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
stiks02 [169]
3 years ago
12

QUESTION 3

Chemistry
1 answer:
aev [14]3 years ago
4 0
Bacteria can’t live without humans
You might be interested in
How many atoms are equal to 4.61 moles of carbon?
Effectus [21]
Well accounting google,


Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro's number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole).
5 0
3 years ago
Read 2 more answers
Number 14 please help.. chemistry
Zolol [24]

Taking into account the definition of density, the mass of a substance with a volume of 150 cm³ and a density of 1.5 \frac{g}{cm^{3} }  is 225 grams.

<h3>What is density</h3>

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density=\frac{mass}{volume}

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

<h3>Mass of the substance in this case</h3>

In this case, you know that:

  • Density= 1.5 \frac{g}{cm^{3} }
  • Volume= 150 cm³

Replacing in the definition of density:

1.5 \frac{g}{cm^{3} } =\frac{mass}{150 cm^{3} }

Solving:

mass= 1.5 \frac{g}{cm^{3} }  ×150 cm³

<u><em>mass= 225 g</em></u>

In summary, the mass of a substance with a volume of 150 cm³ and a density of 1.5 \frac{g}{cm^{3} }  is 225 grams.

Learn more about density:

brainly.com/question/952755

brainly.com/question/1462554

#SPJ1

7 0
2 years ago
Heart cells require a certain balance of sodium and potassium ions to function. The blood, which is approximately 83% water, car
drek231 [11]
The property of water is its polarity
6 0
3 years ago
Bethany has a fish tank at her house. She uses the following data table to keep track of the nitrate and phosphate levels in the
malfutka [58]
<span>sudden increase of Nitrate and Phosphate in March to April that occurred, it causes the fish tank to produce algae</span>
6 0
3 years ago
Read 2 more answers
Hello &lt;3 I just need some help with periodic table of elements.
garik1379 [7]

Answer:

11

Explanation:

An atomic number of 11 means this atom will have 11 protons. A mass number of 23 means 23 - 11 this atom will have 12 neutrons. Since this atom is neutral the positive protons must be equal to the negative electrons. This atom will have 11 electrons

8 0
2 years ago
Read 2 more answers
Other questions:
  • What method would best allow these three different scientists to demonstrate their concepts?
    7·1 answer
  • Is mixing salt and pepper physical or chemical change ?
    13·1 answer
  • How has the scientific community addressed the safety of chemicals?
    14·1 answer
  • How many protons does the bohr model have for helium?
    14·1 answer
  • What happens to the average kinetic energy of gas particles as the temperature increases?
    13·1 answer
  • Covalent bonds usually occur between atoms that have and . A. High molecular weights; large atomic radii B. Low ionization energ
    13·1 answer
  • Which age range would you expect to find a higher mortality rate in a typical disease?
    9·1 answer
  • QUESTION 17
    14·1 answer
  • Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous sodium bromide NaBr and liquid water
    9·1 answer
  • What is pollution?<br>when the tip of<br>a<br>plant is cut, it does not grow tall, why​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!