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
mote1985 [20]
3 years ago
7

When you wish upon a shootingstar you are actually wishing ona(n)...​

Chemistry
1 answer:
Andreyy893 years ago
8 0
Meteor

Because they are the ones that get attracted to earth due to earth’s gravity and get burned in atmosphere due to friction caused by high speed
You might be interested in
How are they related "atom" "molecule"
zhenek [66]

Answer:

mixture of atoms forms molecule

7 0
2 years ago
Read 2 more answers
What volumes of 0.200 M HCOOH and 2.00 M NaOH would make 500. mL of a buffer with the same pH as a buffer made from 475 mL of 0.
Hitman42 [59]

Explanation:

The given data is as follows.

      [HCOOH] = 0.2 M,       [NaOH] = 2.0 M,

         V = 500 ml,   [Benzoic acid] = 0.2 M

First, we will calculate the number of moles of benzoic acid as follows.

   No. of moles of benzoic acid = Molarity × Volume

                         = 2 \times 0.475

                         = 0.095 mol

And, moles of NaOH present in the solution will be as follows.

    No. of moles of NaOH = Molarity × Volume

                          = 2 \times 0.025

                          = 0.05 mol

Hence, the ICE table for the chemical equation will be as follows.

         C_{6}H_{5}COOH + NaOH \rightarrow C_{6}H_{5}COONa + H_{2}O

Initial:        0.095           0.05            0             0

Equlbm:  (0.095 - 0.05)  0            0.05

        pH = pK_{a} + log \frac{Base}{Acid}  

              = 4.2 + log \frac{0.05}{0.045}

              = 4.245

For,  

         HCOOH + NaOH \rightarrow HCOONa + H_{2}O

Initial:       0.2x     2(0.5 - x)               0

Equlbm:   0.2x - 2(0.5 - x)                 0             2(0.5 - x)

As,

           pH = pK_{a} + log \frac{Base}{Acid}  

          4.245 = 3.75 + log \frac{Base}{Acid}

      log \frac{Base}{Acid} = 0.5

    \frac{Base}{Acid} = 3.162

Now,

        \frac{2(0.5 - x)}{0.2x - 2(0.5 - x)} = 3.162

               x = 0.464 L

Volume of NaOH = (0.5 - 0.464) L

                             = 0.036 L

                             = 36 ml               (as 1 L = 1000 mL)

And, volume of formic acid is 464 mL.

                 

8 0
3 years ago
Please help me with these two
Anna [14]
They exist in the outer orbitals
3 0
3 years ago
The moon is not visible during which phase
Tanzania [10]
The answer would be B. New Moon.
4 0
3 years ago
Read 2 more answers
What is the ratio of Fe ions to O ions in a neutral compound?
AVprozaik [17]
1:1

Fe has a charge of 2+ while O has a charge of 2-.

Formula: FeO
3 0
3 years ago
Read 2 more answers
Other questions:
  • what is weather? What are some terms we use to describe weather? What affects the weather in a particular place over time?
    13·2 answers
  • Round the following numbers to 3 significant figures.
    10·1 answer
  • Describe the process illustrated in the diagram above. How many individuals would exist if the process continued for one more ge
    14·1 answer
  • #1: Which of the following is likely to be a polar compound?
    8·1 answer
  • Oxygen has an atomic mass of 16 and an atomic number of 8. how many neutrons are present
    7·1 answer
  • .....m..........m.....mm...​
    6·1 answer
  • When calculating percent error, the accepted value is in the denominator <br> True or false
    8·2 answers
  • What is the oxidation number for Zn(OH)4 2-?
    5·1 answer
  • What is the relationship between the volume of a gas and its pressure?
    10·1 answer
  • After the first steps in writing an equation, the equation is balanced by
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!