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3 years ago

Can someone help me with these two questions

Chemistry

1 answer:

sergiy2304 [10]3 years ago

6 0

4. The pressure of the inner core is higher than the outer core

5. The coolest layers are farthest from the core

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At the end of seafloor spreading, where does the molten rock solidify?

olganol [36]

Answer:

As the two plates move apart from each other, which often occurs at a rate of several centimetres per year, molten rock wells up from the underlying mantle into the gap between the diverging plates and solidifies into new oceanic crust. Spreading centres are found at the crests of oceanic ridges.

Explanation:

I found this answer by taking notes in class

8 0

3 years ago

Which equation represents the first electron affinity of chlorine?

mars1129 [50]

Answer:
Option-A [Cl (g) + e⁻ → Cl⁻ (g)] is the correct answer.

Explanation:
First electron affinity is the amount of heat evolved when an electron is added to a neutral atom.
Such problems often come in questions related to Born-Haber Cycle topic. Let suppose Mg and Cl₂ is reacted to form MgCl₂ crystal.

Then the Cl₂ gas is first atomized as follow,

Cl₂ → 2 Cl

After atomization an electron is added to neutral chlorine atoms, as,

Cl + e⁻ → Cl⁻

So, option A is correct choice.

7 0

3 years ago

Which are examples of science rather than pseudoscience? Check all that apply. People can get rid of hiccups by holding their br

g100num [7]

Answer:

1. People can get rid of hiccups by holding their breath 2. Going outside with wet hair will cause a cold 3. People should not swim right after eating

Explanation:

8 0

3 years ago

Read 2 more answers

Ammonium perchlorate is the solid rocket fuel used by the U.S. Space Shuttle. It reacts with itself to produce nitrogen gas , ch

SpyIntel [72]

Answer:

2.94 g of water are produced by this decomposition

Explanation:

We need to determine the reaction to solve this problem:

The reactant is the ammonium perchlorate

The products are N₂, Cl₂, O₂ and H₂O

The reaction is: 2NH₄ClO₄ → N₂ + Cl₂ + 2O₂ + 4H₂O

We convert the mass of the reactant to moles:

9.6 g . 1 mol / 117.45 g = 0.0817 moles

Ratio is 2:4. Let's make a rule of three:

2 moles of perchlorate produce 4 moles of water.

Then, 0.0817 moles of perchlorate will produce (0.0817 . 4)/2 = 0.163 moles

We convert the moles of produced water, to mass (g)

0.613 mol . 18 g / 1mol = 2.94 g

8 0

3 years ago

Explains the different terms used in chemical effects of electric current

BabaBlast [244]

Answer:

Various effects can be seen when the current is flown in a circuit. The major effects of electric current are heating, chemical, and magnetic effects.Passage of current through chemical solutions causes chemical reactions to require place.

Explanation:

I hope its helpful to u

7 0

3 years ago