The use of a three-column cash book is determine by?
Cash discounts
Trade discounts
Cash transactions
Bank transactions
Correct answer is A
No explanation has been provided for this answer.
54.0g
27.0g
13.5g
108.0gQ
Correct answer is A
Recall that
mass deposited = \(\frac{MmIt}{96500n}\)
Mm =108, t = 4830s
I = 10A, n = 1
m = 108 × 10 × (\(\frac{4830}{96500}\)) × 1
m = 54.0g
The shape of ammonia molecules is
trigonal planar
octahedral
square planar
tetrahedral
Correct answer is A
Ammonia = NH3
It has three bonds of hydrogen to the Nitrogen.
\(^{226}_{88}Ra\) → \(^x_{86}Rn\) + alpha particle
226
220
227
222
Correct answer is D
\(^{226}_{88}Ra\) → \(^x_{86}Rn\) + \(^4_{2}He\)
\(^4_{2}He\) = alpha particle
considering the summation of the mass number
226 = x + 4
x = 226 - 4
x = 222
The ideal gas laws and equations are true for all gases at
low pressures and lower temperatures
low temperatures and high pressures
high pressures and high temperatures
low pressure and high temperatures
Correct answer is D
At high temperature and low pressure, the vanderwaal equation is reduced to ideal gas equation.
i.e, [P + \(\frac{a}{v^2}\)] [v - b] = RT is reduced to PV = nRT
Generally, a gas behaves more like an ideal gas at higher temperature and lower pressure as the potential energy due to intermolecular forces, it becomes less significant compared with the particles kinetic energy and the size of the molecules, then it becomes less significant compared to the empty space between them.