients react to current treatments, how the tr
    15·2 answers
  • Which method of heat transfer causes magma to circulate in the mantle?
    15·1 answer
  • PLEASE PLEASE PLEASE PLEASE HELP ME WITH THIS!!!!!!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!