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
In-s [12.5K]
3 years ago
11

Which of the following best describes a vacuum? Hot Cold Shiny Empty

Chemistry
2 answers:
Sauron [17]3 years ago
7 0

Answer:

hot

Explanation:

wel3 years ago
4 0

Answer:

shiny

Explanation:

You might be interested in
Mg + 2 AgNO₃ → Mg(NO₃)₂ + 2 Ag How many grams of magnesium nitrate, Mg(NO₃)₂, are formed when 9.87 moles of silver nitrate, AgNO
Aleksandr-060686 [28]

Mass of Magnesium nitrate formed : 731.86 g

<h3>Further explanation</h3>

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

Mg + 2AgNO₃ → Mg(NO₃)₂ + 2 Ag

moles of silver nitrate, AgNO₃ = 9.87

mole ratio AgNO₃ : Mg(NO₃)₂ = 2 : 1, so mol Mg(NO₃)₂ :

\tt \dfrac{1}{2}\times 9.87=4.935

mass of Mg(NO₃)₂(MW=148,3 g/mol) :

\tt mass=mol\times MW\\\\mass=4.935\times 148,3\\\\mass=731.86~g

4 0
3 years ago
What is an aromatic compound​
SIZIF [17.4K]

Answer:

Aromatic compound, any of a large class of unsaturated chemical compounds characterized by one or more planar rings of atoms joined by covalent bonds of two different kinds. ... Aromaticity results from particular bonding arrangements that cause certain π (pi) electrons within a molecule to be strongly held.

Explanation:

:}}}}}}}}}}}}}}}}}}}}}}}

5 0
3 years ago
What is a material that contains three elements joined in a fixed proportion
zepelin [54]

If a material contains three elements joined in a fixed proportion, it is a(an) _____.  

d.) compound

5 0
3 years ago
PLEASE HELP!!!
Brums [2.3K]

Answer: I believe the answer is A

Explanation:

4 0
2 years ago
Which term defines the following: grams of solute divided by 1,000,000 grams of solution
tino4ka555 [31]
The correct answer among the choices is option A. The term that defines the following: grams of solute divided by 1,000,000 grams of solution is called ppm. This is one way of expressing concentration. Parts per million is also equal to 1 milligram of solute per kilogram of solution.
6 0
3 years ago
Read 2 more answers
Other questions:
  • How can chemistry enhance our view of the world?
    5·1 answer
  • 7. A detonation of a nuclear explosive above 100,000 feet of altitude is called ______________.
    10·1 answer
  • Given the equation representing a system at equilibrium:
    11·2 answers
  • What is the pOH of a solution of HNO3 that has [OH-] = 9.50 10-9 M?
    5·2 answers
  • 100 POINTS!!
    5·2 answers
  • Solvent: Will give brainliest
    10·2 answers
  • Wine goes bad soon after opening because the ethanol (CH3CH2OH) dissolved in it reacts with oxygen (O2) gas to form water and aq
    9·1 answer
  • a solution k is saturated at 33 g solute in 100g solvent if a 50g solute is added to 200g solvent solution k is​
    6·1 answer
  • Pls help and make sure of your answer I have an exam tmrw and it will come
    10·1 answer
  • If a yellow paint is to have 0.511% pbcro4 by mass, how many grams of chromite are needed per kilogram of paint?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!