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Mamont248 [21]
1 year ago
8

Calculate the mass (in grams) of 250mL of ether at 25 oC. The density of

Chemistry
1 answer:
leonid [27]1 year ago
6 0
  • Volume=250mL
  • Density=0.71g/ml

\boxed{\sf Density=\dfrac{Mass}{Volume}}

\\ \sf{:}\implies Mass=Density(Volume)

\\ \sf{:}\implies Mass=0.71(250)

\\ \sf{:}\implies Mass=177.5g

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The successive ionization energies of a certain element are I1= 577.9 kJ/mol, I2 = 1820 kJ/mol, I3= 2750 kJ/mol, I4 = 11,600 kJ/
Maksim231197 [3]

Answer:

Aluminium

Explanation:

Ionization energy is the amount of energy needed to remove an electron from a gaseous atom to form a gaseous ion.

The difference between the third and fourth ionization energies is great. This indicates a group III element which is in the third period.

This element is Aluminium (Al)

6 0
2 years ago
In the reaction 2Li(s) + 2H2O(l) 2LiOH(aq) + H2(g), what compound is in the gaseous state?
ipn [44]
Answer is: C. H₂, molecule of hydrogen, g is c<span>hemistry abbreviations or physical state symbol for gas.</span>
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6 0
2 years ago
A waste collection tank can hold 18754 kg of methanol, which has a density of 0.788 g/cm3.
quester [9]
Given:
Mass of methanol, m = 18754 kg
Density of methanol, ρ = 0.788 g/cm³

By definition, the volume of methanol in the collection tank is
Volume  = mass/density
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Answer:  2.38 x 10⁷ g/cm³
3 0
2 years ago
A 5.00 L sample of helium expands to 12.0 L at which point the
mina [271]

Answer:

1.73 atm

Explanation:

Given data:

Initial volume of helium = 5.00 L

Final volume of helium = 12.0 L

Final pressure = 0.720 atm

Initial pressure = ?

Solution:

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

P₁ × 5.00 L = 0.720 atm × 12.0 L

P₁ = 8.64 atm. L/5 L

P₁ = 1.73 atm

7 0
2 years ago
Which one of the following statements is correct?
adell [148]

Answer:

Tissues form organs, and organs form systems. Hope this helped!

Explanation:

7 0
2 years ago
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