Answer:
D
Explanation:
I think it is d sorry if wrong hoped I helped
Because the solid is soluble in water, it cannot be calcium fluoride.
This leaves us with either silver fluoride or potassium bromide, as both are soluble in water.
Upon addition of sodium sulfate, a white precipitate forms, confirming that the substance was silver fluoride as the precipitate are of silver sulfate.
This is a strong acid but the actual value of the pH will depend on its strength.
Acids have a pH of less than 7.
Answer:
12 moles of propane.
Explanation:
From the question given above, the following data were obtained:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 127 °C
Number of mole (n) =?
Next, we shall convert 127 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
T(°C) = 127 °C
T(K) = 127 + 273
T(K) = 400 K
Finally, we shall determine the number of mole of propane gas in the container. This can be obtained as follow:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 400 K
Gas constant (R) = 8.314 L.KPa/Kmol
Number of mole (n) =?
PV = nRT
184.8 × 216 = n × 8.314 × 400
39916.8 = n × 3325.6
Divide both side by 3325.6
n = 39916.8 / 3325.6
n = 12 moles
Thus, 12 moles of propane is present in the cylinder
One important drawback of the use of hcfcs as a replacement for cfcs is that hcfcs are more potent greenhouse gases.
<h3>
What is hcfcs?</h3>
HCFCs is an acronym for hydrochlorofluorocarbons (HCFCs).
Thye are fully or partly halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), derived from alkane family.
<h3>What is cfcs?</h3>
CFCs is an acronym for Chlorofluorocarbons (CFCs), derived from alkane family like hydrochlorofluorocarbons.
<h3>Disadvantage of hcfcs over cfcs</h3>
One important drawback of the use of hcfcs as a replacement for cfcs is that hcfcs are more potent greenhouse gases.
Learn more about hcfcs and cfcs here: brainly.com/question/15885478
