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azamat
3 years ago
6

What is the mass, in kg, of a 2.12-g piece of lead

Chemistry
1 answer:
Lunna [17]3 years ago
5 0

Answer:

0.00212 kgs

Explanation:

one gram is equal to 0.001 kilograms

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State why the salts in sports drinks are classified as electrolytes
viktelen [127]

Answer:

Explanation:

The salts in drinks help replenish the body's electrolytes lost in sweat. ... The salts in sports drinks help replenish the body's electrolytes lost in sweat. Sodium helps regulate the body's fluid balance and plays a role in muscle contraction, and potassium is also involved in muscle contraction

3 0
3 years ago
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a 15.0 L tank of gas is contained at a high pressure of 8.20*10^4. The tank is opened and the gas expands into an empty chamber
Nostrana [21]

Answer:

P_2=20.5

Explanation:

Assuming that temperature is constant

According to Boyle's Law, at constant temperature pressure is inversly proportional to the volume  and mathematically it can be expressed as:

P_1V_1 = P_2V_2..........1

P_1=8.2 \times 10^4

P_2=?

V_1=15L

V_2=6.00 \times 10^4L

from the first equation after putting all the value

we get,

P_2=20.5

8 0
3 years ago
*Physical science*PLEASE HELP ME
kondaur [170]

Answer:

The answer to your question is:

Explanation:

Mass number is the sum of protons and neutrons if an atom.

Protons and neutrons in the atom.  This is true is the definition of mass number.

Neutrons and electrons in the atom.  It's false, if we sum the number of neutrons and electrons, the result could be the same as the mass number but it's not the definition of mass number.

Protons in the atom.  Incorrect, if only consider protons that is atomic number not mass number.

Electrons in the atom. Incorrect, mass number doesn't consider electrons in its definition.

5 0
3 years ago
Please help me fast, I will give brainliest if correct!
GrogVix [38]

Answer:

C. 24 mol

Explanation:

To say it quickly, 6 moles of C3H8 times 4 moles of HCl is 24. 32 moles of Cl2 times 4/4 moles HCl is 32. Therefore 24 is the correct answer.

7 0
3 years ago
The reaction Ba(NO3)2(aq) + Na2SO4(aq) → 2NaNO3(aq) + BaSO4(s) goes to completion because a
olga55 [171]
Ba(NO₃)₂ + Na₂SO₄ → 2NaNO₃ + BaSO₄

The reaction goes to completion because it has the same amount of elements in the reactants and products.
4 0
3 years ago
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