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
RideAnS [48]
4 years ago
15

Burets are often used to carefully measure the amount of liquid added to a reaction. The long thin buret tube is marked every mi

lliliter and every tenth of a milliliter. Which of the following measurements is correct for a volume of liquid in a buret?
a. 30 ml
b. 32 mL
c. 32.0 mL
d. 32.01 mL
Chemistry
1 answer:
Brrunno [24]4 years ago
4 0

Answer:

c. 32.0 mL

Explanation:

Buret can measure upto one tenth of a mL . That means it can measure upto one decimal point of a mL . Out of given measurement 32.0 mL reads upto one decimal point of mL so this reading seems to be the reading taken of a liquid in a buret.

You might be interested in
How many is too many
Rufina [12.5K]

Answer:

to manyneh nrjwsj

Explanation:

6 0
3 years ago
Ammonia can be produced in the laboratory by heating ammonium chloride
AnnyKZ [126]

Answer:

Mass = 2.89 g

Explanation:

Given data:

Mass of NH₄Cl = 8.939 g

Mass of Ca(OH)₂ = 7.48 g

Mass of ammonia produced = ?

Solution:

2NH₄Cl   +  Ca(OH)₂     →    CaCl₂ + 2NH₃ + 2H₂O

Number of moles of NH₄Cl:

Number of moles = mass/molar mass

Number of moles = 8.939 g / 53.5 g/mol

Number of moles = 0.17 mol

Number of moles of Ca(OH)₂ :

Number of moles = mass/molar mass

Number of moles = 7.48 g / 74.1 g/mol

Number of moles = 0.10 mol

Now we will compare the moles of ammonia with both reactant.

                      NH₄Cl          :          NH₃

                          2              :           2

                         0.17          :          0.17

                   Ca(OH)₂         :          NH₃

                        1                :           2

                    0.10              :          2/1×0.10 = 0.2 mol

Less number of moles of ammonia are produced by ammonium chloride it will act as limiting reactant.

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 0.17 mol × 17 g/mol

Mass = 2.89 g

6 0
3 years ago
The melting of ice is an example of a process that is: Select the correct answer below: always spontaneous always nonspontaneous
kolezko [41]

Answer:

Option C, spontaneous or nonspontaneous depending upon the temperature of the surroundings and pressure

Explanation:

AT room temperature, the temperature is favorable for ice to melt and hence melting of ice at room temperature is spontaneous but when the temperature is below the melting point and even then the ice melts then it is called non spontaneous. In this case, the enthalpy and entropy together create a positive change in the free energy for melting.

Hence, option C is correct

7 0
3 years ago
A 4.00 M H3PO4 solution will contain ___ g of H3PO4 in 0.500 L of solution.
harkovskaia [24]
Which of the following statements is generally true about change in the workplace ? a ) Most people accept change easily . b) Smart companies can avoid change altogether. c) Change in the workplace fairly infrequently d) Individuals can learn to manage the change in their lives.
5 0
3 years ago
2Kl + Pb(NO3)2 ------> 2KNO3 + Pbl2
Phoenix [80]
Molar mass KI = 166.0028 g/mol   and Pbl₂ = 461.0089 g/mol

<span>2 Kl + Pb(NO</span>₃<span>)</span>₂<span> ------> 2 KNO</span>₃<span> + Pbl</span>₂<span>
</span>
2 x 166.0028 g ---------> 461.0089 g
           ? g KI -------------> 1.2 g

Mass KI = 1.2 x 2 x 166.0028 / 461.0089

Mass KI = 398.40672 / 461.0089

Mass KI = 0.86 g

Answer B

hope this helps!


4 0
3 years ago
Other questions:
  • In the following reaction, how many grams of nitroglycerin C3H5(NO3)3 will decompose to give 25 grams of CO2? 4C3H5(NO3)3(l) 12C
    10·2 answers
  • When an action force occurs, the reaction force is always Question 6 options: A.in the same direction as the action force. B.app
    5·2 answers
  • Give some examples of pure chemical substances. give some examples of pure chemical substances. gasoline soda water and brass br
    12·1 answer
  • Please explain how we judge the brightness of stars.
    11·1 answer
  • Can someone help me
    9·1 answer
  • A sample of hydrated calcium sulfate has a mass of 20.88 g. After it is heated, it has a mass of 16.51 g. What is the percentage
    11·2 answers
  • Francium is an extremely rare alkali metal, many of whose physical properties
    7·1 answer
  • What are the non-living components of an ecosystem? The non-living components of an ecosystem are factors.
    9·2 answers
  • What type of heat transfer happens when warm air in
    11·2 answers
  • What type of conservation tillage leaves the greatest amount of soil cover by crop residues? What are the advantages and disadva
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!