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vodka [1.7K]
3 years ago
9

How are stars and comets different?(2 points)

Chemistry
2 answers:
Firlakuza [10]3 years ago
4 0

Answer:

Its D "A star is made up of Ice, rocks, and dust, while a comet is made up of burning gases."

Explanation:

evablogger [386]3 years ago
3 0

Answer:

A star is made up of burning gases, while a comet is made up of ice, gases, rocks, and dust.

Explanation:

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How much energy is required to melt 76.941g of ice
olga55 [171]

Answer:

Q=25.7 Kj

Explanation:

76.941 g H2O*1 mol/18.016= 4.27 Mol H20

(4.27 Mol H2O)(6.009 Kj/Mol)

Q=25.7 Kj

5 0
3 years ago
what is the empirical formula of a compound if a sample contains 8.52g of carbon and 1.43 grams of hydrogen?
motikmotik

Answer:

Ultra ng 5

Palitan konang 6 Gems

Comment base❤

<h3> %Legit✔️</h3>
6 0
3 years ago
Do you guys know any cool app for revision apart from quiz let
hammer [34]
Kahoot, there are some pretty great reviews on there but you may need to do some searching
7 0
3 years ago
What evidence supports a conservation law? 6 CO2 → C6H12O6 6 O2 6 CO2 6 H2O light → C6H12O6 6 O2 6 H2O light → C6H12O6 6 O2 6 CO
docker41 [41]

The law of conservation has been stated that the mass and energy has neither be created nor destroyed in a chemical reaction.

The law of conservation has been evident when there has been an equal number of atoms of each element in the chemical reaction.

<h3>Conservation law</h3><h3 />

The given equation has been assessed as follows:

  • \rm 6\;CO_2\;\rightarrow\;C_6H_1_2O_6

The reactant has absence of hydrogen, while hydrogen has been present in the product. Thus, the reaction will not follow the law of conservation.

  • \rm 6\;O_2\;+\;+\;6\;CO_2\;+\;6\;H_2O\;+\;Light\;\rightarrow\;C_6H_1_2O_6

The number of atoms of each reactant has been different on the product and the reactant side. Thus, the reaction will not follow the law of conservation.

  • \rm 6\;O_2\;+\;6\;H_2O\;+\;Light\;\rightarrow\;C_6H_1_2O_6

The reactant has the presence of carbon, while it has been absent in the reactant. Thus, the reaction will not follow the law of conservation.

  • \rm 6\;O_2\;+\;6\;CO_2\;\rightarrow\;3\;C_6H_1_2O_6\;+\;3\;O_2

The product has the presence of hydrogen, while it has been absent in the reactant. Thus, the reaction will not follow the law of conservation.

Learn more about conservation law, here:

brainly.com/question/2175724

4 0
3 years ago
Please help urgent Balance the following word equation:
LekaFEV [45]

Answer:

AlCl3 + 3Na > Al + 3NaCl

Explanation:

AlCl3+Na → Al + NaCl

Al =1 Al=1

Cl =3 Cl = 1

Na=1. Na = 1

so balance

and it would be

Alcl3 + 3Na → Al + 3NaCl

8 0
3 years ago
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