All categories

3 years ago

Why do scientists prefer to describe matter by its mass rather than its weight?

Chemistry

2 answers:

Brut [27]3 years ago

4 0

Mostly because weight in the size of something and mass generalizes the amount in something <span />

daser333 [38]3 years ago

4 0

It is because weight can be change in different gravity but mass remains same in any condition 'cause it does not depend on any physical condition.

You might be interested in

A mixture of He

iragen [17]

Pretty sure it’s 13.6 , hope I get it right

7 0

3 years ago

Does anyone know how to do this?

mr Goodwill [35]

Answer:

this look hard

Explanation:

hmm

4 0

3 years ago

The heat of vaporization ΔHv of dichloromethane CH2Cl2 is 28.0 /kJmol . Calculate the change in entropy ΔS when 3.3g of dichloro

ella [17]

Answer:

$\Delta _VS=3.48x10^{-3}kJ=3.48J$

Explanation:

Hello,

In this case, the change in the entropy, by knowing the change in the enthalpy and the temperature for a vaporization process is given by:

$\Delta _VS=\frac{\Delta _VH}{T_V}$

Thus, we start by computing the change in the enthalpy for the 3.3g of dichloromethane as shown below:

$\Delta _VH=3.3gCH_2Cl_2 *\frac{1molCH_2Cl_2}{84.9gCH_2Cl_2}*28\frac{kJ}{molCH_2Cl_2} =1.09kJ$

Finally, the change in the entropy, considering the temperature in kelvins:

$\Delta _VS=\frac{1.09kJ}{(39.8+273.15)K}\\\\\Delta _VS=3.48x10^{-3}kJ=3.48J$

Best regards.

5 0

3 years ago

Which of the following are true about a block of ice at -10 degrees Celsius as you continue to apply heat.

LekaFEV [45]

<span>It’s temp will remain at 0 degrees Celsius until all the ice Melts
</span>

5 0

4 years ago

Atoms of elements in the same group have the same number of (blank) This is why they have similar chemical properties.

ANTONII [103]

Answer:

The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.

Explanation:

8 0

3 years ago