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
Vedmedyk [2.9K]
3 years ago
10

NEED HELP!!! PLEASE, AND THANK YOU!!! ^^ <3

Chemistry
2 answers:
Aneli [31]3 years ago
7 0

Answer:

B

Explanation:

Mrrafil [7]3 years ago
4 0
I think the answer is C
You might be interested in
I need help with these 4
storchak [24]

Rift Valley Examples

  • East African
  • Rhine Rift Valley (Germany)
  • Baikal Rift Valley (Russia)

Rift Valley Facts/Characteristics

  • Bordered by fault zones and separating land masses
  • A portion of land that drops, forming a valley.
  • Formed as tectonic plates move.

Fossils - Examples

  • Bones
  • Shells
  • Exoskeletons
  • Stone imprints of animals.

Non Examples of Fossils

  • Stones
  • rocks
  • Some bones (If they are fossils they will be a lot heavier than other bones.

Hope this helps.

5 0
3 years ago
Which of the following best describes careers that use chemistry?
telo118 [61]

Answer:

D

Explanation:

7 0
3 years ago
How many electrons does Br lose or gain to fill its octet?
Greeley [361]

i think it is 8. I might be wrong.

4 0
3 years ago
You perform a combustion analysis on a 255 mg sample of a substance that contains only C, H, and O, and you find that 561 mg of
zhuklara [117]
The combustion of an organic compound is mostly written as,
                        CaHbOc + O2 --> CO2 + H2O
where a, b, and c are supposed to be the subscripts of the elements C, H, and O in the compound. Determining the number of moles of C and H in the product which is the same as that in the compound,
   (Carbon, C)   :   (561 mg) x (12/44) = 153 mg x (1 mmole/12 mg) = 12.75
   (Hydrogen, H) :  (306 mg) x (2/18)  = 34 mg x (1 mmole/1 mg) = 34 
   Calculating for amount of O in the sample,
(oxygen, O) = 255 - 153 mg - 34 mg = 68 mg x (1mmole/16 mg) = 4.25 
The empirical formula is therefore,
                        C(51/4)H34O17/4
                           C3H8O1
The molar mass of the empirical formula is 60. Therefore, the molecular formula of the compound is,
                                C9H24O3
5 0
4 years ago
Read 2 more answers
Which instrument is used to measure mass?
alexdok [17]

Answer:

Balance

Explanation:

hope i helped

7 0
3 years ago
Other questions:
  • Study the ions that contain the element chlorine. What are some similarities between the formulas for these ions?
    15·1 answer
  • Decomposition of potassium chlorate (KClO3) produces potassium chloride (KCl) and pure oxygen (O2). The balanced equation for th
    5·2 answers
  • If an atom has 16 protons, 14 neutrons, and 18 electrons. What is the charge of the nucleus?
    7·1 answer
  • In one compound of lead and sulfur, there are 6.46 g of lead
    13·1 answer
  • A chemistry student must separate should barium sulfate from the aqueous solution. Equipment and glassware normally found in the
    11·1 answer
  • What is the chemical formula for borax
    13·2 answers
  • A standard room temperature and pressure, most of the elements on the periodic table are
    14·1 answer
  • What is the mass ratio and atomic ratio for cl2o7
    11·1 answer
  • Given the reaction below, how many grams of Li3N can be formed from 6.07 g of Li? Assume an excess of nitrogen.
    10·1 answer
  • What was johann dobereiner contribution to the periodic table
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!