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
madreJ [45]
3 years ago
7

Anyone I’m really lost

Mathematics
1 answer:
Savatey [412]3 years ago
3 0

Answer:

The answer is option 3.

Step-by-step explanation:

You have to substitute H+=2×10^(-9) into the equation of pH :

pH = -log[H+]

H+ = 2×10^(-9)

pH = -log[2×10^-9]

= 8.70 (3s.f)

You might be interested in
The fraction
anzhelika [568]
0.17 because its in the hundredths place
3 0
3 years ago
Read 2 more answers
4x-3(x + 5) > 7-4(x + 6)
I am Lyosha [343]
4x - 3(x + 5) > 7 - 4(x + 6)  |use distributive property; a(b + c) = ab + ac

4x - 3x - 15 > 7 - 4x - 24  |combine items

x - 15 > -4x - 17    |add 15 to both sides

x > -4x - 2    |add 4x to both sides

5x > -2    |divide both sides by 5

x > - 2/5
7 0
3 years ago
PLZ HELP !!!! WILL MARK BRAINLIEST, THIS IS DUE IN 15 MINUTIES !!!ANYONE PLEASEPLZ HELP !!!! WILL MARK BRAINLIEST, THIS IS DUE I
BartSMP [9]

the answer is c i know it is

8 0
3 years ago
Read 2 more answers
Solve for y.<br><br> 6(y+4)=-3(2y-2) +8y<br><br> Simplify your answer as much as possible.<br> y =
nadezda [96]

Answer:

6(y + 4) = -3(2y - 2) + 8y

6y + 24 = -6y + 6 + 8y

6y + 24 = 2y + 6

Subtract -2y on both sides

4y + 24 = 6

Subtract -24 on both sides

4y = -18

y = - 4.5

7 0
4 years ago
Read 2 more answers
12 7 t = 47 yes or no
Sholpan [36]
Is the 12 and 7 together or.....
8 0
4 years ago
Other questions:
  • Fully Factor 3x^2 – 16x + 20
    13·1 answer
  • Please help me simplify this rational expression
    11·1 answer
  • A boy weighs 55 pounds. How much does he weigh in kilograms?
    11·1 answer
  • I need this problem to be simplified
    13·2 answers
  • I need to calculate a=8c-b divided by c, how do I calculate?
    11·1 answer
  • In a​ study, researchers wanted to measure the effect of alcohol on the hippocampal​ region, the portion of the brain responsibl
    10·1 answer
  • The monthly gross receipts for the ABC Copy Creation house amounted to $20,834.34. Unfortunately, the expenses amounted to $18,7
    11·1 answer
  • The Pythagorean Theorem is
    7·2 answers
  • When using a power tool, never engage the?
    9·1 answer
  • Hello!! This question is really confusing so I would like some help, please!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!