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
Soloha48 [4]
2 years ago
7

Calculate the density of an object with a mass of 3.8 g, that when placed in a 10.0 mL graduated cylinder with an initial volume

of 4.5 mL rises to a final volume of 8.6 mL. *
Chemistry
1 answer:
Arturiano [62]2 years ago
3 0

Answer : The density of an object is 0.93 g/mL

Explanation : Given,

Mass of an object = 3.8 g

Initial volume = 4.5 mL

Final volume = 8.6 mL

First we have to calculate the volume of an object.

Volume of an object = Final volume - Initial volume

Volume of an object = 8.6 mL - 4.5 mL

Volume of an object = 4.1 mL

Now we have to calculate the density of an object.

Formula used:

\text{Density}=\frac{\text{Mass of an object}}{\text{Volume of an object}}

Now putting all the given values in this formula, we get:

\text{Density}=\frac{3.8g}{4.1mL}

\text{Density}=0.93g/mL

Therefore, the density of an object is 0.93 g/mL

You might be interested in
Choose the ingredients needed for nuclear fusion. Check all that apply. energy helium gas high temperatures hydrogen gas low pre
Igoryamba

answer:

high temperatures

hydrogen gas

7 0
3 years ago
Fe2O3 + CO --> Fe + CO2
satela [25.4K]

Answer:

The answer to your question is

1.-Fe₂O₃

2.- 280 g

3.- 330 g

Explanation:

Data

mass of CO = 224 g

mass of Fe₂O₃ = 400 g

mass of Fe = ?

mass of CO₂

Balanced chemical reaction

                       Fe₂O₃   + 3CO    ⇒  2Fe  +   3CO₂

1.- Calculate the molar mass of Fe₂O₃ and CO

Fe₂O₃ = (56 x 2) + (16 x 3) = 160 g

CO = 12 + 16 = 28 g

2.- Calculate the proportions

theoretical proportion Fe₂O₃ /3CO = 160/84 = 1.90

experimental proportion Fe₂O₃ / CO = 400/224 = 1.78

As the experimental proportion is lower than the theoretical, we conclude that the Fe₂O₃ is the limiting reactant.

3.-     160 g of Fe₂O₃  --------------- 2(56) g of Fe

         400 g of Fe₂O₃ ---------------  x

         x = (400 x 112) / 160

        x = 280 g of Fe

4.-      160 g of Fe₂O₃  --------------- 3(44) g of CO₂

          400 g of Fe₂O₃  --------------  x

          x = (400 x 132)/160

         x = 330 gr

3 0
3 years ago
If a solution has virtually no hydrogen ions what type of ph does it have?
lora16 [44]
D. It has almost no hydrogen ions, therefore it is very basic.
7 0
3 years ago
Read 2 more answers
How many molecules are there in 0.75 mol NH3
vitfil [10]
3 *0.75 = 2.25 mol that’s is ur answer for this question
4 0
2 years ago
Synthetic, or man-made, elements typically exist for only a short time
o-na [289]
This is true. Elements past lead are radioactive, because the repulsive force of the protons cannot be overpowered by the “gluing” ability of neutrons (remember, likes repel). As more and more protons are added, generally, the elements become more unstable; for example, Bismuth, right next to lead on the Periodic Table, is radioactive, but the half life of this element is about a billion times longer than the current age of the universe, but Oganesson, element number 118, has a half life of fractions of a second.
8 0
3 years ago
Other questions:
  • Students place 650 milliliters of water into the water bottle. Convert 650 milliliters to liters.
    11·1 answer
  • In a laboratory experiment, john uses a message to seperate soil particles from water . Which technique separation which techniq
    11·1 answer
  • Suppose you are investigating how the amount of exercise a hamster gets affects how long the hamster lives. In order to control
    15·2 answers
  • What is an isomer? How many possible isomers of hexane are there? What are the structural differences between these isomers?
    14·1 answer
  • Which sentence from A Girl from Yamhill best illustrates the author's use of sensory language? (A) I was not afraid and did not
    8·2 answers
  • Identify bohrs model of the atom. His model described the reactivity of an element based on its number of valence electrons.
    5·2 answers
  • How many significant figures does 546.000 have
    10·1 answer
  • Scientists believe that the earth's core is:
    12·1 answer
  • Helpppppppppppppppppppppppppppppppppppppppp
    12·2 answers
  • An atom has 10 total electrons. How would you describe the reactivity of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!