Answer is:
1) lubricant - 500 ppm by weight.
2) moisture - 50 ppm by weight.
3) non-condensable gases (air) - 150 ppm by weight.
Standard J2099 specific the maximum levels of contaminants for R134a.
ppm<span> (parts-per-million, </span>10⁻⁶) is <span>value that represents the part of a whole number in units of 1/1000000.</span>
Answer: Option A) 25mL
Explanation:
Given that,
Original volume of gas (V1) = 75mL
Original temperature of gas (T1) = 450K
New volume V2 = ?
New temperature T2 = 150K
Since volume and temperature are given while pressure is held constant, apply the formula for Charle's law
V1/T1 = V2/T2
75mL/450K = V2/150K
To get the value of T2, cross multiply
75mL x 150K = 450K x V2
11250mL•K = 450K•V2
Divide both sides by 450K
11250mL•K / 450K = 450K•V2/450K
25mL = V2
Thus, the new volume of the gas is 25mL
Answer:
0.72
Explanation:
if 760=1
550=x
=550÷760= 0.72 in two s.f
Answer:
Sorry for the late answer, but it should be A. Carbon's outermost shell can form up to 4 covalent bonds. It's one of the reasons why Carbon is considered an "essential element".
Answer:
The density of tin is 7.31 g/cm³.
Explanation:
Given that the formula of density is D = m/v where m represents mass and v is volume :
D = 16.52/2.26
D = 7.31 g/cm³ (3sf)
