All categories

3 years ago

I am a main group or representative element. I am located in

Chemistry

1 answer:

lesya692 [45]3 years ago

5 0

Answer:

tantalum

i hope this helps<33 :)))))

You might be interested in

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

Why is soil conversation important

Vinvika [58]

Answer:

Soil conservation is important because soil is crucial for many aspects of human life as it provides food, filters air and water and helps to decompose biological waste into nutrients for new plant life. Soil can be drained away or contaminated, destroying it for use. Soil conversation involves working to reduce contamination and depletion.

Explanation:

hope this helps, pls mark brainliest :D

4 0

3 years ago

(Based on q = -sm∆T)

vekshin1

Answer:

Sn < Brass ≈ Zn < Al

Step-by-step explanation:

Sn < Brass ≈ Zn < Al

C/J·°C⁻¹g⁻¹: .0.246 < 0.418 ≈ 0.419 < 0.734

3 0

4 years ago

True or False: The first part of an organism’s scientific name is its genus and the second part is its species.

castortr0y [4]

It is True :)

IDXHXJXJXJCCJDDBXCJXJ

4 0

4 years ago

When calculating molar mass , can you round it or it has to be specific ?

Vlada [557]

For many (but not all) problems, you can simply round the atomic weights and the molar mass to the nearest 0.1 g/mole. HOWEVER, make sure that you use at least as many significant figures in your molar mass as the measurement with the fewest significant figures. In other words, never let your molar mass be the measured value that determines how many signficant figures to use in your answer!

3 0

4 years ago