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lutik1710 [3]
3 years ago
6

The graph above plots gravitational force versus distance for two asteroids of equal mass (10 billion kg). When the distance bet

ween the asteroids is 9,000 km, the gravitational force between them is about 82 N.
Based on the trend shown in the graph, predict the force between the asteroids when the distance between them increases to 9,500 km.
A.
about 9,200 N
B.
about 90 N
C.
1,700 N
D.
about 74 N

Chemistry
2 answers:
natima [27]3 years ago
7 0

Answer:ABOUT 74 N

Explanation: TOOK THE TEST ON STUDY ISLAND :)

inn [45]3 years ago
5 0

Answer:

74N

Explanation:

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Answer:

The correct answer is 187.7 J/Jg.

Explanation:

The formula for finding the specific heat of fusion is,  

Specific heat of fusion = Q/m

Here Q is the heat energy added, signified in kJ, and m is the mass of the object in kg.  

Based on the given information, the heat energy added or Q is 869 kJ and the mass of the ice is 4.6 Kg

Now putting the values in the formula we get,  

Specific heat of fusion = Q/m

Specific heat of fusion = 863 kJ / 4.6 Kg = 187.7 J/Kg

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3 years ago
Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 9.32 g of ethane is
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Answer:

There will remain 8.06 grams of ethane

Explanation:

Step 1: Data given

Mass of ethane = 9.32 grams

Mass of oxygen = 12.0 grams

Molar mass ethane = 30.07 g/mol

Molar mass oxygen = 32.00 g/mol

Step 2: The balanced equation

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

Step 3: Calculate moles ethane

Moles ethane = mass ethane / molar mass ethane

Moles ethane = 9.32 grams / 30.07 g/mol

Moles ethane = 0.3099 moles

Step 4: Calculate moles oxygen

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O2 is the limiting reactant. It will completely be consumed ( 0.375 moles)

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It should be  <em>Ultraviolet rays </em>because they are moderate in energy.


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