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
Jobisdone [24]
2 years ago
9

The law of constant composition states: All atoms of a given element have a constant composition and are different than atoms of

any other element.
A. The nucleus is a dense region of positive charge that always contains protons and neutrons.
B. Matter cannot be either created or destroyed in a chemical reaction.
C. All samples of a given compound have the same proportions of their constituent elements.
D. none of the above
Chemistry
1 answer:
Airida [17]2 years ago
7 0

Answer:

C

Explanation:

The law proves C. For examples no matter how water you have it will always have a 1:2 ratio of oxygen to hydrogen. :)

You might be interested in
A student performs an experiment to find the percentage of water in a hydrate. He determines that the hydrate contains 22% water
Stels [109]

Answer:

A feasible error could have been the removal of the sample before all water evaporated.

Explanation:

In order to determine the percentage of water in an hydrate, an experiment that could be performed is the heating of the sample until the mass does not change. If the student heated the sample an insufficient amount of time, water will be present in the sample, thus reducing the percentage reported.

4 0
3 years ago
What is the empirical formula of a compound that contains 32.39 percent sodium, 22.53 percent sulfur, and 45.07 percent oxygen?
djverab [1.8K]
To get the empirical formula of this compound, we take a basis of 100 grams which means each percentage is equivalent to 1 gram. Hence there is 32.39 grams sodium, 22. 53 grams sulfur and 45.07 grams oxygen. We convert each mass to their moles by dividing by their respective molar mass. Na: 1.408, S:0.704 and O:2.82. divide each with the lowest: Na: 2: S: 1 and O:4. Hence the formula is Na2SO4.
5 0
2 years ago
Which change absorbs heat?
Sphinxa [80]

Answer:

Using a Laptop computer

4 0
3 years ago
Read 2 more answers
Suppose that you are performing a titration on a monoprotic acid. Titration of this monoprotic acid required a volume of 0.1L of
Alex73 [517]

Answer: A) More base is likely required to reach the endpoint for the diprotic acid than for the monoprotic acid under these conditions

Explanation:

The monoprotic acid (HA) has a valency of 1 and diprotic acid  (H_2A) has a valency of 2.

As the concentration and volume of the diprotic acid and the monoprotic acids are equal.

The neutralization reaction for monoprotic acid is:

HA+BOH\rightarrow BA+H_2O

The neutralization reaction for diprotic acid is:

H_2A+2BOH\rightarrow B_2A+2H_2O

Thus more number of moles of base are required for neutralization of diprotic acid and thus the volume required will be more as concentration and volume of the diprotic acid and the monoprotic acids are equal.

6 0
3 years ago
What does nitrogen do to the soil
Tresset [83]

Answer:The chemical element will always get converted during the cycle as it enters different ecosystems. Nitrogen plays an important role as a nutrient in soils. It is needed for photosynthesis in plants. Nitrogen helps decomposers such as bacteria, worms

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • 12. Which of the following statements is true about a nickel-cadmium dry cell? (Points : 3) The cathode reaction is Cd + 2OH Cd(
    6·1 answer
  • PLEASE HELP WILL GIVE BRAINLIEST!!!
    6·1 answer
  • One of the ingredients used to make bread is yeast, a type of microorganism. This may seem odd, to use a microorganism as an ing
    11·2 answers
  • A marked price
    10·1 answer
  • Please help me with this in the picture I need 8 thing wrong and 8 what should they do right
    12·1 answer
  • How to cook brainly?<br> ps:e
    15·1 answer
  • Which of the different components of smog depicted in the graph are most likely released from automobile exhaust?
    10·1 answer
  • List three aids with example that are useful for people who are optically impaired​
    15·1 answer
  • A car with a mass of 3,500lbs accelerates negatively from 35m/s to 8m/s in 8s. What is the
    14·1 answer
  • Please help with this question
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!