The answers are as follows,
1. 4.71 L,
2. 3.29 L,
3. 1634.6 torr
<u>Explanation:</u>
All the above problems can be sorted out using the Boyle's law represents the relationship between the volume and pressure.
It can be expressed as follows,
P1V1 = P2V2
Rearranging the above expression, we get,
1) The first case can be solved as,
2) The second case can be solved as,
3) The third case can be solved as,
Thus the answers for all the three cases are found as,
1. 4.71 L,
2. 3.29 L,
3. 1634.6 torr respectively
Limiting reagent is I2O5
yield of I2 is 45.86g
Answer:
50.63 cm³
Explanation:
Using Charles law equation as follows:
V1/T1 = V2/T2
Where;
V1 = initial volume (cm³)
V2 = final volume (cm³)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the question, V1 = 45.0 cm³, V2 = ?, T1 = 280 K, T2 = 315 K
Using; V1/T1 = V2/T2
45/280 = V2/315
Cross multiply
45 × 315 = 280 × V2
14175 = 280V2
V2 = 14175 ÷ 280
V2 = 50.625
V2 = 50.63 cm³
<u>Answer:</u> The mass of water produced is 507.6 g
<u>Explanation:</u>
The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:
......(1)
Given mass of glucose = 846 g
Molar mass of glucose = 180 g/mol
Plugging values in equation 1:
The given chemical equation follows:
By the stoichiometry of the reaction:
If 1 mole of glucose produces 6 moles of water
So, 4.7 moles of glucose will produce = of water
Molar mass of water = 18 g/mol
Plugging values in equation 1:
Hence, the mass of water produced is 507.6 g
You have to use this knwoledge:
1) The superscript number on the left of the symbol is the mass number (A)
2) The underscript number on the left of the symbol is the atomic number (Z)
3) The atomic number, Z, is the number of protons of the atom.
4) The number of electrons of an atoms is equal to the number of protons.
5) The mass number, A is equal to the number of neutrons, N, plus the number of protons, Z, i.e. A = N + Z, from which you obtain N = A - Z
Now I am going to apply above rules to solve the three cases for you.
I will use other notation just because the editor does not permit to place superscripts and underscripts on the left of the symbol.
a) 62 Cu 29 and 62 Zn 39
62 Cu 29:
Z = 29 = number of protons
A = 62 = N + Z => N = 62 - Z = 62 - 29 = 33
Number of electrons = number of protons = 29
62 Zn 39:
Z = 39 = number of protons
A = 62 = N + Z => N = 62 - Z = 62 - 39 = 23
Number of electrons = number of protons = 39
Answers:
protons are not equal
neutrons are not equal
electrons are not equal.
b) 40Ar18 and 41K19
40Ar18:
Z = 18 = number of protons
A = 40 = N + Z => N = 40 - 18 = 22 = number of neutrons
number of electrons = number of protons 18
41K19:
Z = 19 = number of protons
A = 41 = N + Z> N = 41 - 19 = 22
number of electrons = number of protons = 19
Answers:
protons are not equal
neutrons are equal
electrons are not equal
c) 14N7 and 15N7
14N7:
Z = 7 = number of protons
A = 14 => N = 14 - 7 = 7 = number of neutrons
number of elecfrons = number of protons = 7
15N7:
Z = 7 = number of protons
A = 15 => N = 15 - 7 = 8 = number of neutrons
number of electrons = number of protons = 7
Answers:
protons are equal
neutrons are not equal
electrons are equal