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
saveliy_v [14]
3 years ago
6

Physical change in a sentence

Chemistry
1 answer:
Wewaii [24]3 years ago
3 0
When you mix two products and there is no reaction

You might be interested in
A buffer is made that is .10M propanoic acid (pKa = 4.9) and .05M sodium propanoate. Calculate the pH.
inna [77]
PKa= 4.9 therefore ka= 10^-4.9=  1.259x10^-5

ka= \frac{[H^+][CH3CH2COO^-]}{[CH3CH2COOH]}

[CH3CH2COO^-]
= 0.05
[CH3CH2COOH]= 0.10

Therefore 1.259x10^-5 = \frac{[H^+][0.05]}{[0.1]}
Rearrange the equation to make the concentration of hydrogen the subject.
Therefore [H^+] =  \frac{(1.259*10^-5)(0.1)}{0.05}

Therefore [H^+]= 2.513*10^-5

pH= -log [H^+] = -log(2.513*10^-5)= 4.59.
7 0
3 years ago
Which of the following alcohols is used antifreeze?
bogdanovich [222]

Answer:

Ethylene glycol

3 0
3 years ago
g The most common position for an double bond in an unsaturated fatty acid is delta _________(fill in the number).
Stolb23 [73]

Answer:

The most common position for an double bond in an unsaturated fatty acid is delta 9 (Δ⁹)

Explanation:

Unsaturated fatty acids are carboxylic acids which contains one or more double bonds. The chain length as well as the number of double bonds is written separated by a colon. The positions of the double bonds are specified starting from the carboxyl carbon, numbered as 1, by superscript numbers following a delta (Δ). For example, an 18-carbon fatty acid containing a  single double bond between carbon number 9 and 10 is written as 18:1(Δ⁹).

In most monounsaturated fatty acids, the double bond is between C-9 and C-10 (Δ⁹), and the other double bonds of polyunsaturated fatty acids are generally Δ¹² and Δ¹⁵. This positioning is due to the nature of the biosynthesis of fatty acids. In the mammalian hepatocytes, double bonds are introduced easily into fatty acids at the Δ⁹ position, but cannot introduce additional double bonds between C-10 and the methyl-terminal end. However, plants are able to introduce these additional double bonds at the  Δ¹² and Δ¹⁵ positions.

5 0
4 years ago
if you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powered substance, wh
Goryan [66]
The process which has taken place is called CRYSTALLIZATION.
Generally, crystallization is the process by which solid crystals are precipitated from solution. Crystallization can also occur when a crystal melt or when a crystal get deposited directly from a  gas, although these cases are rarer compare to crystals forming from solutions.
5 0
4 years ago
If energy was added to solid, what state would it change to
12345 [234]

Answer:

Explanation:

The answer is C Liquid

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which is the correct name for P205?
    14·1 answer
  • How do geology and geosphere compare
    8·1 answer
  • A student balances the following redox reaction using half-reactions.
    6·2 answers
  • WILL GIVE BRAINIEST!!!!
    11·2 answers
  • Why do elements combine to form chemical compounds?
    7·1 answer
  • 2. Explain ways friction helps us or makes things easier in our daily life. Explain the effect of friction for each. Make sure y
    10·1 answer
  • List two common acids that are not harmful to the body when ingested and a product in which each is used.
    10·1 answer
  • The number behind the x is always
    15·1 answer
  • Please I need it asap
    9·2 answers
  • Lead melts at 328°c.how much heat is required when 23.0g of solid lead at 297 k condenses to a liquid at 702k?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!