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
photoshop1234 [79]
3 years ago
12

Cholesterol is an example of a(n) _____. monosaccharide polysaccharide lipid enzyme

Chemistry
1 answer:
seropon [69]3 years ago
8 0

Cholesterol is an example of a lipid.

You might be interested in
Molar mass of 34.00 g/mol molecular formula
alukav5142 [94]
Multiplying the subscripts within the empirical formula by this number gives you the molecular formula H2O2. 
8 0
3 years ago
An astronaut is free-floating in space near a space station and it is not tethered to anything. He has some tools and a fire ext
worty [1.4K]

Hey there

the answers are

A.

and

D. He could spray the fire extinguisher in the opposite direction of the space station


hope this helps

7 0
3 years ago
Read 2 more answers
The standard enthalpy change for the following reaction is 873 kJ at 298 K.
Flura [38]

Answer:  - 436.5 kJ.

Explanation:

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation.

The given chemical reaction is,

2KCl(s)\rightarrow 2K(s)+Cl_2(g)  \Delta H_1=873kJ

Now we have to determine the value of \Delta H for the following reaction i.e,

K(s)+\frac{1}{2}Cl_2(g)\rightarrow KCl(s) \Delta H_2=?

According to the Hess’s law, if we divide the reaction by half then the \Delta H will also get halved and on reversing the reaction , the sign of enthlapy changes.

So, the value \Delta H_2 for the reaction will be:

\Delta H_2=\frac{1}{2}\times (-873kJ)

\Delta H_2=-436.5kJ

Hence, the value of \Delta H_2 for the reaction is -436.5 kJ.

8 0
3 years ago
What is the molar mass of a substance?
Sveta_85 [38]

Answer:

The mass in grams of one mole of a substance.

3 0
3 years ago
Plz HElp!!!!
valentina_108 [34]

Answer:

Substance 4

Explanation:

Density is defined as mass per unit volume. A substance floats in another when its density is less than that of the substance on which it floats.

If an object is immersed in a denser liquid, it will sink

Since the density of water is 1 g/cm^3, any substance whose density is less than that of water will float in it.

If we look at the table, substance 4 has a density of 0.5g/cm^3. Hence, substance 4 is expected to float in water.

7 0
2 years ago
Other questions:
  • 2. The Food and Drug Administration (FDA) mandates that all vinegar sold in the United States must have a minimum concentration
    6·1 answer
  • develop a hypothesis to explain why the radiation from the 14C source could be shielded more effectively than the radiation from
    14·1 answer
  • In an experiment, two unknown compounds (one an alcohol and the other an ether) of equal molecular mass were dissolved in water.
    9·1 answer
  • A reaction at evolves of dinitrogen monoxide gas. Calculate the volume of dinitrogen monoxide gas that is collected. You can ass
    12·1 answer
  • PLEASE HELP !! ILL GIVE BRAINLIEST !! 100 POINTS IF YOUR GOOD AT CHEMISTRY AND BIOLOGY .
    10·2 answers
  • Which measurable property of potassium can be used to support this statement: "Matter can be subdivided to the atomic level whil
    13·1 answer
  • How is the periodic table organised?
    9·2 answers
  • Story that ends with I suddenly wake up and realize that it was a dream​
    12·1 answer
  • Is H2SO4 + NaOH > Na2SO + H2O balanced
    10·1 answer
  • Which of the following is an example of a change from gravitational potential
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!