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
sweet [91]
3 years ago
13

Why do we use conversion factors instead of just multiplying or dividing as needed? What’s the advantage?

Chemistry
1 answer:
Scrat [10]3 years ago
4 0
If you’re referring to stoichiometry, which usually involves the long t-tables of multiple conversions, then you’re not alone in wondering the purpose of using them. The purpose of conversion tables is to help keep track of what you’re doing. When quickly converting one value to another, it’s very easy to forget a particular piece to the puzzle, or to use a factor that doesn’t work for that instance. Teachers usually draw out a t-table every time they work a problem so as not to confuse students, but anytime you’re working with funky units or converting across systems (metric to imperial and vice versa) it’s a good idea to use them.
You might be interested in
A _____________ is a reagent that protects a component of the analyte from reaction with edta.
zepelin [54]
The answer is masking agent
4 0
2 years ago
1. Compare masses: a) 0,4mol CO₂ and 0,6mol H₂O ; b) 0,135mol H₂SO₄ and 0,5mol HCI.
bixtya [17]

Answer:

you can now deduct which one is greater or smaller and by how much.

Explanation:

no of moles= mass/molar mass

1ai) 0.4 = m/ ( 12 + (16*2)

m= 0.4* 44

m= 17.6g

ii) 0.6= m/( 2*1 + 16)

m= 0.6 *18

m= 10.8g

b) 0.135 = m/ ( 2*1 +32 + (16*4)

m= 0.135* 98

m= 13.23g

ii) 0.5= m/ (1+35.5)

m= 0.5*36.5

m= 18.25g

2. Avogadro's Number = 6.02×10²³

1 mol of any element= 6.02×10²³ particles

a) 0.1 mol of H20= (6.02×10²³) * 0.1

= 6.02×10²² molecules

ii) 0.3 mol of CO2= (6.02×10²³) * 0.3

= 1.806 × 10²³ molecules

Ans: 0.3 mol of CO2

bi) 0.25 mol of HCl= (6.02×10²³) * 0.25

= 1.505 × 10²³ molecules

bii) - find the no of moles first:

no of moles= mass/molar mass

n= 3.4g/ 34g →mr of H2S in g=2+32= 34g

n= 0.l mol

- use the Avogadro Number.

0.1 mol of H20= (6.02×10²³) * 0.1

= 6.02×10²² molecules.

biii) here you're given the density, use it to find the mass of acetic acid.

ρ = 1049 g/ml

ρ = m/v, where v=5 ml

1049 = m/ 5

m= ρ*v

m= 1049*5

m= 5245 g

• convert this into moles.

mr of CH3COOH= 12 + 3+ 12+ 16+ 16+ 1

= 60

mr in g = 60g

n= m/mr

n= 5245/ 60

n= 87. 41666...

n= 87.4 moles

•using Avogadro's Number:

87.4 moles of acetic acid=(6.02×10²³)*87.4

= 2.25148* 10²⁵

= 2.25 * 10²⁵ molecules

thus, the ans for this is 5 ml of acetic acid.

7 0
2 years ago
Oxygen has 8 electrons. Is it chemically inert or reactive?
liraira [26]

Answer:

Reactive

Explanation:

8 0
3 years ago
Read 2 more answers
Which chemical in the atmosphere of Titan (a moon of Saturn) plays the same role that water plays on the Earth by producing "rai
ololo11 [35]

Answer:

Methane (CH₄)

Explanation:

Titan refers to the largest moon of the planet Saturn, comprising a very dense atmosphere. This moon is primarily comprised of nitrogen gas, which is similar to the conditions in earth. It is extremely cold having a temperature of about ₋180°C, as a result of which it is difficult for the liquid water to exist.

Acid rain is a type of precipitation that occurs in the earth and it results in the release of a certain amount of methane gas (CH₄). Similarly, there also occurs precipitation in Titan but it releases CH₄ instead of water.  This methane is responsible for the increasing amount of temperature.

Thus, methane is a chemical that is present int the Titan's atmosphere, and it plays a similar role as in earth, the water plays by forming snow, rain, and ice.

7 0
3 years ago
what is the work done by a bird pulling a worm from the dirt with a force of .05 N and a distance of .07 m
masya89 [10]
Hello!

Work=Force*Displacment

Work=.05N * .07m = .0035J

Any questions please feel free to ask. Thank you.
5 0
3 years ago
Other questions:
  • Which of the following statements best describes the energy transformation that occurs when a log burns? Mechanical energy chang
    14·2 answers
  • What tool did scientist use to first study the Earth’s interior
    13·1 answer
  • Why would the reliability of results collected for an experiment increase when several groups of students conduct the same exper
    9·1 answer
  • What is revealed in the reaction ca2+(aq) + 2oh-(aq) ca(oh)2(s), deltah + 16.71?
    15·2 answers
  • Question 7 of 10
    11·1 answer
  • Which substance has the greatest of elements?<br> Sugar 45 elements
    14·1 answer
  • What is the name of the family with an oxidation number of +2?
    11·2 answers
  • Why do you think it is necessary to break up the fat into tiny droplets?
    7·1 answer
  • Filling Air Bags Automobile air bags produce nitrogen gas from the reaction:
    8·1 answer
  • During what change is heat absorbed?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!