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
Aleks04 [339]
3 years ago
15

Why might it be useful to determine the elements that a planet or moon is made up of?

Chemistry
1 answer:
GuDViN [60]3 years ago
5 0

to see if its copatible with our environment or to see if there is any unkown element, otherwise i dont know

if wrong very sorry

You might be interested in
Calculate the mass, in grams, of a single xenon atom (mxe = 131.29 amu ).
Mariana [72]

Answer is 2.18017\times10^{-22}gms.

Explanation: To calculate the mass of 1 Xe-atom , we will require atomic mass of Xe which is 131.29amu.

This atomic mass is the mass of 1 mole of 1 Xe-atom. One mole of Xe-atom is 6.022\times10^{23} atoms of Xe. We will use this relation to convert Mass of Xe-atom into grams.

\frac{\text{mass of 1 atom}}{atom}=\frac{\text{mass of 1 mole of atom}}{6.022\times10^{23}atoms}

\text{mass of 1 atom}=\frac{\text{mass of 1 mole of atom}}{6.022\times10^{23}}

\text{mass of 1 Xe-atom}=\frac{131.29}{6.022\times10^{23}}

\text{mass of 1-Xe atom}=21.8017\times10^{-23}gms

                                               =2.18017\times10^{-22}gms


5 0
3 years ago
- Ibrahim and Emmanuel have been investigating the amount of copper sulfate that
nignag [31]

The boys can arrive at the conclusion that as temperature increases, a greater mass of copper sulfate is dissolved in water.

<h3>What is an experiment?</h3>

An experiment is a scientific investigation that seeks to obtain cause and effect relationships. There must be a dependent and an independent variable in every experiment.

The average of the temperature readings is; 20 + 30 + 40 + 50 + 60 + 70 + 80/7 =  50

They used an interval of 10 degrees for the temperature readings. The boys should have kept the heating time the same. The independent variable in this experiment is the temperature. The boys can arrive at the conclusion that as temperature increases, a greater mass of copper sulfate is dissolved in water.

Learn more about dependent and independent variables: brainly.com/question/967776

8 0
2 years ago
Which element has the element configuration 1s2 2s2 2p4
expeople1 [14]

Answer:

O(Oxygen)

Explanation:

2+2+4=8

And the eighth element of the periodic table is Oxygen

3 0
3 years ago
What is a percent volume of ethanol c2h60 in the final solution when 85 ml of it is diluted to a volume?
Ilya [14]
34% I believe

Hope this helps!
STSN
3 0
3 years ago
Consider the following reaction where Kc = 1.80×10-2 at 698 K:
Klio2033 [76]

Answer:

The system is not in equilibrium and the reaction must run in the forward direction to reach equilibrium.

Explanation:

The reaction quotient Qc is a measure of the relative amount of products and reagents present in a reaction at any given time, which is calculated in a reaction that may not yet have reached equilibrium.

For the reversible reaction aA + bB⇔ cC + dD, where a, b, c and d are the stoichiometric coefficients of the balanced equation, Qc is calculated by:

Qc=\frac{[C]^{c}*[D]^{d}  } {[A]^{a}*[B]^{b}}

In this case:

Qc=\frac{[H_{2} ]*[I_{2} ] } {[HI]^{2}}

Since molarity is the concentration of a solution expressed in the number of moles dissolved per liter of solution, you have:

  • [H_{2} ]=\frac{2.09*10^{-2} moles}{1 Liter}=2.09*10⁻² \frac{moles}{liter}
  • [I_{2} ]=\frac{4.14*10^{-2} moles}{1 Liter}=4.14*10⁻² \frac{moles}{liter}
  • [I_{2} ]=\frac{0.280 moles}{1 Liter}= 0.280 \frac{moles}{liter}

So,

Qc=\frac{2.09*10^{-2} *4.14*10^{-2}  } {0.280^{2} }

Qc= 0.011

Comparing Qc with Kc allows to find out the status and evolution of the system:

If the reaction quotient is equal to the equilibrium constant, Qc = Kc, the system has reached chemical equilibrium.

If the reaction quotient is greater than the equilibrium constant, Qc> Kc, the system is not in equilibrium. In this case the direct reaction predominates and there will be more product present than what is obtained at equilibrium. Therefore, this product is used to promote the reverse reaction and reach equilibrium. The system will then evolve to the left to increase the reagent concentration.

If the reaction quotient is less than the equilibrium constant, Qc <Kc, the system is not in equilibrium. The concentration of the reagents is higher than it would be at equilibrium, so the direct reaction predominates. Thus, the system will evolve to the right to increase the concentration of products.

Being Qc=0.011 and Kc=1.80⁻²=0.018, then Qc<Kc. <u><em>The system is not in equilibrium and the reaction must run in the forward direction to reach equilibrium.</em></u>

8 0
3 years ago
Other questions:
  • What is electropositivity and electronegativity? Between group 1 and group 17, which is electropositive and electronegative?
    14·1 answer
  • The diagram illustrates photosynthesis.
    11·2 answers
  • Which of the following elements, essential to life, is a trace element? Which of the following elements, essential to life, is a
    11·1 answer
  • An Arrhenius base yields which ion as the only negative ion in an aqueous solution?
    14·1 answer
  • 15. Discuss the various factors which affect the rate of evaporation. Latent heat
    9·1 answer
  • Human diseases such as tetanus, syphilis, typhoid, and cholera are caused by small cells that lack a nucleus. These cells can en
    6·2 answers
  • Two identical spoons are electroplated with Ag or Cd through the use of the electrolytic cells. A current of 5.00A was supplied
    6·1 answer
  • How did Mendel's experiments disprove the idea that we are simply a "blend" of our parents' traits?
    10·1 answer
  • Which might cause someone to be exempt from soccer practice? *
    5·1 answer
  • What is the chemical name of the compound K2SO4? Use the list of polyatomic ions and the periodic table to help you answer.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!