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
Pavel [41]
2 years ago
12

I need it done asap as fast as possible

Chemistry
1 answer:
Lubov Fominskaja [6]2 years ago
6 0

Answer:

1. B

2. D. the form of a substance changes but not its identity

3. C

4. D

You might be interested in
Helppppp meeeeeeeeeeeeeeeeeeeeeeeeeeeee ill mark brainlist
sergey [27]
Grasshopper population will increase since they have less predators
3 0
3 years ago
Read 2 more answers
What is the formula for Heptaphosphorous pentoxide?
slega [8]

Answer:

P7F8

Explanation:

correct formula isP7F8

7 0
3 years ago
Amestec 140 g solutie 9% cu 260 g solutie 12%, cu 60 g apa si x g solutie 4%. Ce c procentuala are noua solutie %?
Levart [38]

Answer:

PLEASE SOMEONE SOLVE THE QUESTION OR I'M GONNA FAIL

Explanation:

Purpose and Theory: A tablet of vitamin C contains the active ingredient called ascorbic acid (HC,H,0.).

Ascorbic acid is an organic acid which is a white power and is soluble in water.

In the following microtitration lab you will be grinding up a vitamin C tablet

, and using a 0.10 g sample of the

vitamin C powder, which will be dissolved in 20-40 mL of water. This solution will be used to determine the

quantity of ascorbic acid in a commercial vitamin C tablet.

Groups

Lab 2

# of Drops 1 or Drops 2 of Drops 3

96

91

94

Hadia

Data & Analysis:

Complete the missing information in the following data table [24]

1

2

3

Trial

Volume of NaOH (drops)

0 05mL drop

(NaOH (O 0050mol/L)

Volume of NaOH (ML)

Average Volume of NaOH (ml)

T I

O 0050

00050

00050

The balanced chemical reaction between ascorbic acid and sodium hydroxide is:

HC,H,O + NaOH NaC,H,Oye H,O,

1. Stoichiometrically calculate the mass (in grams) of ascorbic acid in the powdered sample. 

3 0
3 years ago
When iron reacts with oxygen what substance is produced?
zhannawk [14.2K]
It will produce iron oxide
8 0
3 years ago
Charles is given two electrical conductors – aluminium and graphite. Help him to select one for making an electric wire. Justify
Iteru [2.4K]

Answer: aluminum I think

Explanation:

6 0
3 years ago
Other questions:
  • Rutherford's Simulation showed that the positive protons are scattered all over the atom. True False
    6·1 answer
  • What is the frequency of a wave?
    11·2 answers
  • How is light energy different from both sound and heat energy? A. Light energy can exist independently of matter. B. Light is mo
    14·2 answers
  • Who made the idea that as you go down the periodic table the atomic radius increases and the first ionization energy decreases?
    14·2 answers
  • What is the boiling point of a 1.5 m aqueous solution of fructose? the boiling point elevation constant of water is 0.515°c/m.
    6·1 answer
  • Density of water at 28 degrees
    12·1 answer
  • How much thermal energy is in 100 grams of water at 0 degrees celsius
    8·1 answer
  • Can tell the answer pls
    11·1 answer
  • If the earth's mantle were completely solid,__________ plates could not move around.
    13·2 answers
  • Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137 is 30.2 years. How much tim
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!