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
Kruka [31]
2 years ago
13

hellllpppppp pleaseeeeee i will give brainliest and don't forget to show proof, don't say "i already learned this" or "just trus

t me". I need proof and if you right then i'll brainliest you!

Chemistry
1 answer:
Leni [432]2 years ago
3 0
It’s c sun moon and earth line up with the moon in the middle
You might be interested in
If a 60-g object has a volume of 30 cm3, what is its density? 2 g/cm3 0.5 cm3/g 1800 g * cm3 none of the above
jasenka [17]

Answer : The density of an object is, 2g/cm^3

Solution : Given,

Mass of an object = 60 g

Volume of an object = 30cm^3

Formula used :

\text{Density of an object}=\frac{\text{Mass of an object}}{\text{Volume of an object}}

Now put all the given values in this formula, we get the density of an object.

\text{Density of an object}=\frac{60g}{30cm^3}=2g/cm^3

Therefore, the density of an object is, 2g/cm^3

6 0
2 years ago
The psychoactive drug sold as a methamphetamine - "speed" (c10h15n) - undergoes a series of reactions in the body; the net resul
Phoenix [80]

Answer: The coefficient of nitrogen in the given equation is 2.

Explanation: The reaction for the oxidation of methamphentamine with oxygen gas in the body is given by:

4C_{10}H_{15}N(s)+55O_2(g)\rightarrow 40CO_2(g)+30H_2O(l)+2N_2(g)

By Stoichiometry,

4 moles of methamphentamine reacts with 55 moles of oxygen gas to produce 40 moles of carbon dioxide gas, 30 moles of water and 2 moles of nitrogen gas.

Coefficient of C_{10}H_{15}N=4

Coefficient of O_2=55

Coefficient of CO_2=40

Coefficient of H_2O=30

Coefficient of N_2=2

Hence, the coefficient of nitrogen in the given equation is 2.

8 0
2 years ago
a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc
ladessa [460]

Answer:

The molarity of the solution is 1.1 \frac{moles}{liter}

Explanation:

Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

molarity=\frac{number of moles of solute}{volume}

Molarity is expressed in units \frac{moles}{liter}

In this case

  • number of moles of solute= 0.564 moles
  • volume= 0.510 L

Replacing:

molarity=\frac{0.564 moles}{0.510 L}

Solving:

molarity= 1.1 \frac{moles}{liter}

<u><em>The molarity of the solution is 1.1 </em></u>\frac{moles}{liter}<u><em></em></u>

4 0
2 years ago
Its common allotropes are red and white
astraxan [27]
The most common allotropes are:-
White phosphorus 
Red phosphorus
The red one is an intermediate phase between white and violent phosphorus. 
7 0
3 years ago
A sample originally contains 24 grams of a radioactive isotope. After 18 days, 18.8 grams of the isotope remain in the sample. W
LenKa [72]
Around 36 or 37 days, because of the decimal
8 0
2 years ago
Other questions:
  • At 10°c one volume of water dissolves 3.10 volumes of chlorine gas at 1.00 atm pressure. what is the henry's law constant of cl2
    6·1 answer
  • What types of elements are shown in the polyatomic ions in model 1?
    12·1 answer
  • What is the correct name for the molecular compound n2s4?
    12·1 answer
  • How many grams of KCI can be dissolved in 100 grams of water at 10 degree celsius
    15·1 answer
  • The answer to this question is D as it says in the answer sheet of the question paper but how?
    5·1 answer
  • 4. Describe how you will measure the volume of a piece of stone​
    5·1 answer
  • 4. What is the SI unit for mass
    15·2 answers
  • Two types of liquids, two types of gases, two types of solids.
    9·2 answers
  • Would the size of an item affect whether or not it is flammable?
    12·1 answer
  • What is an allotrope?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!