Answer:
True
Explanation:
Yes this statement is true.
In a physical change, some of the physical properties of the substance may be altered and the chemical composition remains the same.
Which force prevents protons from repelling each other inside a nucleus?
the gravitational force
the weak nuclear force
the electromagnetic force
<u>the strong nuclear force</u>
Answer:
22.94 L.
Explanation:
We can use the general law of ideal gas: PV = nRT.
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
If n and T are constant, and have two different values of V and P:
P₁V₁ = P₂V₂
P₁ = 367.0 mm Hg, V₁ = 49.0 L.
P₂ = 784.0 mm Hg, V₂ = ??? L.
∴ V₂ = P₁V₁/P₂ = (367.0 mm Hg)(49.0 L)/(784.0 mm Hg) = 22.94 L.
Answer:
V₂ = 112.14 mL
Explanation:
Given data:
Initial volume = 500 mL
Initial pressure = 270 mmHg (270/760 =0.355 atm)
Initial temperature = 55 °C (55 +273 = 328 K)
Final temperature = 100°C (100+273 = 373 K)
Final volume = ?
Final pressure = 1.8 atm
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 0.355 atm × 500mL × 373 K / 328 K × 1.8 atm
V₂ = 66207.5 atm .mL. K / 590.4 K.atm
V₂ = 112.14 mL
3.19 x 10³
Explanation:
The exponential format of the a figure is used to simplify the expression of big numbers to make them easier to work with.
The number is simply raised to the power of tens.
3,186
This is number three thousand one hundred and eighty six
The highest number here is a thousand
A thousand is 10³
So we simply take the rest of the values and express it this way;
3.186 x 10³ or 3.19 x 10³ on rounding up
learn more:
Exponents brainly.com/question/4934417
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