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svet-max [94.6K]
3 years ago
8

What force pulled the solar system together out of a cloud of gas and dust

Chemistry
1 answer:
REY [17]3 years ago
8 0
Gravity
Approximately 4.5 billion years ago, gravity pulled a cloud of dust and gas together to form our solar system.
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Three separate 3.5g blocks of al, cu, and fe at 25°c each absorb 0.505 kj of heat. which block reaches the highest temperature?
77julia77 [94]

The energy can be shown as:

Q = ms dT

Whereas, m is the mass of block

s is specific heat

dT is change in temperature.

Copper block having the lowest specific heat and thus having the higher change in temperature and therefore having the higher final temperature.

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Bacteria consume other organisms for food, making them heterotrophs. True or False?​
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I would say true!

Explanation:

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The variables _______ and ________ affect the gravitational force between objects.
anastassius [24]
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5 0
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2H2 + O2 --> 2H2O can be classified as what type of reaction?
Sveta_85 [38]
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Which of the following solutions would have [Fe3+] = 0.020 M?
Shalnov [3]

Answer:

None of the given options

Explanation:

Let's go case by case:

A. No matter the volume, the concentration of Fe(NO₃)₃ (and thus of [Fe³⁺] as well) is 0.050 M.

B. We can calculate the moles of Fe₂(SO₄)₃:

  • 0.020 M * 0.80 L = 0.016 mol Fe₂(SO₄)₃

Given that there are two Fe⁺³ moles per Fe₂(SO₄)₃ mol, in the solution we have 0.032 moles of Fe⁺³. With that information in mind we <u>can calculate [Fe⁺³]</u>:

  • 0.032 mol Fe⁺³ / 0.80 L = 0.040 M

C. Analog to case A., the molar concentration of Fe⁺³ is 0.040 M.

D. Similar to cases A and C., [Fe⁺³] = 0.010 M.

Thus none of the given options would have [Fe⁺³] = 0.020 M.

7 0
2 years ago
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