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
Veseljchak [2.6K]
3 years ago
10

Help me pretty please

Chemistry
1 answer:
almond37 [142]3 years ago
6 0

Answer:

I think it is D

Explanation:

You might be interested in
Is energy given off in a mixture?
Alex73 [517]
Yeah it depends on what mixture

8 0
3 years ago
What is the pH of a 75.0 mL solution that is 0.045 M in weak base and 0.053 M in the conjugate weak acid
noname [10]

Answer:

7.07

Explanation:

HA = weak acid = 0.053

A+ = conjugate base = 0.045

Ka = 7.2x10^-8

Ka = [H+][A-]/HA

7 2x10^-8 = [H+][0.045]/0.053

[H+] = 7.2x10^-8 x 0.053/0.045

= 8.48x10^-8

PH = -log[H+]

= -log[8.48x10^-8]

PH = -[login.48 + log10^-8]

PH = -0.928 - (-8)log10

= 7.07

3 0
3 years ago
Help please chapter 7.1
olga2289 [7]
1. 100N to the right
2. 10N to the left
3. 0N they are balanced
4. 0N they are balanced
8 0
3 years ago
One mole of nitrous acid (HNO2) contains 1.00 gram of hydrogen (H), 14.0 grams of nitrogen (N), and 32.0 grams of oxygen (O). Wh
Zigmanuir [339]
Mass % of nitrogen = mass of nitrogen*100  / total mass 

= 14*100 / (1+ 14 + 32)

= 14*100 / 47
= 29.7 % 



8 0
3 years ago
How can you write Mg(OH)2 in subscripts
Liula [17]
Mg(OH)2 is the correct chemical formula because it takes two Hydroxide ions to bond with Magnesium normally it would be written with a subscript number 2 rather than the parenthesis and number 2
7 0
3 years ago
Other questions:
  • What is the mass in grams of 2.01 x 10(22) atoms of mercury
    10·1 answer
  • Threonine, an amino acid whose pI is 5.6, is shown below. What would be the overall charge for threonine at a pH of 5.6?
    13·1 answer
  • PLEASE HELP ASAP WILL GIVE BRAINIEST AND 29 POINT
    8·2 answers
  • Please help me solve these chemical equations:
    9·2 answers
  • Two mixed cylinders have exactly the same volume. Cylinder A has a higher fraction of Al than cylinder B. Is the mass of cylinde
    6·1 answer
  • PLEASE HELP ASAP!!!!!!!! WILL GIVE BRAINLY!!!!!!! IN YOUR OWN WORDS!!!!!!!!!
    6·1 answer
  • Which molecule is an alkene?
    9·1 answer
  • A 13.00 g sample of citric acid reacts with an excess of baking soda as shown in the equation. What is the theoretical yield of
    13·2 answers
  • The following electron configuration notation represents an atom of which element?
    15·2 answers
  • About how many days does it take to go from one moon phase to another
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!