Answer:
Explanation:
The measure of R is always the same, but the numbers may differ depending on the units you use.
For example, in SI units, R = 8.314 Pa·m³K⁻¹mol
If your measurement uses different units, you must either convert your units to SI or use a value of R consistent with your units.
If you use bars and litres, R = 0.083 14 bar·L·K⁻¹mol⁻¹.
If you use kilopascals and litres, R = 8.314 kPa·L·K⁻¹mol
If you use atmospheres and litres, R = 0.082 06 L·atm·K⁻¹mol⁻¹.
If you use Torr and cubic centimetres, R = 62 368 Torr·cm³ K⁻¹mol⁻¹.
The only units that don't change are "K⁻¹mol⁻¹".
Answer:
Coordinate or r = (7,9).
Explanation:
Data obtained from the question include the following:
Mid point = (8,7)
Coordinate of S = (9,5)
Coordinate of r =...?
We shall determine the coordinate of r as follow:
Let the coordinate of r be (x2, y2)
Mid point = (x1 + x2)/2 , (y1 + y2)/2
Mid point = (8,7)
Coordinate of S = (9,5)
x1 = 9
y1 = 5
x2 =?
y2 =?
The value of x2 can be obtained as follow:
8 = (x1 + x2)/2
8 = (9 + x2)/2
Cross multiply
9 + x2 = 2 × 8
9 + x2 = 16
Collect like terms
x2 = 16 – 9
x2 = 7
The value of y2 can be obtained as follow:
5 = (y1 + y2)/2
7 = (5 + y2)/2
Cross multiply
5 + y2 = 2 × 7
5 + y2 = 14
Collect like terms
y2 = 14 – 5
y2 = 9
Coordinate of r = (x2, y2)
Coordinate or r = (7,9)
Answer: 0.0047mol
Explanation:Please see attachment for explanation
Answer:
132g/mol
Explanation:
The problem here is to find the molar mass of the compound in g/mol
To solve this problem, we simply sum the atomic masses of the atoms in the compound:
(NH₄)₂ SO₄:
Atomic mass of N = 14g
Atomic mass of H = 1g
Atomic mass of S = 32g
Atomic mass of O = 16g
So;
Molar mass = 2[(14 + 4(1))] + 32 + 4(16) = 132g/mol
Answer:
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