Answer:
C
Explanation:
because it gives a cause he didn´t do his work and the effect is that he got a bad grade
The state government and federal government
Answer:
Cold adjectives: Chilly, cool, bone-chilling, frigid
Rain adjectives: Mist, downpour, .cold
Explanation:
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Answer:
must usExplanation:This question refers to the study of gases. To solve it, initially we e the following expression:
P × V = n × R × T
where P is the pressure (Pa), V is the volume (m³), n is the number of moles in the sample, R is the universal gas constant and T is the temperature (K). Transforming the units according to the equation, we have:
P = 2 × 10 ^ 5 Pa
V = 8/1000 = 0.008 m³
T = 27 + 273 = 300 K
Substituting in the equation, we have:
2 × 10 ^ 5 × 0.008 = n × 8.0 × 300
n = 0.667 moles
Finally, we use the following expression, which relates number of moles and sample mass:
m = M × n
where m is the mass (g) and M is the molar mass (g / mol). Thus, the mass of this gas is:
m = 28 × 0.667
m = 18.67 g
