Answer:
V = 22.36 L
Explanation:
Given data:
Mass of oxygen = 18.0 g
Temperature = 350 K
Pressure = 0.720 atm
Volume of gas = ?
Solution:
Number of moles of oxygen :
Number of moles = mass/molar mass
Number of moles = 18.0 g/ 32 g/mol
Number of moles = 0.56 mol
Volume of oxygen:
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
0.720 atm × V = 0.56 mol × 0.0821 atm.L/ mol.K × 350 K
V = 16.1 atm.L /0.720 atm
V = 22.36 L
When 100.0 mL of 1.000 M HCl is reacted with 100.0 mL of 1.000 M NH4OH, the solution’s temperature increases 7.01 °C. Calculate LaTeX: \DeltaΔHreaction in units of kJ/mol. The specific heat of the salt solution is 4.184 J/g-°C and the density is 1.010 g/mL.
Do not use units or labels in answer. Make sure answer has the correct sig figs.
Answer:
Explanation:
volume of solution = 100 + 100 = 200 mL
mass of reaction mixture = 200 x 1.010 = 202 g
specific heat of solution mixture = 4.184 J/g-°C
heat evolved = mass x specific heat x rise in temperature
= 202 x 4.184 x 7.01
= 5924.63 J
100 mL of 1 M HCl
= .1 L of 1M HCl will contain .1 mole of HCl
.1 mole reacts with .1 mole of NH₄OH to make 5924.63 J of heat
1 mole reacts with 1 mole of NH₄OH to make 59246.3 J of heat
heat of reaction = 59246.3 J / mol
= 59.246 kJ / mol
= 59.3 kJ / mol .
Write a complete balanced equation for: magnesium(s) + chloric acid (aq) ? + ?
What process that occurred in the Midwestern United States in the 1930s is now occurring in the Sahel region of Africa, south of the Sahara Desert?
Industrial pollution
Radioactive soil
Over fertilization of streams
Dust storms and desertification
Answer:
dust storms and desertification
Explanation:
Answer:
Dust storms and desertification
Explanation:
i need help with this
Answer: B
Explanation: Most of the time they form over oceans which bring cool and moist weather.
For a substance to change phases, the amount of internal energy must change. Water exists in three phases: liquid, solid (ice), and gas (water vapor) Which of the following lists the phases in order of increasing total energ/?
gas, liquid, solid
O solid, gas, liquid
o solid, liquid, gas
O liquid, gas, solid
Answer:
Solid, liquid, gas
Explanation:
add thermal energy to solid and it becomes liquid, add thermal energy to liquid it becomes gas
Name the following compounds
Answer:
What are the compounds
Explanation:
Answer:
Where is the picture?
Explanation:
equation for the oxidation of octane.
Answer:
I think its 2 C8H18 + 25 O2 = 18 H2O + 16 CO2
Im not sure!
Explanation:
The definition of is the study of quantitative relationships between the amounts of reactants and products.
a)chemical equations
b) stoichiometry
c) molar mass
d)coefficient
Answer:
b) stoichiometry
Explanation:
Stoichiometry is the study of quantitative relationships between the amounts of reactants and products.
The word is coined from two Greek words; stoicheon which means atom and metron which means measurement. It deals with chemical calculations based on the elementary particles of matter. Such calculations highlights the relationships between the composition or chemical reactions of matter and the mole.1. Which liquid sample is a pure substance?
Table 1: Boning point of the samples
Samples Temperature Observation while heating
Liquid A
Liquid B
2. Which soăc sample is a pure substance?
Scenario 1: Meiting point of the said samples
Samples Appearance Observation while melting
Solid
Solid B
The whole Activity , poem and paragraph is missing in the question.
Answer:
(1) Liquid A
(2) Solid A
Explanation:
Using this part of the given poem
Substances and mixtures behave differently,
During boiling and melting most especially
Boiling point of substance is fixed while mixture is not
Substance melts completely but mixture does not
The boiling point of the Pure substance remain fixed after reaching its boiling point this is shown by Liquid A
Solid A is melting completely so Solid A is a pure substance.