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
eimsori [14]
3 years ago
9

Polysaccharides always:a. are a string of 3 or more sugar molecules.b. contain lipids.c. are polymers.d. The first and second ch

oices are correct.e. The first and third choices are correct.
Chemistry
1 answer:
tamaranim1 [39]3 years ago
7 0

Answer:e. The first and third choices are correct.

Explanation:

You might be interested in
To convert 20 g of ice at -10°C to 110°C to steam you need<br> cal of energy?
shtirl [24]

Answer:

29,200 cal = 1.22 E 5 joules

Explanation:

hope this helps

6 0
3 years ago
Write out and BALANCE the following equation: Solid Scandium metal
Rama09 [41]
I need points thanks I need points thanks I need points thanks Wkbejwiwbwe e enjwkwkebe b a owl qiwi192928 Ake eleve
4 0
3 years ago
Which characteristic of life is described as the transfer of DNA from parent to offspring, and is important for keeping a specie
deff fn [24]
B is correct answer I believe
5 0
3 years ago
Read 2 more answers
The reaction of iron and water vapor results in an equilibrium3 Fe(s) + 4 H2O (g) ⇋ Fe3O4 (s) + 4 H2 (g) Kc = 5.0 at 800.°CWhat
labwork [276]

<u>Answer:</u> The equilibrium concentration of water is 0.1 M

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (in L)}}

Given mass of hydrogen gas = 7.5 g

Molar mass of hydrogen gas = 2 g/mol

Volume of solution = 15.0 L

Putting values in above equation, we get:

\text{Molarity of hydrogen gas}=\frac{7.5}{2g/mol\times 15.0}\\\\\text{Molarity of hydrogen gas}=0.25M

For the given chemical equation:

3Fe(s)+4H_2O(g)\rightleftharpoons Fe_3O_4(s)+4H_2(g)

As, the reaction is initiated by hydrogen gas, the reaction will proceed backwards and the equilibrium constant will be the reciprocal of equilibrium constant for the given reaction.

Now, the reaction becomes:

                       Fe_3O_4(s)+4H_2(g)\rightleftharpoons 3Fe(s)+4H_2O(g);K_c'

Initial:                                 0.25        

At eqllm:                           0.25-4x                       4x

We are given:

K_c=5.0

So, K_c'=\frac{1}{5.0}=0.2

The expression of K_c' for above equation follows:

K_c'=\frac{[H_2O]^4}{[H_2]^4}

The concentration of pure solids and liquids are taken as 1  in the equilibrium constant expression.

Putting values in above equation, we get:

0.2=\frac{(4x)^4}{(0.25-4x)^4}\\\\x=-0.126,0.025

Neglecting the value of x = -0.126 because concentration cannot be negative.

So, equilibrium concentration of water = 4x=(4\times 0.025)=0.1M

Hence, the equilibrium concentration of water is 0.1 M

7 0
3 years ago
Using the standardized NaOH solution in the previous
geniusboy [140]

Answer:

Using the standardized NaOH solution in the previous question, the titration of 5.00 mL of vinegar required 42.25 mL of NaOH. What is the % of acetic acid in the vinegar? Concentration of NaOH from previous question= 0.0986 M. David C

Explanation:

Eh?

6 0
3 years ago
Read 2 more answers
Other questions:
  • How many electrons are contained in the p orbital of the methyl radical?
    13·1 answer
  • Help help help help
    5·1 answer
  • The atmosphere of the gas giants is usually made up mostly of hydrogen and ______.
    8·2 answers
  • Is the following sentence true or false. very few minerals are compound
    10·1 answer
  • What are the 3 types of weathering
    13·2 answers
  • What is the definition of the fugacity coefficient for a pure component, and its condition at the ideal gas state?
    15·1 answer
  • Pressure drop in packed column ..... a tray column
    7·1 answer
  • In a short paragraph, describe how I fuel cell works.
    6·1 answer
  • How did the planets form?
    8·2 answers
  • Antara berikut ciri manakah bear tentang cuka?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!