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sergeinik [125]
3 years ago
8

As shown in the image above, the Earth's outermost layer is divided into several tectonic plates. Which of the following is true

about these plates?
A.
The plates move either toward or alongside each other, but not away from each other.

B.
Some plates move toward each other, while others move away from or alongside each other.

C.
All of Earth's tectonic plates move toward each other.

D.
All of Earth's tectonic plates move away from each other.
Chemistry
1 answer:
Tems11 [23]3 years ago
7 0
The answer is B.) Some plates move toward each other, while others move away from or alongside each other.


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How many grams of ice at -13 deg C must be added to 711 grams of water that is initially at a temperature of 87 deg C to produce
Basile [38]

Answer:

The answer to your question is m = 4.7 kg

Explanation:

Data

Ice                                   Water

mass = ?                          mass = 711 g

T₁ = -13°C                         T₁ = 87°C

T₂ = 10°C                         T₂ = 10°C

Ch = 2090 J/kg°K          Cw = 4180 J/kg°K

Process

1.- Convert temperature to kelvin

T₁ = 273 + (-13) = 260°K

T₁ water = 87 + 273 = 360 °K

T₂ = 10 + 273 = 283°K

2.- Write the equation of interchange of heat

                 - Heat lost = Heat absorbed

               - mwCw(T₂ - T₁) = miCi(T₂ - T₁)

-Substitution

              - 0.711(4180)(10 - 87) = m(2090)(10 - (-13))

- Simplification

                            228842.46 = 48070m

                            m = 228842.46/48070

-Result

                            m = 4.7 kg

4 0
4 years ago
A compound is formed when 12.2 g Mg combines completely with 5.16 g N. What is the percent composition of this compound? Please
STALIN [3.7K]
3Mg + N₂= Mg₃N₂
n(Mg)=12,2g÷<span>24,4g/mol=0,5mol-limiting reagent
</span>n(N₂)=5,16g÷28g/mol=0,18mol
n(Mg₃N₂):n(Mg)=1:3, n(Mg₃N₂)=0,166mol, m(Mg₃N₂)=0,166·101,2=16,8g.
%(N)= 2·Ar(N)÷Mr(Mg₃N₂) = 2·14÷101,2=27,66%=0,2766
%(Mg) = 3·Ar(Mg)÷Mr(Mg₃N₂)= 3·24,4÷101,2=72,34% or 100% - 27,66%= 72,34%.
4 0
3 years ago
Steps of scientific inquiry?
vlabodo [156]
1. Figure out a problem
2. Research
3. Hypothesis  
4. Experiment
5. Analyze results 
6. Conclusion 
7. Communicate your results

Hope This Helps. :D <span />
8 0
3 years ago
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Given the balanced equation representing a reaction:
notsponge [240]

Answer:

it is a base because they accept H+ ions

Explanation:

4 0
3 years ago
The energy required to remove an electron from a neutral atom is known as its:
Otrada [13]

Answer:

Ionization energy

Explanation:

4 0
3 years ago
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