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
ddd [48]
2 years ago
12

What is the [Na2SO4] (MM = 142.04 g/mol) in ppt if 100.00 mL of a

Chemistry
1 answer:
Ugo [173]2 years ago
7 0

Answer:

1.345

Explanation:

I THINK SORRY

You might be interested in
A sample of copper absorbs 4.31E+1 kJ of heat, resulting in a temperature rise of 6.71E+1 °C. Determine the mass (in kg) of the
olga2289 [7]

Answer: 1.67 kg

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed=4.31\times 10^1kJ = 43100J   (1kJ=1000J)

m= mass of substance = ?

c = specific heat capacity = 0.385J/g^0C

Change in temperature ,\Delta T=T_f-T_i=6.71\times 10^1^0C=67.1^0C

Putting in the values, we get:

43100J=m\times 0.385J/g^0C\times 67.1^0C

m=1670g=1.67kg   (1kg=1000g)

Thus the mass (in kg) of the copper sample is 1.67

3 0
3 years ago
[Send a message] as you move across a row from left to right in the period table, atomic numbers of the elements
SashulF [63]
I think it might be D or B 
And my other two might be A or C 
6 0
3 years ago
Why was the cell did covered only after the invention of the microscope
nikdorinn [45]

They are too small to see with the naked eye

6 0
3 years ago
Read 2 more answers
For a fusion reaction to happen, matter needs to be in which of the following states? A. plasma B. liquid C. solid D. gas
Ksivusya [100]
Matter needs to be in a plasma state for fusion to occur.
3 0
3 years ago
Determine whether or not the mixing of each of the two solutions indicated below will result in a buffer.
WARRIOR [948]
Part A

75.0 mL of 0.10 M HF; 55.0 mL of 0.15 M NaF

This combination will form a buffer.

Explanation

Here, weak acid HF and its conjugate base F- is available in the solution

Part B

150.0 mL of 0.10 M HF; 135.0 mL of 0.175 M HCl

This combination cannot form a buffer.

Explanation

Here, moles of HF = 0.15 x 0.1 = 0.015 moles

Moles of HCl = 0.135 x 0.175 = 0.023

Since HCl is a strong acid and the number of HCl is higher than HF. This prevents the dissociation of HF and the conjugate base F- will not be available in the solution

Part C

165.0 mL of 0.10 M HF; 135.0 mL of 0.050 M KOH

This combination will form a buffer.

Explanation

Moles of HF = 0.165 x 0.1 = 0.0165 moles

Moles of KOH = 0.135 x 0.05 = 0.00675 moles

Moles of KOH is not sufficient for the complete neutralization of HF. Thus weak acid HF and its conjugate base F- is available in the solution and form a buffer

Part D

125.0 mL of 0.15 M CH3NH2; 120.0 mL of 0.25 M CH3NH3Cl

This combination will form a buffer

Explanation

Here, weak acid CH3NH3+ and its conjugate base CH3NH2 is available in the solution and form a buffer

Part E

105.0 mL of 0.15 M CH3NH2; 95.0 mL of 0.10 M HCl

This combination will form a buffer

Explanation

Moles of CH3NH2 = 0.105 x 0.15 = 0.01575 moles

Moles of HCl = 0.095 x 0.1 = 0.0095 moles

Thus the HCl completely reacts with CH3NH2 and converts a part of the CH3NH2 to CH3NH3+. This results weak acid CH3NH3+ and its conjugate base CH3NH2 is in the solution and form a buffer
5 0
3 years ago
Other questions:
  • What is the purpose of plasma membrane?
    8·2 answers
  • Which of these products is made from an animal product?
    6·1 answer
  • State the oxide formed from non-metals
    15·1 answer
  • Will give brainliest
    5·2 answers
  • Iron forms a series of compounds of the type Fex(CO)y. In air, they are oxidized to Fe2O3and CO2gas. After heating a 0.142 g sam
    7·1 answer
  • Which one are only compounds? *
    11·2 answers
  • Which substance can lead to addiction, or drug dependence, if abused?
    10·1 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
  • Fill in the reaction type and predicted products for:
    7·1 answer
  • What descriptive term is applied to the type of diene represented by 1,5-octadiene?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!