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lutik1710 [3]
2 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]2 years ago
7 0

Answer:ABOUT 74 N

Explanation: TOOK THE TEST ON STUDY ISLAND :)

inn [45]2 years ago
5 0

Answer:

74N

Explanation:

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The atomic number of polassium and
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What volume of o2 is needed to react fully with 720. Ml of nh3
Galina-37 [17]

Ammonia undergoes combustion with oxygen to produce nitric oxide and water. The volume of the oxygen required to react with 720 ml of ammonia is 900 ml.

<h3>What is volume?</h3>

Volume is the area occupied by the substance and is the ratio of the mass to the density.

At STP, 1 mole of gas occupies 22.4 L of volume

Given,

Volume of ammonia reacted = 0.720 L

The combustion reaction is shown as,

\rm 4NH_{3} + 5O_{2} \rightarrow 4NO +6H_{2}O

From the stoichiometry of the reaction, it can be said that,

(4 \times  22.4) L of ammonia reacts with (5 \times  22.4) L of oxygen gas.

So, 0.720 L of  ammonia will react with:

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6 0
2 years ago
What element has a half-life = to 64
Virty [35]
The best answer is the isotope of strontium which is strontium-85. It has a half-life of about 64 days. The metal strontioum has four stable, naturally occurring isotopes which includes 84Sr (0.56%), 86Sr (9.86%), 87Sr (7.0%) and 88Sr (82.58%).
5 0
3 years ago
. How many grams of magnesium chloride can be produced by reacting 2 moles of chlorine gas with excess magnesium bromide? ____Cl
dlinn [17]

Answer: 190 g of magnesium chloride can be produced by reacting 2 moles of chlorine gas with excess magnesium bromide.

Explanation:

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According to stoichiometry :

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Thus 2 moles of Cl_2 will produce=\frac{1}{1}\times 2=2moles  of MgCl_2

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Thus 190 g of magnesium chloride can be produced by reacting 2 moles of chlorine gas with excess magnesium bromide

5 0
2 years ago
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