Answer:
The ratios arranged in ascending order are; The ratio of the mass of Y to X in XY2 divided by the mass of Y to X in XY, The ratio of the mass of Y to X in XY3 divided by the mass of Y to X in XY, The ratio of the mass of Y to X in XY4 divided by the mass of Y to X in XY
1) Mass ratio = 3
2) Mass ratio = 2
3) Mass ratio = 4
Explanation:
Comprehensive calculations are displayed in the attachment.
Answer:
The rate law for the decomposition reaction is:
The unit for the rate constant will be
Explanation:
The rate law can be expressed as:
..[1]
When the drug concentration is tripled, the decomposition rate rises by a factor of nine.
...[2]
[1] ÷ [2]
Solving for x results in:
x = 2.
This indicates a second-order reaction.
The decomposition reaction's rate law is:
The unit for the rate constant will be:
The unit for the rate constant will be .
Answer:
The correct options include choice 2, 3, and 6.
Explanation:
Density is identified as the mass of a substance per unit volume occupied by that substance.
The density remains constant for a given substance, regardless of variations in mass and volume hence it is considered an intensive property.
2. 20.2 g of silver in 21.6 mL of water and 12.0 g of silver also in 21.6 mL of water.
3. 15.2 g of copper in 21.6 mL of water and 50.0 g of copper in 23.4 mL of water.
6. 11.2 g of gold in 21.6 mL of water and 14.9 g of gold in 23.4 mL of water.
The same metals in both instances will yield consistent densities due to the fixed density of the metal.
Answer:
The empirical formula is =
The Valproic acid formula is =
Explanation:
Mass of the produced water = 0.166 g
Molar mass of water = 18 g/mol
The moles of are calculated as 0.166 g /18 g/mol = 0.00922 moles.
In 1 mole of water, there are 2 moles of hydrogen atoms.
Thus,
Moles of H = 2 x 0.00922 = 0.01844 moles
Each hydrogen atom's molar mass is 1.008 g/mol.
Hydrogen mass in the molecule = 0.01844 x 1.008 = 0.018588 g
Mass of produced carbon dioxide = 0.403 g
Molar mass of carbon dioxide = 44.01 g/mol
The moles of are calculated as 0.403 g /44.01 g/mol = 0.009157 moles.
Each carbon atom's presence is 1 mole in 1 mole of carbon dioxide.
So,
Moles of C = 0.009157 moles
The molar mass of carbon is 12.0107 g/mol.
Carbon mass in molecule = 0.009157 x 12.0107 = 0.11 g
Since Valproic acid comprises only hydrogen, oxygen, and carbon, the oxygen mass in the sample = Total mass - Carbon mass - Hydrogen mass.
The sample's overall mass = 0.165 g.
Oxygen mass in the sample = 0.165 - 0.11 - 0.018588 = 0.036412 g
The molar mass of oxygen is 15.999 g/mol.
Moles of O = 0.036412 / 15.999 = 0.002276 moles
Taking the simplest ratio for H, O, and C yields:
0.01844: 0.002276: 0.009157
= 8: 1: 4
The empirical formula becomes
While molecular formulas detail the precise count of atoms for each element, empirical formulas represent the simplest form or reduced ratio of these elements in the compound.
Consequently,
The molecular mass equals n × Empirical mass.
Here, n is a positive integer from 1, 2, 3...
Empirical mass = 4×12 + 8×1 + 16 = 72 g/mol.
Molar mass = 144 g/mol.
Thus,
The molecular mass = n × Empirical mass.
144 = n × 72
⇒ n = 2
The Valproic acid formula is =
Answer:
The vehicle travels 660 feet
Explanation:
Initially, convert the speed into Feet per second
The car's speed is 90 mi/hr
1 mi = 5280 ft
For 90 miles, we calculate 90 x 5280 = 475,200 feet
1 hour = 60 minutes
1 minute = 60 seconds
Therefore,
1 hour = 60 x 60 seconds = 3600 seconds
Speed is defined as the distance covered by an object over time. The speed formula is:
... given
Speed = 132 ft/sec
Thus, time = 5 seconds
Distance = 660 feet