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
jolli1 [7]
3 years ago
12

Scientists in 1.legal services 2.research and development 3.marketing 4.corporate management

Chemistry
1 answer:
Maslowich3 years ago
4 0

2. research and development

You might be interested in
A sample of limestone (calcium carbonate, CaCO3) is heated at 950 K until it is completely converted to calcium oxide (CaO) and
pav-90 [236]

Answer:

Therefore, volume of CO₂ produced in the first step is 9141.404 L

Explanation:

Equations of reactions:

A: CaCO₃(s) ---> CaO(s) + CO₂(g)

B: CaO(l) + H₂O(l) ---> Ca(OH)₂(s)

Molar mass of CaCO₃ = 100 g; molar mass of CaO = 56 g; molar mass of CO₂ = 44 g molar mass of H₂P = 18 g; molar mass of Ca(OH)₂ = 74 g

From equation B, 1 mole of CaO produces 1 mole of Ca(OH)₂

This means that 56 g of CaO produces 74 g of Ca(OH)₂

mass of CaO that produces 8.47 kg or 8470 g of Ca(OH)₂ = 8470 g * 56/74 = 6409.73 g of CaO

Therefore, 6409.73 g of CaO were produced in reaction A

From reaction A, 1 mole of CaCO₃ produces 1 mole CaO and 1 mole of CO₂

Number of moles of CaO in 6409.73 g = 6409.73 g/56 g/mol = 114.46 moles

Therefore, 114.46 moles of CO₂ were produces as well.

Molar volume of gas at STP = 22.4 litres

Volume of CO₂ produced at STP = 114.46 * 22.4 L =2563.904 L

However, the above reaction took place at 950 K and 0.976 atm, therefore volume of CO₂ produced under these conditions are obtained using the general gas equation

Using P₁V₁/T₁ = P₂V₂/T₂

P₁ = 1.0 atm, V₁ = 2563.904 L, T₁ = 273 K, P₂ = 0.976 atm, T₂ = 950 K, V₂ = ?

V₂ = P₁V₁T₂/P₂T₁

V₂ = (1.0 * 2563.904 * 950)/(0.976 * 273)

V₂ = 9141.404 L

Therefore, volume of CO₂ produced in the first step is 9141.404 L

3 0
2 years ago
According to Newton’s first law of morion when will an object at rest begin to move?
Sati [7]

Hello There!

According to "Newton's First Law" an object at rest will begin to move when it is acted upon an unbalanced force.

Have A Great Day!

Thanks For Using Brainly!

6 0
3 years ago
An experiment was designed to test the hypothesis that peanuts have more energy than a chip. The experiment determines calorimet
Svet_ta [14]

Answer:

b Different amounts of food samples were used.

Explanation:

The mass of the two samples needs to be the same in order for the test to be accurate.

4 0
1 year ago
A reaction was performed, and the dichloromethane solvent was dried by adding magnesium sulfate drying agent. When the reaction
Degger [83]
Jdjdjxjjznbxyhzkaishsbzn
Kzksjdjjdidiididjdjdjj
Sksk
7 0
3 years ago
35 Given the word equation:
Fantom [35]
When the reactant is single compound before the reaction and become more than single compound after reaction is called decomposition reaction
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is false regarding supersonic speed?
    10·1 answer
  • Write the chemical equations showing how a buffer containing nh4cl and nh3 would neutralize added hcl and naoh (two equations).
    13·1 answer
  • After creating a Beer's Law plot using standard solutions of Q, you determined the slope of Beer's Law to be 0.543 M-1. Your unk
    12·1 answer
  • The answer to this question
    12·1 answer
  • What is the pH of 5.0 L of an aqueous solution that contains 1.0 grams of HBr and 1.0 grams of nitric acid
    8·1 answer
  • Abiotic factors in an environment include A) producers. B) decomposers. C) predators and prey. D) sunlight and water. Abiotic fa
    13·1 answer
  • Which pair of factors affects the force of gravity between objects
    11·2 answers
  • How many molecules of oxygen are in 3.0 moles of oxygen?
    13·2 answers
  • Europium orbital diagram
    14·1 answer
  • Hi my friends here I am to say that in exam I got 1st rank so thanks effort of your my friends
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!