1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zhuklara [117]
3 years ago
9

Which of these contains information about the elements

Chemistry
1 answer:
Monica [59]3 years ago
7 0
Post the question so we can help
You might be interested in
Determine the number of atoms that are in 1.15 mol of Cl 2.
Brums [2.3K]

Answer:

Explanation: I think its 4.91 x 10^25. Im not very sure, i just multipled 1.15 mol by the molar mass of Cl 2, which was 70.9 g. Then I multiplied that by avogadro's number. sorry if im wrong

4 0
3 years ago
If you pump air into cycle tyre a slight warming effect is noticed at valve stem why
SSSSS [86.1K]
Probably the kinetic energy of rubbing the pump against the valve, combined with the increase in gas pressure in the tire itself.
8 0
3 years ago
A cylinder of argon contains 50 L of Ar at 12.4 atm and 127°C . How many moles of argon are in the cylinder
joja [24]

Answer:

18.9 moles

Explanation:

We have the following data:

V = 50 L

P = 12.4 atm

T= 127°C + 273 = 400 K

R = 0.082 L.atm/K.mol (it is the gas constant)

We use the ideal gas equation to calculate the number of moles n of the gas:

PV = nRT

⇒ n = PV/RT = (12.4 atm x 50 L)/(0.082 L.atm/K.mol x 400 K) = 18.9 mol

6 0
3 years ago
Which component is soluble in water
Vesna [10]

Answer:

salt

Explanation:

6 0
3 years ago
What is the molarity of a solution that contains 122g of MgSO4 n 3.5L of solution?​
tatiyna

Answer:

0.29mol/L or 0.29moldm⁻³

Explanation:

Given parameters:

Mass of MgSO₄ = 122g

Volume of solution = 3.5L

Molarity is simply the concentration of substances in a solution.

Molarity = number of moles/ Volume

>>>>To calculate the Molarity of MgSO₄ we find the number of moles using the mass of MgSO₄ given.

Number of moles = mass/ molar mass

Molar mass of MgSO₄:

Atomic masses: Mg = 24g

S = 32g

O = 16g

Molar mass of MgSO₄ = [24 + 32 + (16x4)]g/mol

= (24 + 32 + 64)g/mol

= 120g/mol

Number of moles = 122/120 = 1.02mol

>>>> From the given number of moles we can evaluate the Molarity using this equation:

Molarity = number of moles/ Volume

Molarity of MgSO₄ = 1.02mol/3.5L

= 0.29mol/L

IL = 1dm³

The Molarity of MgSO₄ = 0.29moldm⁻³

6 0
3 years ago
Other questions:
  • Some car batteries give off a potentially explosive mixture of gases. What kind of change is taking place in the battery?
    9·1 answer
  • i. Give two differences between a physical change and a chemical change. ii. Explain whether condensation of water vapor is a ph
    10·2 answers
  • An aqueous 0.300 M glucose solution is prepared with a total volume of 0.150 L. The molecular weight of
    7·1 answer
  • Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by
    13·1 answer
  • What must happen to uranium before it can be used as a fuel source?
    5·1 answer
  • Which statement is correct about the rate of a chemical reaction? (5 points)
    8·1 answer
  • The electron configuration of an element is 1s2 2s2. How many valence electrons does the element have?
    12·1 answer
  • Question 6
    12·1 answer
  • Can bacteria reproduce
    15·1 answer
  • Find concentration of solution of 45g of glucose is dissolved in water to prepare 500g solution?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!