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
riadik2000 [5.3K]
3 years ago
9

Marcus measured the masses and volumes of samples of four different substances, and he calculated their densities. The table sho

ws Marcus’s measured and calculated values. Substance Mass (g) Volume (cm3) Density (g/cm3) aluminum 5.7 2.1 2.7 copper 14.4 1.6 9.0 iron 9.5 1.2 7.9 titanium 8.6 1.8 4.8 Next, Marcus obtained another sample, which is made of one of the four substances that he had already measured. The table shows Marcus’s measured values for this unknown sample. Substance Mass (g) Volume (cm3) ? 9.5 2.1 What is the unknown sample made of?
Chemistry
2 answers:
gayaneshka [121]3 years ago
5 0

the answer is D) Titanium. you divide the mass by volume and titanium has the closest density yo the number you get. I also chose titanium and got it right. goodluck


larisa [96]3 years ago
4 0

Answer:

The unknown substance is made up titanium.

Explanation:

Density is defined as mass present in the unit volume of the substance.It is an intensive property.

Density of Aluminium = 2.7 g/cm^3

Density of copper = 9.0 g/cm^3

Density of iron = 7.9 g/cm^3

Density of titanium = 4.8 g/cm^3

Density of the unknown substance:

\frac{mass}{Volume}=\frac{9.5 g}{2.1 cm^3}=4.5 g/cm^3

The density of the unknown substance is close to the density of the titanium. This means that unknown substance is made of titanium.

You might be interested in
Theresa invested $5,000 in an account she expects will earn 7% annually. Approximately how many years will it take for the accou
Lady_Fox [76]
About 7-8 years More. The real answer would be 7.14285714286

3 0
3 years ago
A student wants to heat a piece of iron so that its temperature rises by 20 degrees C. What information does she need about the
LekaFEV [45]
Mass................
5 0
3 years ago
Read 2 more answers
Do oxygen atoms become more stable or less stable when oxygen forms compounds? Explain
4vir4ik [10]
They become more stable because they achieve a full outer shell of valence electrons with the magic number of 8.

5 0
3 years ago
Read 2 more answers
if the Celsius temperature of a gas at constant pressure is increased from 10 Celsius to 20 Celsius the volume is
svet-max [94.6K]

Answer:

               The volume is increased.

Explanation:

                     According to <em>Charles' Law</em>, " <em>at constant pressure the volume and temperature of the gas are directly proportional to each other</em>". Mathematically this law is presented as;

                                                    V₁ / T₁ = V₂ / T₂   -----(1)

In statement the data given is,

T₁  =  10 °C  =  283.15 K                    ∴  K  =  273.15 + °C

T₂  =  20 °C  =  293.15 K

So, it is clear that the temperature is being increased hence, we will find an increase in volume. Let us assume that the starting volume is 100 L, so,

V₁  =  100 L

V₂  =  Unknown

Now, we will arrange equation 1 for V₂ as,

                                                    V₂  =  V₁ × T₂ / T₁

Putting values,

                                     V₂  = 100 L × 293.15 K / 283.15 K

                                     V₂  = 103.52 L

Hence, it is proved that by increasing temperature from 10 °C to 20 °C resulted in the increase of Volume from 100 L to 103.52 L.

3 0
3 years ago
What type of reaction occurs when complex compounds are broken down into simpler substances?
Zarrin [17]
Complex compounds are broken down to simpler substances in catabolic reactions.

These kinds of reactions often occur in biological systems. In living organisms, complex compounds like lipids, proteins and complex sugar like cellulose are broken down into simpler forms. Products of these reactions are simple sugars, amino acids etc. but a certain amount of energy is also produced and stored in energy molecules for future use.
4 0
3 years ago
Other questions:
  • Suppose you are measuring the mass of a sample using a balance that employs a standard mass of density dw = 8.0 g/ml. what is th
    7·1 answer
  • Weak acids are poor conductors of:
    5·1 answer
  • 1. Which of the following best describes the relationship
    13·1 answer
  • In the laboratory, a student adds 50.4 mL of water to 16.5 mL of a 0.880 M hydroiodic acid solution. What is the concentration o
    14·1 answer
  • Calculate the concentration of all species in a 0.165 m solution of h2co3.
    7·1 answer
  • Valid experiment for does water and oil mix
    5·1 answer
  • A rocket can fly into space because ?
    13·1 answer
  • Use the information provided below to answer the
    15·1 answer
  • A group of students created a model showing a type of matter which of the following discribes what is shows by the model?
    10·1 answer
  • How do you reduce ester to carboxylic acid?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!