You are given an unknown liquid that has a density of 0.98 g/mL. It's volume is 39.63 mL. What is the mass of the unknown liquid?
Answers
Answer:
38.8 g
Explanation:
Density is just mass divided by volume, so if you know 2 of those 3 things you can solve for the other one.
Let's write it as: D = m/v
We know D, and we know v, so solve for m:
m = Dv
Now just plug in the the known values:
m = (0.98 g/ml)( 39.63 ml) = 38.8 g
(Notice how ml cancelled out, leaving grams, which is what we wanted for mass.)
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the gas left in a ussd aerosol can is at a pressure of 103kPa at 25.0 °C. if the can heats up to 50.0°C what is the pressure of gas inside the can assuming the volume of the can is constant
Desvribe all lab equipment that can be used to accurately measure the volume of a liquid
Answers
T₁ = 210.0ºC + 273 = 483 K
V₂ = ?
T₂ = - 23.0ºC + 273 = 250 K
V₁/ T₁ = V₂ / T₂
8.00 / 483 = V₂ / 250
483 x V₂ = 8.00 x 250
483 V₂ = 2000
V₂ = 2000 / 483
V₂ = 4.14 L
hope this helps!
c. Materials that only transfer thermal energy
b. Materials that transfer energy with no resistance
d. Materials that convert thermal energy into potential energy User: ______ is/are usually the best conductor/s.
a. Metals
c. Air
b. Water
d. Minerals
Answers
Superconductivity is a phenomenon characterized by zero electrical resistance at below critical temperatures. Metals are the best conductors because the molecules inside them are tightly packed, which allows electricity to travel efficiently.
Water is also a good conductor because of the ions and minerals in it. However, water itself is not a conductor of electricity.
The answer would be B
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Ca3(PO4)2
Answers
There will be two atoms of phosphorus in the 1.75 mol of calcium phosphate.
What are atoms?
Atoms are the smallest unit of matter. In a chemical reaction, the number of atoms shows the quantity of an element in the compound or reaction. Phosphorus is a chemical element that is preset in the periodic table.
In calcium phosphate, Ca3(PO4)2, the number of atoms can be calculated by counting the number of moles that is given in the equation.
The number of atoms of calcium is 3, and the number of phosphorus atoms is 2.
Now given the 1.75 mol of calcium phosphate, so the number of atoms of phosphorus will be the same in any number of moles of calcium phosphate. So there will be 2 atoms of phosphorus in the given equation.
Thus, the number of atoms is two.
To learn more about atoms, refer to the below link:
#SPJ2
Answer:
It has 2 phosphorus atoms in 1 mol
so for 1.75 mol =2×1.75
Explanation:
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B. number of electrons already present in the atom.
C. number of neutrons in the nucleus of the atom.
D. availability of an unfilled orbital in the atom.
Answers
This is true because the atoms will try to complete the octete (8 electrons in the last p level)
Answers
Answer: The balloon will not survive.
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,
where,
= initial pressure of gas = 1 atm
= final pressure of gas = 0.05 atm
= initial volume of gas = 4.0 L
= final volume of gas = ?
= initial temperature of gas =
= final temperature of gas =
Now put all the given values in the above equation, we get:
As the balloon has the capacity to expand to a 50 liter volume before bursting, it can not survive as it occupies volume higher than 50 L
Answers
Here's your asnwer.
50
Answer:
posible mente es una equivocacion porque dijo que estaban refriados y les dió una medicina para la tos