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
viva [34]
3 years ago
12

______ reactions release energy.

Chemistry
1 answer:
Igoryamba3 years ago
4 0
Combustion reactions release energy in the form of heat. 
        Hope this helps and tell me if you need more help!
You might be interested in
Please can someone please help me !!
Anestetic [448]

Answer:

False

Explanation:

5 0
3 years ago
Beaches along the eastern and western coasts of North America are composed chiefly of quartz grains.
lidiya [134]
I think the answer is true. These beaches are composed mostly with sandstone which is mainly sand-sized minerals. These grains is made up of quartz and feldspar since these are the most common mineral found in Earth.
3 0
3 years ago
You put one ice cube on a room temperature rock and another ice cube on a room temperature piece of foil. Which ice cube will me
aksik [14]

Answer:

a ice cube on a room temperature rock

Explanation:

because the air temperature is warmer than the freezers which means the ice particle gather heat energy from warmer air.

5 0
3 years ago
PLEASE HELP WILL GIVE BRAINLIEST
goblinko [34]

Answer:

It traveled a different distance because one has 1 spring the other has 2 spring and the last has3 spring

6 0
2 years ago
If 34.7 g of AgNO₃ react with 28.6 g of H₂SO₄ according to this UNBALANCED equation below, how many grams of Ag₂SO₄ could be for
Luba_88 [7]

The  number  of grams   of Ag2SO4  that could be formed  is   31.8  grams



    <u><em> calculation</em></u>

Balanced   equation is  as below

2 AgNO3 (aq)  + H2SO4(aq)  →  Ag2SO4 (s)   +2 HNO3 (aq)


  • Find  the  moles  of  each reactant by use  of  mole= mass/molar mass  formula

that is  moles of  AgNO3= 34.7 g / 169.87  g/mol= 0.204 moles

             moles of  H2SO4 =  28.6  g/98  g/mol  =0.292  moles

  • use the  mole  ratio to determine the moles of  Ag2SO4

   that is;

  •    the mole ratio of  AgNo3 : Ag2SO4 is  2:1 therefore  the  moles of Ag2SO4=  0.204  x1/2=0.102 moles

  • The moles  ratio of H2SO4  : Ag2SO4  is  1:1  therefore  the moles of Ag2SO4 = 0.292  moles

 

  •      AgNO3  is the limiting reagent therefore  the moles of   Ag2SO4 = 0.102  moles

<h3>     finally  find  the mass  of Ag2SO4  by use of    mass=mole  x molar mass  formula</h3>

that  is  0.102   moles  x  311.8  g/mol= 31.8 grams

3 0
3 years ago
Other questions:
  • Which one of the following chemicals does the body generate during regular exercise?
    14·1 answer
  • How many equivalent resonance forms can be drawn for co32-? (carbon is the central atom.) how many equivalent resonance forms ca
    8·1 answer
  • A) What is the mass in grams of a sample of manganese (II) phosphite containing 7.23 x 10^22 phosphite ions?
    7·1 answer
  • Glucose, C6H12O6, is used as an energy source by the human body. The overall reaction in the body is described by the equation C
    10·1 answer
  • The voltage of a battery can be changed by altering the _____
    8·1 answer
  • Read the speedometer and report the speed to the proper
    8·1 answer
  • The electronic configuration of an element is 1s2s22p6. How many valence electrons does it have?
    9·1 answer
  • 9. Calculate the frequency of light with a wavelength = 12 km. (kilo = 10')
    11·1 answer
  • 1. What is the reactant in alcoholic and lactic-acid fermentation?
    5·1 answer
  • Conductors allows electricity to flow easily through them. (examples copper and
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!