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
Afina-wow [57]
3 years ago
9

A graduated cylinder contains 15.75 mL of water. A metal that weighs 31.745 g is added. The final reading is 38.55 mL. Using the

correct number of significant figures, determine the density of the metal = _____ g/mL First Determine Volume of Metal: Report result to the same number of decimal places as the number with the least number of decimal places. Use this volume in calculation. Second Determine Density of metal: D=M/V Report result to the same number of significant figures as the number with the least number of significant figures. Do not use exponential notation in answer.
Chemistry
1 answer:
Butoxors [25]3 years ago
7 0
V = 38.55 mL - 15.75 mL = 22.80 mL = 22.80 cm³

D = \frac{M}{V} = \frac{31.745 g}{ 22.80 cm^{3} } = 1.392 g/cm³
You might be interested in
What can I expect on the asvab
sergiy2304 [10]
Which situation is an example of internal conflict
3 0
3 years ago
Read 2 more answers
The volume of a gas is 605 liters at 27.0°C. The new temperature is -3.0°C. What is the new volume? (Remember to convert tempera
Daniel [21]

Answer: The new volume is 544 L

Explanation:

To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where,

V_1\text{ and }T_1 are the initial volume and temperature of the gas.

V_2\text{ and }T_2 are the final volume and temperature of the gas.

We are given:

V_1=605L\\T_1=27.0^oC=(27.0+273)K=300K\\V_2=?\\T_2=-3.0^0C=(273+(-3.0))K=270K

Putting values in above equation, we get:

\frac{605}{300}=\frac{V_2}{270}\\\\V_2=544L

Thus the new volume is 544 L

8 0
3 years ago
What law does a balanced chemical equation demonstrate?
DochEvi [55]

Answer:

The law of conservation of mass

Explanation:

A chemical equation is an expression of the net composition change associated with a chemical reaction. It shows how a certain amount of reactants yields a certain amount of products. Both of these amounts are measured in moles. Chemical equations often contain information about the state of the reactants: solid, liquid, gas, or aqueous. In addition, they always adhere to the law of conservation of mass, which holds that matter can change form, but cannot be created or destroyed.

3 0
3 years ago
Which of the following best defines climate)_( Short-term atmospheric conditions of a region Ob The weather pattern of an area o
Marina86 [1]

Answer:

Average weather conditions of a region over the long term

Explanation:

Climate is the long-term average of weather, typically averaged over a period of 30 years. More rigorously, it denotes the mean and variability of meteorological variables over a time spanning from months to millions of years.

4 0
3 years ago
30 pts! Sodium and water react according to the following equation. If 31.5g of sodium are added to excess water, how many liter
mihalych1998 [28]
First, calculate the number of moles of sodium present with the given mass,

              31.5 g of sodium x (1 mol sodium/ 23 g sodium) = 1.37 mol sodium

It is given in the equation that for every 2mols of sodium, one mol of H2 is produced.

           mols of H2 = (1.37 mols sodium)(1 mol H2/ 2 mols sodium)
                  mols of H2 = 0.685 mols H2

Then, at STP, 1 mol of gas = 22.4 L.
                
                 volume of H2 = (0.685 mols H2)(22.4 L / 1 mol)
                     volume of H2 = 15.34 L

Answer: 15.34 L
3 0
4 years ago
Other questions:
  • Superheated steam at 20 bar and 450oC flows at a rate of 200 kg/min to an adiabatic turbine, where it expands to 10 bar. The tur
    6·1 answer
  • An acid is a polar substance that dissolves in water and
    9·2 answers
  • At 500 °C, hydrogen iodide decomposes according to 2 HI ( g ) − ⇀ ↽ − H 2 ( g ) + I 2 ( g ) For HI ( g ) heated to 500 °C in a 1
    6·1 answer
  • Identify the choice that best completes the statement or answers the question.
    14·1 answer
  • The half-life of carbon 14 is 5,730 years. How much would be left of an original 50-gram sample after 2,292 years
    12·1 answer
  • What is the molecular structure of H2O?
    10·2 answers
  • What is the molarity of a solution if 509.6 grams of AgNO3 is dissolved into 12.5 Liters of water?
    12·2 answers
  • Consider the following precipitation reaction:
    8·1 answer
  • What do you predict will happen to the volume inside a container when pressure & temperature remains constant but the number
    5·1 answer
  • Rank the following salts in order of decreasing pH of their 0.1 M aqueous solutions:FeCl₂ , FeCl₃ , MgCl₂ , KClO₂
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!