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
FinnZ [79.3K]
3 years ago
10

20 points to whoever can answer these 3 questions correctly

Chemistry
1 answer:
Mkey [24]3 years ago
8 0

Answer:

1) A. NO

2) B. 4

3) D. 8

Explanation:

You might be interested in
Each Thursday the 11 kindergarten students in Miss Goodson's class are each allowed one slice of pie, one cup of orange juice, a
mixas84 [53]

How many were there to start off with?

4 0
2 years ago
Calculate the change in ph when 3.00 ml of 0.100 m hcl(aq) is added to 100.0 ml of a buffer solution that is 0.100 m in nh3(aq)
nikklg [1K]

The change in pH is calculated by:

pOH = Protein kinase B + log [NH4+]/ [NH3] 

Protein kinase B of ammonia = 4.74 

initial potential of oxygen hydroxide= 4.74 + log 0.100/0.100 = 4.74 
pH = 14 - 4.74=9.26 

moles NH4+ = moles NH3 = 0.100 L x 0.100 M = 0.0100 
moles H+ added = 3.00 x 10^-3 L x 0.100 M=0.000300 

NH3 + H+ = NH4+ 
moles NH3 = 0.0100 - 0.000300=0.00970 
moles NH4+ = 0.0100 + 0.000300=0.0103 

pOH = 4.74 + log 0.0103/ 0.00970= 4.77 
oH = 14 - 4.77 = 9.23 

the change is  = 9.26 - 9.23 =0.03 

7 0
3 years ago
Solids, liquids, and gases are three common states of matter. in which of these physical states would a water molecule likely ha
melamori03 [73]
The States of Matter are classified into solid, liquid, and gas. Among these physical states, if we are going to refer to the water molecules, the one that would possess the greatest energy is gas. If you would take the energy of gas, this would become liquid. The answer is option C.
8 0
3 years ago
What is the mass of snow (in tons) on a 150.0ft by 45.0 ft flat roof after a 6.0 inch snowfall? Assume that 11 inches of snow is
Aneli [31]
6 inches of snowfall would be equivalent to 6/11 inches of water or 6/132 feet. So the volume of the equivalent amount of water on the roof is 150 ft. x 45 ft. x 6/132ft. = 306.8 cubic feet.   
Since there are 907185 grams in a ton and 28316.8 mL in a cubic foot, 1.00 g/mL is equivalent to 0.0312 tons/cubic foot  
Multiplying the two results gives 9.58 tons of snow.
5 0
3 years ago
Which of these molecules is nonpolar?<br> a.CH3CI<br> b.CO<br> c.O2<br> d.PF3
valentina_108 [34]

Answer:

i think the answer is D

Explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Sulfuric acid will react with which of the following to form sulfur dioxide gas Select one: a. Sodium sulfite b. Thioacetamide c
    8·1 answer
  • What is the relstionship between a mutatation and gene
    14·1 answer
  • Chemistry intro please help
    5·1 answer
  • Which of the following is an organic compound?
    5·2 answers
  • Is 22.99 mol of Na equal or not equal to Avogadro's number?
    10·1 answer
  • The .......................................................... Is related to its tendency to give away electrons and form positi
    7·1 answer
  • If an unknow metal has the mass of 40g and volume of 75ml, what is the density of the metal?
    8·1 answer
  •  how are subscripts determine the formula of ionic and covalent compounds ?
    14·1 answer
  • The chemical formula for the ionic compound aluminum sulfite is Al2(SO3)3. Explain why there are 2 cations for every 3 anions in
    5·1 answer
  • I need help. Look at the pictures.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!