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Dima020 [189]
3 years ago
11

Discuss why it is not necessary to know exactly how much salt was added to the water in making the salt solution to just float t

he egg?
Chemistry
1 answer:
valina [46]3 years ago
5 0

Answer and Explanation:

It is not necessary to know the amount of salt in the aqua, because we know that the presence of salt in the water will increase its density.

In this case, salt increases the mass of the water, without increasing the volume of water. as the egg will not change in volume or water, we know that the density of the egg will be constant, while the change in the mass of the water with the addition of salt, will change the density of the water which will increase progressively until it becomes denser than the egg and, consequently, it will not let the egg sink.

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How many moles of H2O are produced form 2.11 mole of oxygen?
aivan3 [116]

Answer:

4.22 mol H₂O

Explanation:

Step 1: Write the equation for the synthesis of water

2 H₂ + O₂ ⇒ 2 H₂O

Step 2: Establish the appropriate molar ratio

According to the balanced equation, the molar ratio of O₂ to H₂O is 1:2.

Step 3: Calculate the moles of water produced from 2.11 moles of oxygen

We will use the previously established molar ratio.

2.11 mol O₂ × 2 mol H₂O/1 mol O₂ = 4.22 mol H₂O

4 0
3 years ago
What is the speed of sound in air if its temperature is 9°c
IgorLugansk [536]
Below are some conversions.

336.715 m/s
1212.175 km/h
753.206 mph
1104.709 ft/s
654.08 knots

Try using this website:

www.sengpielaudio.com/calculator-speedsound.htm

5 0
4 years ago
What does that number of protons tell you
bogdanovich [222]
The number of protons tells you which element the atom is. The number of protons is the element number (Hydrogen - 1, Helium - 2, etc.).
5 0
3 years ago
4
Archy [21]

Answer:

Pressure

Explanation:

The variable that describes how often the particles in a sample of gas collides with each other and the walls of the container is the pressure.

The pressure of a gas is the combined force with which the gas molecules bombard a unit area of the wall of the container i.e the sum of all the tiny pushes on the unit area of the wall of the container.

The various units of gas pressure atmosphere, millimeters of Hg, torr, pascal, newton per meter squared.

  • Temperature is the degree of hotness or coldness of a body
  • Volume is the space the gases occupies.
3 0
3 years ago
Find the mass of 3.90*10^23 molecules of carbon dioxide
enyata [817]

Answer: 28.5 g

Explanation:

1 mole of every substance contains Avogadro's number of particles and weighs same as it's molecular weight.

Here 1 mole of CO_2 contains 6.023\times 10^{23} molecules of CO_2 and it weighs 44g

6.023\times 10^{23} molecules weigh 44g

3.90\times 10^{23} molecules weigh = \frac{44g}{6.023\times 10^{23}}\times 3.90\times 10^{23}

                                                          = 28.5g


7 0
4 years ago
Read 2 more answers
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