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skelet666 [1.2K]
3 years ago
12

A decrease in the temperature of a contained liquid causes

Chemistry
1 answer:
aev [14]3 years ago
7 0
<span>A decrease in the temperature of a contained liquid causes a decrease in vapor pressure. The liquid absorbs the air as it expands when it is cooled and nearing freezing point, which leads to the decrease in vapor pressure. </span>
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8. What is the % weight of Nickel in Nickel Sulfamate (Ni(SO3NH2)2) ?​
uranmaximum [27]

Answer:

% weight of nickle = 24 %

Explanation:

molar mass of Nickel Sulfamate (Ni(SO₃NH₂)₂) = 250.87 g/mol

Solution

1st we write down the molar mass of Ni

molar mass of Ni = 59 g/mol

now we write down the number of moles of Ni in (Ni(SO₃NH₂)₂)

number of moles of Ni = 1 mol

Now we calculate the mass of nickle present in (Ni(SO₃NH₂)₂)

<em>         mass = moles × molar mass</em>

mass = 1 mol × 59 g/mol

mass = 59 g

now we calculate the % weight of nickle in (Ni(SO₃NH₂)₂)

<em>       % weight = (weight of element ÷ total weight) × 100</em>

% weight of nickle = (59 ÷ 250.87) × 100

% weight of nickle = 0.24 × 100

% weight of nickle = 24 %

7 0
3 years ago
What does a cell use for genetic material?
hoa [83]
DNA and rna!!!!! Hope it helps
5 0
2 years ago
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How can we tell the difference between gases like hydrogen, oxygen, and carbon dioxide cause they all look to same?
alexgriva [62]

Answer:

The critical chemical difference is that CO2 contains one atom of carbon and two atoms of oxygen, whilst CO has one carbon and one oxygen atom.

6 0
3 years ago
Which of the following statements does not describe a proton?
antiseptic1488 [7]

The statement a) it orbits around the nucleus of an atom. does not describe a proton.

  • Protons is known as nucleon and Is found in the nucleus. It doesn't revolve around nucleus of atom.In circular orbits, electrons move around the nucleus.
  • In his well-known gold foil experiment from 1911, Ernest Rutherford made the discovery of the atom's nucleus.
  • He came to the conclusion that the majority of an atom's volume was empty and that all of the positively charged particles in it were concentrated in a single core.
  • The mass of a proton is around 1835 times that of an electron.
  • The atomic number is the quantity of protons in an element's nucleus.
  • The mass of a proton is 1.6726219 × 10^-27 kilograms.

Proton is embedded inside the nucleus of atom along with neutron and electron revolve around the nucleus in fixed orbit.

Learn more about proton here: brainly.com/question/28023882

#SPJ9

7 0
2 years ago
in descriptive scientific investigations scientis often make observations to understand the interacting parts of a complex​
masya89 [10]

The answer is System.

When a scientific investigation is in progress, its used to perform and understand the natural phenomenon that goes on using the scientific method. Since this is a descriptive investigation, it provides a descriptive account of any system by looking at it without any prior knowledge to that subject. This method of investigation does not use a hypothesis. Thus, proves our answer correct.

Best of Luck!

3 0
4 years ago
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