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
vagabundo [1.1K]
3 years ago
5

Help please, i will mark brainliest.

Chemistry
1 answer:
ki77a [65]3 years ago
5 0

Answer:

you tube

Explanation:

HI

You might be interested in
A chemist adds 135.0 mL of a 0.21M zinc nitrate (Zn(NO3) solution to a reaction flask. Calculate the mass in grams of zinc nitra
yKpoI14uk [10]

Answer:

5.36 grams the mass in grams of zinc nitrate the chemist has added to the flask.

Explanation:

Molarity=\frac{\text{Moles of solute}}{\text{Volume of the solution (L)}}

Moles of zinc nitrate = n

Volume of the solution = 135.0 mL = 0.1350 L

Molarity of the solution = 0.21 M

0.21 M=\frac{n}{0.1350 L}

n=0.21M\times 0.1350 L=0.02835 mol

Mass of 0.02835 moles of zinc nitrate:

0.02835 mol × 189 g/mol = 5.358 g ≈ 5.36 g

5.36 grams the mass in grams of zinc nitrate the chemist has added to the flask.

8 0
3 years ago
Give the name of one or more polysaccharides that matches each of the following descriptions:
adell [148]

Answer:

A Cellulose not digested by humans.

b. the storage form of carbohydrates in plants is starch

C amylose contains 1-4 glycosidic bond

D Glycogen and starch are highly branched polysaccharides.

Explanation:

8 0
2 years ago
Which of these elements is the most reactive?<br> potassium<br> calcium<br> titanium<br> scandium
vladimir1956 [14]

Answer:

Scandium is the most reactive

3 0
3 years ago
Which substance/s have covalent bond? Explain your answer.​
Viefleur [7K]
Covalent bonding occurs when electrons are shared between atoms. Double and triple covalent bonds occur when four or six electrons are shared between two atoms, and they are indicated in Lewis structures by drawing two or three lines connecting one atom to another.
4 0
3 years ago
For the following amino acids, draw a triangle around the amine group, draw a square around the carboxyl and circle the side gro
mylen [45]

hooc are carboxyl groups

your r or amino groups are those unique structures which have different atoms in them. your nh2 groups are your hydrogen atoms

4 0
3 years ago
Other questions:
  • A neutral atom has a mass number of 108 and in atomic number of 47 which atom is this? explain how you know.
    7·1 answer
  • Help me on number 4 and that last one says blood pressure
    10·1 answer
  • Which of the following is the correct representation of Gibbs’ Free Energy equation?
    5·2 answers
  • ___AIBr3+__K--&gt;__KBr+__AI
    6·1 answer
  • How many grams are equivalent to 1.80 x 10^-4 tons? (English tons)
    11·1 answer
  • The temperature of a 6.0-g sample of glass changed from 20°C to 45°C when it absorbed 550 J of heat. What is the specific heat o
    7·2 answers
  • Help me pls someone plss???help me pls someone plss???
    11·1 answer
  • Help me, I’m bad a science.
    11·1 answer
  • Need help with science pls help me
    15·1 answer
  • The table below shows the time that the Moon rose and set over a few days.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!