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
frez [133]
3 years ago
5

In the formula 5CaSO4 the total number of sulfur atoms present is a. 1. b. 5. c. 9. d. 20?

Chemistry
2 answers:
Ierofanga [76]3 years ago
5 0

Answer:

b. 5

Explanation:

The name of the compound above is calcium tetraoxosulphate . The coefficient is 5 means the compound exist as 5 moles. It simply means 5 moles of CaSO4. The natural chemical formula has 1 atom of calcium, 1 atom of sulfur and 4 atom of oxygen.

Since the compound according to the formula exist in 5 mole. The number of atom of Calcium is 1 × 5 = 5 atoms, Sulfur = 1 × 5 = 5 atoms and oxygen = 4 × 5 = 20 atoms.

The total number of atoms of sulfur in the Formula, 5CaSO4 (Calcium sulphate) is 5 atoms.

podryga [215]3 years ago
4 0
The answer is b . (1*5=5)
You might be interested in
Calculate the molar mass of the acid.
JulijaS [17]
Citric acid has the molecular formula C6H8O7 so you can add the molar masses of the elements from the periodic table. C has a molar mass of 12.01 g/mol, H has 1.01 g/mol and O has 15.999 g/mol. Now you calculate the total molar mass= (6*12.01 + 8*1.01 + 7*15.999). This yields a molar weight of 192.124 g/mol (anhydrous)
3 0
3 years ago
A ------------ ----------------- is the dying out of a large number of species on a global scale
ziro4ka [17]

Answer:

Extinction event or sometimes known as Mass extinction

Explanation:

These events typically are typically widespread and rapid decrease in the biodiversity (which takes into account spread and existence of current species). The worst mass extinction was Permian–Triassic extinction where over 90% of species of organisms vanished.

5 0
3 years ago
Which of the following rules should you follow to balance chemical equations?
Firdavs [7]

Answer:

c. add coefficients as needed

Explanation:

A chemical equation is defined as the equation that shows changes in a chemical reaction. A chemical equation consist of reactant and product, reactant is at left side of the arrow and product is at right side of the arrow.

Reactant => Product

While balancing a chemical equation, the basic rule is to balance the coefficient as required. Coefficient represents the number of molecules and is used at front of a chemical symbol. Change in coefficient helps balance the number of atoms or molecules of the substances on both the sides of the arrow.

Subscripts are never allowed to change because it can change the chemical involved in the reaction.

Hence, the correct answer is "c. add coefficients as needed".

3 0
2 years ago
What was the key design change for hfc-134a a/c systems versus CFC 12 a/c systems
BabaBlast [244]
Answer is: key design change for HFC-134a A/C systems versus CFC-12 A/C systems was quick couple service fitting and that design reduce venting and mixing of refrigerants during service.

<span> Level of contamination is also reduced and the emission of refrigerants and greenhouse gases (sulfur dioxide, carbon dioxide) is also reduced.</span>

6 0
3 years ago
Which two notations represent isotopes of the same element
Mumz [18]
The two notations that represent isotopes of the same element is the one that represented in option 1
The lower number is the number of protons while the upper number is the atomic weight

hope this helps
6 0
3 years ago
Read 2 more answers
Other questions:
  • Explain the roles of products, reactants, and limiting reactant in a chemical reaction.
    13·1 answer
  • 4. Which of the following aromatic compounds undergoes nitration faster than benzene does? Explain your answer
    8·1 answer
  • What is the attractive force that occurs between the sun and the earth called? friction magnetism weight gravity
    6·2 answers
  • PLEASE HELP ME!!!!!!!!!!!!
    5·1 answer
  • A type of erosion that occurs when large chunks of land or rock break away due to gravity.
    12·2 answers
  • What is the percent yield of ferrous sulfide if the actual yield is 220.0 g and the theoretical yield is 275.6 g
    13·2 answers
  • Which of the following describes redox in displacement plating?
    8·1 answer
  • What does it mean when it asks for the planet’s composition?
    10·2 answers
  • Which of the following statements is true?
    10·1 answer
  • What is the correct formula of a compound that has ten oxygen atoms and four phosporus atoms?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!