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
ohaa [14]
3 years ago
6

Scientists in a lab are working with two different samples of the element mercury. They know that the different samples are diff

erent isotopes.
Which property of the isotopes must be different?
a. the atomic number
b. the electric charge
c. the element name
d. the mass number
Chemistry
2 answers:
svetoff [14.1K]3 years ago
6 0

Answer:

A Mass number

Explanation:

did it on edge2020

paisleigh
2 years ago
2021 edge
Slav-nsk [51]3 years ago
3 0
B.) the electric charge
You might be interested in
Which substance can be broken down by chemical means?
zepelin [54]
Methanol is the substance that can be broken down by chemical means, the remaining ones are elements.
4 0
3 years ago
Read 2 more answers
There are several different models that represent compounds. One type of model is shown.
Kipish [7]
What I’m seeing on quizlet says what you’re describing is a ball-and-stick model.
3 0
2 years ago
Read 2 more answers
For each item, choose whether the change is a physical change or chemical change
Aleonysh [2.5K]

Sorry, but where are the ‘items’?

8 0
3 years ago
Which option accurately describes the first two stages of photosynthesis?
Lemur [1.5K]

Answer;

A) Stage 1: Chlorophyll captures light energy. Stage 2: Light energy is converted to chemical energy.

Explanation;

-Photosynthesis is the process by which green plants use energy from the sun, water and carbon dioxide to make organic compounds such as simple sugars together with release of oxygen.

-The process occurs in tow stages; light-dependent stage and light independent stage. During light dependent stage, chlorophyll absorbs sunlight and uses it to split water molecules into hydrogen ions and oxygen atoms. In the light independent stage carbon (iv) dioxide is fixed and the result is organic compound; the light energy is converted to chemical energy.

4 0
3 years ago
Menthol is a flavoring agent extracted from peppermint oil. it contains c, h, and o. in one combustion analysis, 10.00 mg of the
marishachu [46]
Combustion reaction for menthol is as follows;
CxHyOz + O₂ ---> xCO₂ +  H₂O
Mass of CO₂ formed - 28.16 mg
Therefore number of moles formed - 28.16/ 44 g/mol = 0.64 mmol
Mass of water formed  - 11.53 mg
number of water moles formed - 11.53 mg/18 g/mol = 0.64 mmol
From CO₂,
1 mol of CO₂ - 1 mol of C and 2 mol of O
therefore number of C moles - 0.64 mmol
                                 O moles - 1.28 mmol
from H₂O
1 mol of H₂O - 2 mol of H and 1 mol of O
number of H moles - 1.28 mmol
                 O moles - 0.64 mmol

Mass of menthol initially - 10 mg
in reactions, the masses of products are equal to the masses of reactants. The excess mass to the products formed is due to O₂ in air
Original mass of menthol - 10 mg
mass of water and CO₂ - 11.53 mg + 28.16 mg = 39.69
Difference in mass - 39.69 - 10 = 29.69 mg
This difference comes from O moles in air - 29.69 mg/ 16 g/mol = 1.8556 mmol
then O moles coming from menthol - (1.28 + 0.64) - 1.8556 = 0.064 mmol

In menthol 
C moles - 0.64 mmol
H moles - 1.28 mmol
O moles - 0.064 mmol
ratios of C:H:O
C          H         O
0.64    1.28      0.064
x1000  x1000    x1000 to get whole numbers
640       1280      64
10          20          1
Simplest ratio of C:H:O is 10:20:1
therefore empirical formula of menthol is C₁₀H₂₀O


5 0
3 years ago
Other questions:
  • What is the pOH of a<br> 5.6 x 10-5 M solution of cesium<br> hydroxide (CsOH)?
    9·1 answer
  • What are the sub-particles that make up an atom? (select all that apply) *?
    6·1 answer
  • How do different forms of transportation meet people’s transportation needs?
    12·1 answer
  • A graduated cylinder with just water has a volume of 20.0 mL. When a 25.0 g piece of zinc alloy is added, the new volume is 23.2
    12·1 answer
  • Plz answer (g) i will give rating 5 and thanks who answer plz fast
    6·1 answer
  • Which substance would be expected to have the highest electrical conductivity? A. Al(s) B. Al₂O₃(s) C. MgCl₂(aq) D. HCl(g)
    10·1 answer
  • Which of the following is equal to Avogadro's number?​
    6·1 answer
  • Assess two situations in which it is important to question scientific issues in the media.
    7·1 answer
  • What do you call a 3 legged hippopotamus
    12·1 answer
  • Explain how to calculate the number of grams in 5.50 x 1022 atoms.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!