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
Allisa [31]
3 years ago
10

Can some answer this please?

Chemistry
2 answers:
Mumz [18]3 years ago
7 0

Answer:

i think its C

Explanation:

marysya [2.9K]3 years ago
4 0

Answer:

b

Explanation:

it's b because I just went over that frome my class and got it correct

You might be interested in
Which of the following statements regarding radiation are FALSE?
kari74 [83]

Answer:

All of the given statements are true.

Explanation:

All the elements are heavier than Bismuth (Bi) are radioactive.

The time for half of the original sample to spontaneous decay is called half life (t_{1/2})

t_{1/2}=\frac{ln\:2}{\lambda}\\\lambda\:is\:the\:radioactive\:decay\:constant

All radioactive elements are spontaneously decaying towards formation of a stable element.

Radioactive elements undergo decay in order to attain stability.

Radioactivity is a natural part of our environment. The earth also contains several primordial long-lived radioisotopes that have survived to the present in significant amounts.

Hence, all the given statements are true.

5 0
3 years ago
This iron oxide mineral commonly has a reddish color and consistently has red streaks. What mineral is it?
Nezavi [6.7K]

solution:

This iron oxide mineral commonly has a reddish color and consistently has red streaks. this streaks is hematite.

6 0
3 years ago
A solution is prepared by mixing 25.0 g H2O and 25.0 g C2H5OH. Determine the mole fractions of each substance.
Veronika [31]

Answer:

Mole fraction H₂O → 0.72

Mole fraction C₂H₅OH → 0.28

Explanation:

By the mass of the two elements in the solution, we determine the moles of each:

25 g . 1 mol/ 18g = 1.39 moles of water (solute)

25 g . 1 mol / 46 g = 0.543 moles of ethanol (solvent)

Mole fraction solute = Moles of solute / Total moles

Mole fraction solvent = Moles of solvent / Total moles

Total moles = Moles of solute + Moles of solvent

1.39 moles of solute + 0.543 moles of solvent = 1.933 moles → Total moles

Mole fraction H₂O = 1.39 / 1.933 → 0.72

Mole fraction C₂H₅OH= 0.543 / 1.933 → 0.28

Remember that sum of mole fractions = 1

8 0
3 years ago
Read 2 more answers
In what industry do fertilizers and pesticides wash off and contaminate water supplies?Construction Oil Transportation Agricultu
KIM [24]

Answer:

The answer is agriculture.

Explanation:

3 0
3 years ago
A 2.500g sample of compound containing only Carbon and Hydrogen is found containing 2.002g of Carbon. Determine the empirical fo
Dima020 [189]

The empirical formula : CH₃

<h3>Further explanation</h3>

Given

2.5 g sample

2.002 g Carbon

Required

The empirical formula

Solution

Mass of Hydrogen :

= 2.5 - 2.002

= 0.498

Mol ratio C : H :

C : 2.002/12 = 0.167

H : 0.498/1 = 0.498

Divide by 0.167 :

C : H = 1 : 3

7 0
2 years ago
Other questions:
  • You need 2.5 moles of aluminum for an experiment. How many grams of aluminum is this?
    10·1 answer
  • Will mark brainliest please Help !
    6·1 answer
  • which of the following terms refers to areas of gas on the on the suns surface that are cooler than the gases around them
    8·1 answer
  • Throughput is a term that refers to the amount of ?
    8·1 answer
  • Is hot water added to a bath conduction, convection, or radiation
    5·1 answer
  • The process where all chemical reactions within organisms enable them to maintain life is known as
    15·2 answers
  • A temperature of –25°C is equivalent to: Question 2 options: 25 K. 248 K. –25 K. 298 K.\
    9·1 answer
  • 6.45 g of C6H12O6 is burned in a bomb calorimeter containing 950. g of water and the temperature goes from 35.0∘C to 42.3∘C. If
    7·2 answers
  • Electrons are shared. Is it Ionic bond, covalent bond or both?
    13·1 answer
  • Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!