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3 years ago

Help asp please thanks

Chemistry

1 answer:

-Dominant- [34]3 years ago

3 0

The answer would be wavelength, so b

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Help me please its urgent

Natalija [7]

Answer:

Calcite

Explanation:

The chart shows that calcite is higher than gypsum, but is lower than apatite. Therefore meaning that it can scratch gypsum But not able to the same to apatite.

7 0

3 years ago

In the electrolysis of molten lead bromide, what is the product at the anode?

Kisachek [45]

Answer:

it is the second one. Lead

5 0

3 years ago

A sample of propane (C3H8) has a mass of 0. 47 g. The sample is burned in a bomb calorimeter that has a mass of 1. 350 kg and a

Nady [450]

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

The specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.

The specific heat has been expressed as:

$q=mc\Delta T$

<h3 /><h3>Computation for the heat absorbed</h3>

The iron and calorimeter are in side the closed system. Thus, the energy released by the sample, has been equivalent to the energy absorbed by the calorimeter.

$q_{released}=q_{absorbed}\\
q_{released}=m_{calorimeter}\;c_{calorimeter}\;\Delta T$

The given mass of calorimeter has been, $m_{calorimeter}=1350\;\rm g$

The specific heat of the calorimeter has been, $c_{calorimeter}=5.82\;\rm J/g^\circ C$

The change in temperature of the calorimeter has been, $\Delta T=2.87^\circ \rm C$

Substituting the values for heat released:

$q_{released}= 1350\;\text g\;\times\;5.82\;\text J/\text g^\circ \text C\;\times\;2.87^\circ \text C\\
q_{released}=22,549.5\;\text J\\
q_{released}}=22.54\;\rm kJ$

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

Learn more about specific heat, here:

brainly.com/question/2094845

6 0

3 years ago

Five cell parts are listed below. Correctly match each cell part with its function. allows plant cells to trap light energy in o

topjm [15]

Vacuole - Stores Nutrients and Water.
Nucleolus - Where Ribosomes are made.
Chloroplasts - allows plant cells to trap light energy.
Cell Membrane - Controls which substances enter or exit a cell.
Cell Wall - Provides strength and Support for plant cells.
Hope I helped!

6 0

3 years ago

The term used to describe how light is reflected from a mineral’s surface is _____.

Mnenie [13.5K]

It is fluorescence
That means light reflecting

5 0

4 years ago