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3 years ago

Homework: Earth's Outer Layer

Chemistry

1 answer:

Cerrena [4.2K]3 years ago

7 0

Answer:

It goes the crust mantle outer core and inner core. The crust is what we are standing on it has dirt, rock, stone, the mantle it has lots of silicate rocks and magnesium. The outer core has liquid nickel and iron and the inner core has solid metals

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The unit meter per second per second (m/s²) would be used to measure

Y_Kistochka [10]

Answer:

$\boxed{\text{A) Acceleration}}$

Explanation:

m/s is the unit for speed, so (m/s)/s is the rate of change of speed.

The rate of change of speed is acceleration.

B), C), and D) are wrong. They all have the units of m/s.

5 0

3 years ago

A19.0g sample of brass, which has a specific heat capacity of 0.375·J*g^−1°C−, is dropped into an insulated container containing

djverab [1.8K]

Answer:

The final temperature is 20.3 °C

Explanation:

Considering that:-

Heat gain by water = Heat lost by brass

Thus,

$m_{water}\times C_{water}\times (T_f-T_i)=-m_{brass}\times C_{brass}\times (T_f-T_i)$

Where, negative sign signifies heat loss

Or,

$m_{water}\times C_{water}\times (T_f-T_i)=m_{brass}\times C_{brass}\times (T_i-T_f)$

For water:

Mass = 300.0 g

Initial temperature = 20.0 °C

Specific heat of water = 4.184 J/g°C

For brass:

Mass = 19.0 g

Initial temperature = 81.7 °C

Specific heat of water = 0.375 J/g°C

So,

$300.0\times 4.184\times (T_f-20.0)=19.0\times 0.375\times (81.7-T_f)$

$1255.2T_f-25104=582.1125-7.125T_f$

$1262.325T_f=25686.1125$

$T_f = 20.3\ ^0C$

<u>Hence, the final temperature is 20.3 °C</u>

6 0

3 years ago

What is the definition of DNA in meiosis

mario62 [17]

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4 years ago

In what direction and how many spaces must you move the decimal point to make the following conversion?

noname [10]

Answer:

600,000

Explanation:

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3 years ago

Unknown halogen X2 was added to each of two test tubes which contained aqueous NaCl and aqueous NaI, respectively. When hexane w

weeeeeb [17]

Answer: