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
Lisa [10]
3 years ago
9

Combine the words volume and meniscus in one sentence.

Chemistry
1 answer:
vagabundo [1.1K]3 years ago
8 0
To measure volume, measure the lowest part of the meniscus
You might be interested in
HELP ASAP: Determine the enthalpy change of the following reaction: CH4 + 4Cl2 -> CCl4+ 4HCl 
Annette [7]

Answer:

A

Explanation:

In this question, we are to calculate the enthalpy of change of the reaction. ΔH

To be able to do that, we use the Hess’ law and it involves the subtraction of the summed heat reaction of the reactants from that of the product.

Thus, mathematically, the enthalpy of change of the reaction would be;

[ΔH(CCl4) + 4 ΔH(HCl)] - [ΔH(CH4) + 4 ΔH(Cl2)]

We can see that we multiplied some heat change by some numbers. This is corresponding to the number of moles of that compound in question in the reaction.

Also, for diatomic gases such as chlorine in the reaction above, the heat of reaction is zero.

Thus, we can have the modified equation as follows;

[ΔH(CCl4) + 4 ΔH(HCl)] - [ΔH(CH4)]

Substituting the values we have according to the question, we have;

-95.98 + 4(-92.3) -(-17.9)

= -95.98 - 369.2 + 17.9

= -447.28 KJ/mol

6 0
3 years ago
A 1.25 g sample of aluminum is reacted with 3.28 g of copper (II) sulfate. What is the limiting reactant?
mestny [16]

Answer:

d. Copper (II) sulfate

Explanation:

Given data:

Mass of Al = 1.25 g

Mass of CuSO₄ = 3.28 g

What is limiting reactant = ?

Solution:

Chemical equation:

2Al + 3CuSO₄   →   Al₂ (SO₄)₃ + 3Cu

Number of moles of Al:

Number of moles = mass/molar mass

Number of moles = 1.25 g/ 27 g/mol

Number of moles = 0.05 mol

Number of moles of CuSO₄:

Number of moles = mass/molar mass

Number of moles = 3.28 g/ 159.6 g/mol

Number of moles = 0.02 mol

now we will compare the moles of reactant with product.

              Al           :           Al₂ (SO₄)₃

                2          :             1

              0.05       :          1/2×0.05=0.025 mol

               Al           :            Cu

                2            :              3

              0.05         :            3/2×0.05 = 0.075 mol

        CuSO₄           :           Al₂ (SO₄)₃

               3             :             1

              0.02         :          1/3×0.02=0.007 mol

        CuSO₄           :            Cu

              3               :              3

              0.02         :              0.02  

Less number of moles of reactants are produced by CuSO₄ thus it will act as limiting reactant.

7 0
3 years ago
Question 3 (Fill-In-The-Blank Worth 3 points)
forsale [732]

Answer:

I THINK 25,000 CG CONVERTS TO 250G

Explanation:

8 0
3 years ago
Read 2 more answers
Is the movement of plates to form land masses is called plate tectonics
joja [24]
Yes the movement of land forms is called the movment of plate tectonics. :) plz thnk me
4 0
4 years ago
What is an ionic solid?
PtichkaEL [24]
Ionic solid means many positive and negative ions bonded to form a solid.

Hence B is the correct option.
Hope this helps!
6 0
3 years ago
Other questions:
  • Which protists lack cilia and flagella, but can still move around?
    8·1 answer
  • How do polar and nonpolar covalent bonds differ?
    8·1 answer
  • What is the charge that results when fluorine becomes an ion?
    5·1 answer
  • 2.41 x 10^2 Cm to meters
    10·2 answers
  • An antacid tablet was dissolved in water and 10mL of 0.16M HCl was added. After the acid had reacted with the tablet it required
    7·1 answer
  • 2.29987 nearest hundredth
    13·2 answers
  • PLEASE HELPP!
    9·1 answer
  • The magma inside of a volcano slowly cooled into rock. Over time, wind and water wore away the weaker rock surrounding it. The l
    5·2 answers
  • A 25.0 mL sample of an aqueous solution of calcium hydroxide, Ca(OH)2, is titrated to the equivalence point with 21.2 mL of 0.62
    11·1 answer
  • choose a reasonable mechanism for the formation of cyclohexylbenzene from the reaction of benzene, cyclohexene, and sulfuric aci
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!