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
forsale [732]
3 years ago
14

"how many grams of calcium are consumed when 156.8 ml of oxygen"

Chemistry
1 answer:
Akimi4 [234]3 years ago
3 0
Your question is incomplete. However, I found a similar problem fromanother website as shown in the attached picture.

To solve this problem, you must know that at STP, the volume for any gas is 22.4 L/mol. So,

Moles O₂: 156.8 mL * 1 L/1000 mL* 1 mol/22.4 L = 0.007 moles
Mass calcium: 0.007 mol O₂ * 2 mol Ca/1 mol O₂ * 40 g/mol Ca =<em> 0.56 g Ca</em>

You might be interested in
Identify the arrows that show removal of thermal energy when matter changes state.
8090 [49]
Let's identify first the phases of matter inside each of those beakers. The first beaker on the left has a compact shape and has its own volume. So, that must be solid. The middle beaker has a compact shape but it takes the shape of its container. So, that must be liquid. The third beaker on the right is gas because the molecules are far away from each other.

After identifying each states, let's investigate the energy for phase change. Let's start with the arrows pointing to the right. The first arrow to the right is a phase change from solid to liquid. The intermolecular forces in a solid is the strongest among the three phases of matter. So, you would need an input of energy to break them apart into liquid. The same is true for the phase change from liquid to gas. Therefore, all the arrows pointing to the right require an input of energy.

The reverse arrows pointing to the left needs to release energy. The molecules in the gas state are free such that they can travel from one point to another easily. They have the highest amount of energy. So, if you want the molecules to come closer together, you need to remove the energy to keep them in place. Therefore, the arrows pointing to the right require removal of energy.
7 0
3 years ago
Read 2 more answers
Isobutylene is a hydrocarbon used in the manufacture of synthetic rubber. when 0.847 g of isobutylene was subjected to combustio
Firlakuza [10]
Find the mass of C in the 2.657 g CO2:
(2.657 g CO2) / (44.01 g/mol) = 0.06037 mol CO2
Since each mole of CO2 also has 1 mole of C, this is equivalent to 0.06037 mol C.

Find the mass of H in the 1.089 g H2O:
(1.089 g H2O) / (18.02 g/mol) = 0.06043 mol H2O
Since 1 mol H2O has 2 mol H, this is equivalent to (0.06043)*2 = 0.1209 mol H.

Taking the ratio of H to C: 0.1209 / 0.06037 = 2.002 ~ 2
Therefore, the empirical formula of isobutylene is CH2.
6 0
3 years ago
The ionic mobility of alkali metal ions in aqueous<br>solution is maximum for​
matrenka [14]

Answer:

Rb+

hope it's right:)

..................................

8 0
3 years ago
Question 7 of 15
Crazy boy [7]

Answer: 0.4 moles

Explanation:

Given that:

Volume of gas V = 11L

(since 1 liter = 1dm3

11L = 11dm3)

Temperature T = 25°C

Convert Celsius to Kelvin

(25°C + 273 = 298K)

Pressure P = 0.868 atm

Number of moles N = ?

Note that Molar gas constant R is a constant with a value of 0.00821 atm dm3 K-1 mol-1

Then, apply ideal gas equation

pV = nRT

0.868atm x 11dm3 = n x (0.00821 atm dm3 K-1 mol-1 x 298K)

9.548 atm dm3 = n x 24.47atm dm3mol-1

n = (9.548 atm dm3 / 24.47atm dm3 mol-1)

n = 0.4 moles

Thus, there are 0.4 moles of the gas.

3 0
3 years ago
What is the mass of 6.02 x 1023 particles of rubidium carbonate
Firdavs [7]

Answer:

Explanation:

84.97

4 0
3 years ago
Other questions:
  • Match the atoms which might substitute for one another. Match the items in the left column to the items in the right column.
    8·2 answers
  • What are some physical properties of metals?
    15·2 answers
  • Which substance in the reaction below either appears or disappears the fastest? 4NH3 + 7O2 → 4NO2 + 6H2O Which substance in the
    12·1 answer
  • What is a claim?
    12·2 answers
  • The following chemical equation is not balanced: CaCl2 + AgNO3 AgCl + Ca(NO3)2 When this chemical equation is correctly balanced
    7·2 answers
  • A student performing this experiment weights out 0.6680 grams of an antacid tablet. It is was determined that this tablet contai
    8·1 answer
  • How many moles of KOH are measured in thisexperiment? See the volume and molarity information given. 2.How many moles of KOH rea
    7·1 answer
  • A) what is hydrogen's carrying capacity? <br> b) what is lithium’s carrying capacity?
    6·1 answer
  • What is the volume of a 25 g object with a density of 9.1 g/mL? please help me​
    6·1 answer
  • A 2.00 L flask is filled with propane gas (C3H8) at a pressure of 1.10 atm and a temperature of 258 K. What is the mass of propa
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!