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
Leviafan [203]
3 years ago
8

What is the mass of an object if the density is 7.85g/l and the volume is 41.25ml

Chemistry
1 answer:
Blababa [14]3 years ago
7 0
The density is the ratio between mass and volume. So the mass is the product between density and volume. But! You have to control the units of measure.

7.85 g/l = 0.00785 kg/l

41.25 ml = 0.04125 l

Mass = (0.00785) x (0.04125) = 0,00032381 kg ---> 0,32381 g

(I hope this is right )
You might be interested in
Entrance Question: What is a physical trait? Explain using complete sentences.
azamat

Answer: A physical trait is a defining aspect or feature of your body or other subject that you can see visually.

Explanation:

6 0
3 years ago
Colorful fireworks often involve the decomposition of barium nitrate and potassium chlorate and the reaction of the metals magne
Fynjy0 [20]

Fireworks owe their colors to reactions of combustion of the metals present. When Mg and Al burn, they emit a white bright light, whereas iron emits a gold light. Besides metals, oxygen is necesary for the combustion. The decomposition reactions of barium nitrate and potassium chlorate provide this element. At the same time, barium can burn emitting a green light.

(a) Barium nitrate is a <em>salt</em> formed by the <em>cation</em> barium Ba²⁺ and the <em>anion</em> nitrate NO₃⁻. Its formula is Ba(NO₃)₂. Potassium chlorate is a <em>salt</em> formed by the <em>cation</em> potassium K⁺ and the <em>anion</em> chlorate ClO₃⁻. Its formula is KClO₃.

(b) The balanced equation for the decomposition of potassium chloride is:

2KClO₃(s) ⇄ 2KCl(s) + 3O₂(g)

(c)  The balanced equation for the decomposition of barium nitrate is:

Ba(NO₃)₂(s) ⇄ BaO(s) + N₂(g) + 3O₂(g)

(d) The balanced equations of metals with oxygen to form metal oxides are:

  • 2 Mg(s) + O₂(g) ⇄ 2 MgO(s)
  • 4 Al(s) + 3 O₂(g) ⇄ 2 Al₂O₃(s)
  • 4 Fe(s) + 3 O₂(g) ⇄ 2 Fe₂O₃(s)

5 0
3 years ago
What is the total number of valence electrons in an atom of germanium in the ground state?
Shalnov [3]
The answer is (4) 4. Germanium is a main group element in group 4A. Therefore, like carbon, it has 4 valence electrons in the ground state.
3 0
3 years ago
How many Noble gases are there?
melomori [17]

Answer:

six noble gases

Here are five of the six noble gases: helium, neon, argon, kypton and xeon. They're all colourless and transparent. Krypton and xeon form compounds only with difficulty. Helium, neon and argon don't form compounds at all.

3 0
3 years ago
Read 2 more answers
What could you change or add to your models based on what you have learned about molecules and phases so far?
timurjin [86]

Answer:Phase changes require either the addition of heat energy (melting, evaporation, and sublimation) or subtraction of heat energy (condensation and freezing). ... Changing the amount of heat energy usually causes a temperature change.

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Calculate Ecell at 80 ºC for a voltaic cell based on the following redox reaction: H2(g, 1.25 atm) + 2AgCl(s) → 2Ag(s) + 2H+(aq,
    13·1 answer
  • I WILL RATE BRAINLIEST!!!! NEED QUICK HELP!!!!
    14·1 answer
  • Above the critical pressure, a substance is a(n) _____ fluid.
    12·1 answer
  • A. Is straining cooked pasta from water a physical or chemical separation?
    12·1 answer
  • The Bohr model of an atom shows a nucleus with electrons circling around it. What does the Bohr model show that makes it a usefu
    10·1 answer
  • Which statement defines the heat capacity of a sample? the temperature of a given sample the temperature that a given sample can
    9·1 answer
  • ____________ or _____________ serve as nutrients for plants. <br>please please help meee​
    5·2 answers
  • Find the density of a cube volume of 150 cm and a mass of 100g
    8·1 answer
  • Explain newton's first law of motion
    8·1 answer
  • ______ contributes to the nitrogen cycle by removing nitrogen from the air and converting it into a form that is usable by plant
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!