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denis23 [38]
2 years ago
13

What is the mass of 0.5 moles of hydrogen gas

Chemistry
1 answer:
statuscvo [17]2 years ago
6 0

Answer:

1G

Explanation:

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The polarity of the water molecule aids in dissolving compounds. This is demonstrated by all but which statement?A)The water mol
never [62]

Answer:

The correct option is;

A) The water molecules group together in clumps.

Explanation:

To answer the question, we look at each option as follows

A)  The water molecules group together in clumps

This does not aid dissolution of compounds as clumping excludes non polar molecules, making them less soluble.

B) The partial negative oxygen atom end of the water molecule surround cations.

When an ionic compound such as NaCl is dissolved in water, the oxygen atoms surround the positive Na⁺ cations in the solution.

C) The partial positive hydrogen atom end of the water molecule surround anions

When the ionic NaCl compound  is dissolved in water, the hydrogen atoms surround the negative Cl⁻ anions  in the solution.

D) The water molecules also dissolve nonelectrolytes by creating a hydration sphere around the molecule.

Water is able to dissolve nonelectrolytes  by creating an hydration sphere or hydration shell around the molecule.

3 0
3 years ago
Read 2 more answers
Which is the atomic number of an atom with six valence electrons
Finger [1]
6 because all atomic numbers equal the number of electrons
7 0
3 years ago
For the following reaction,
jeka94

Answer:

The answer to your question is:

1.- CO

2.- 0.414 moles of CO2

Explanation:

Data

                               2CO   + O2      ⇒    2CO2

CO = 0.414 moles

O2 = 0.418

 

Process

theoretical ratio   CO/O2 = 2/1 = 1

experimental ratio  CO/O2 = 0.414/0.418 = 0.99

Then the limiting reactant is CO

2.-

                    2 moles of CO ---------------  2 moles of CO2

                    0.414 moles of CO ---------  x

                   x = (0.414 x 2) / 2

                   x = 0.414 moles of CO2

                   

5 0
3 years ago
60 POINTS + BRAINLIEST !! PLEASE HELP!!
uranmaximum [27]
To get moles. divide mass by molar mass.Molar mass of
Na is 23
and for Cl is 35.5.
the total molar mass of NaCl is 23+35.5 = 58.5mol/gUse the mass and divide by this number30.22g divide by 58.5mol/g and you will get 0.5166 mole.
Since the molecule has 1 Na to 1 Cl, and that the number of moles for NaCL is 0.5166. All of them would be 0.5166molesNa = 0.5166 x 1 = 0.5166molesCl = 0.5166 x 1 = 0.5166moles
to get number of atoms. Multiply your mole by Avogadro number which is 6.022x10^23Na = 0.5166 x 6.022E23 = 3.111x10^23Cl =  0.5166 x 6.022E23 = 3.111x10^23
5 0
3 years ago
Which would be most suitable for measuring 2.7 mL of ethanol for addition to a reaction with acidified dichromate?
pochemuha

Answer : The correct option is, (C) 10-mL volumeric pipet.

Explanation :

Graduated cylinder : It is a measuring cylinder that is used to measure the volume of a liquid. It has a narrow cylindrical shape. The marked line drawn on the graduated cylinder shows the amount of liquid that has been measured.

Pipet : It is a type of laboratory equipment that is used to measure the volume of a liquid. It is small glass tube and the marked line drawn on the pipet. It is used to accurately measure and transfer of volume of liquid from one container to another.

Volumetric flask : It is a type of laboratory tool that is also used for measuring the volume of liquid. It is used to make up a solution to a known volume. It measure volumes much more precisely than beakers.

Beaker : It is a type of laboratory equipment that has cylindrical shape and it is used for the mixing, stirring, and heating of chemicals.

As per question, we conclude that the pipet is most precise than other devices because in pipet the marking lines are more accurate. Thus, it can be used to measure volume to precision.

Hence, the correct option is, (C) 10-mL volumeric pipet.

8 0
3 years ago
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