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
kotykmax [81]
3 years ago
15

What is the volume of an object with the mass of 7.9 grams in the density of 1.28g/ml.

Chemistry
1 answer:
ExtremeBDS [4]3 years ago
8 0

Answer: V = 6.17 mL

Explanation: Density is expressed in the formula:

d = m/V

Derive for V:

V= m/d

= 7.9 g / 1.28 g/ mL

= 6.17 mL

You might be interested in
A scuba diver knows that she needs 50.0mol of air for an upcoming dive. What size (volume) tank will she need to fill for this d
erica [24]

Answer:

1120 L.

Explanation:

Hello!

In this case, as no conditions of pressure of temperature are given for this problem, we can assume that the scuba diver dives at STP (1 atm and 273.15 K), which means that 1 mole of air would occupy a volume of 22.4 L.

In such a way, since she needs 50.0 moles of air, the following ratio is useful to compute the size (volume) of the tank she needs:

V_2=\frac{V_1*n_2}{n_1}

Thereby, we plug in to obtain:

V_2=\frac{22.4L*50.0mol}{1mol}\\\\V_2=1120 L

Best regards!

4 0
3 years ago
Choose ALL TRUE statements about calorimetry from the choices below:
Ostrovityanka [42]

Answer:

True statment

2) Styrofoam would make a good calorimeter

3) Insulating material would make a good calorimeter

Explanation:

The calorimeter is one which is insulated that is which will not absorb or let the heat to escape from it. the calorimeter is used to measure the heat change during a process so if it will allow to exchange heat with surrounding it will deviate the readings or observence.

Copper is a good conductor of heat so we cannot use it make a calorimeter.

Hence

1) Copper would make a good calorimeter : False

2) Styrofoam would make a good calorimeter: True

Styrofoam is a bad conductor or insulator so it can be and it is used for calorimeter.

3) Insulating material would make a good calorimeter : True

4) A good calorimeter should easily absorb heat : false

6 0
3 years ago
Choose the term that best describes the following statement: a system in equilibrium will oppose a change in a way that helps re
Scorpion4ik [409]
Le Chatelier's principle (D)
3 0
3 years ago
Properties such as luster, conductivity, and flexibility are used to describe what type of elements
sineoko [7]
Metals
............
............
6 0
3 years ago
Identify the compound with the highest standard free energy of formation. identify the compound with the highest standard free e
Anestetic [448]
The compound with the highest standard free energy of formation is O3(g)


7 0
3 years ago
Other questions:
  • In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used
    6·1 answer
  • Read the following, and answer the questions below. Remember to read the question carefully.
    9·1 answer
  • Number of different bond angles for pbr2f3
    10·1 answer
  • How does a buffer resist change in ph upon addition of a strong acid?
    15·1 answer
  • Which state of matter has the highest density?
    8·2 answers
  • What would be an example of a landform from magma?
    5·2 answers
  • Which of the following is NOT a clue that a chemical change has occurred? * 1 point Sugar turns blackish-brown as it is heated.
    7·1 answer
  • Neon is a gas made up of only one type of atom. Which term best describes neon
    14·2 answers
  • What is the pH when the hydrogen ion concentration is 1 x 10-3 M?
    11·1 answer
  • Gold has a configuration of 1s22s22p63s23p63d104824p64d105525p645145d10651
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!