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Eddi Din [679]
3 years ago
6

What is the molar mass of magnesium

Chemistry
1 answer:
Westkost [7]3 years ago
6 0

hi cut person cute picture what's up my friend

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A helium balloon occupies a volume of 1.8 L at 5°C.<br>What volume will it occupy at 85.0°C?​
Zolol [24]
The volume of the balloon at 85.0°C would be 2.3L
5 0
3 years ago
How many moles of HBr are present in 250 ml of a 0.15 M HBr solution?
Fofino [41]

Answer:

0.0375 moles HBr

Explanation:

we are given;

  • Molarity of HBr solution as 0.15 M
  • Volume of the solution as 250 mL

We are required to determine the number of moles;

We need to know that;

Molarity = Moles ÷ Volume

Therefore;

Moles of HBr = Molarity of HBr solution × Volume of solution

Thus;

Moles of HBr = 0.15 M × 0.25 L

                      = 0.0375 Moles

Thus, the number of moles of HBr solute is 0.0375 moles

6 0
2 years ago
can someone help me more clearly understand the difference between heterogeneous and homogeneous? Give an example of each plz.
const2013 [10]
Heterogenous mixtures are unevenly mixed. Like oil and vinegar in vinaigrette if it is not emulsified well enough and they separate. Any case where two things are not evenly distributed within each other.

Homogenous mixtures are evenly mixed throughout. Like salt water or kool-aid (when it's mixed).

Hope this helps!
3 0
3 years ago
What is the speed 0.36<br> km/h in cm/s
azamat

Answer:

It's 10 cenimeters per second

7 0
3 years ago
what is the difference between a chemical bonds formed in the molecules of 02 and the chemical bonds formed in crystals of a NaC
Jobisdone [24]

Answer:

O2 is a covalent substance while NaCl is an ionic substance

Explanation:

In O2 molecule, the bond is between 2 oxygen atoms which are non - metals. Thus, this is a covalent bond since it involves 2 non metals.

Whereas, for the NaCl molecule, the bond is between a metal sodium (Na) and a non metal Chloride(Cl) and thus we can say this is an ionic bond.

Thus the difference is that O2 is a covalent substance while NaCl is an ionic substance.

8 0
2 years ago
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