CHEMISTRY HIGH SCHOOL

The substance which is dissolved in a solution is called:solvent
colloids
solute
precipitant

Answers

Answer 1
Answer:

Answer: The substance which is dissolved in a solution is called solute.

Explanation:

Solution is made up two parts:

1) Solute : The substance which is dissolves in a solvent to give a solution.

  • It is always present in less amount.

2) Solvent : The liquid substance in which solute is dissolved is known as solvent.

  • It is always present in large amount.

                             Solution = Solute + Solvent

For example : Salt as solute and water as solvent in salt solution.
Answer 2
Answer: The substance that is dissolved in water is called a solute.

Hope this helps~

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A scientist tests a new cough medicine by giving it to a group who have colds. The scientist gives another group with colds a liquid and tells them it is cough medicine. The people in both group are women between the age of 20 and 30 who normally are in good health
Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the following reactions: Reaction 1: N2 (g) + 3H2 (g) --> 2NH3 (g) Change in enthalpy: -91.8 kJ/molReaction 2: C (s, graphite) + 2H2 (g) --> CH4 (g) Change in enthalply: -74.9 kJ/molReaction 3: H2 (g) + 2C (s, graphite) + N2 (g) --> 2HCN (g) Change in enthalpy: +270.3 kJ/molInclude the following:The numerical answer with correct units.State which reactions, if any, you had to "Flip".State which reactions you had to multiply, if any, to get the correct amount of the compound.
Which statement is true regarding the formation of ionic bonds?(a). Anions and cations share electrons. (b). Atoms transfer electronsto form cations and anions. (c). Ions transfer electrons to form cations and anions. (d). Anions and cations donate electrons.
A yellow element stinks when burned
PLEASE HELPPPPP Antimony exists naturally as 2 isotopes. Antimony-121 has a mass of 120.9038 amu and an abundance of 57.30%. Determine the mass of the other isotope, antimony-123 knowing the average atomic mass of the element is 121.80 amu.

Rainforests are principally responsible for global oxygen turnover true or false

Answers

Answer:

False

Explanation:

Rainforests are very important for global oxygen movement, but they are not the main element for oxygen movement.

Seaweed is the real lung of the world, it is primarily responsible for the global movement of oxygen as it produces more oxygen through photosynthesis than it needs in breathing, and the excess is released into the environment. Rainforests release much less oxygen into the atmosphere worldwide, as most of the gas produced is consumed in the forests themselves. However, rainforests are extremely important and should not be destroyed.

false.....................................

What is heat?
(in scientific vocab)

Answers

my guess i dont know exactly but heat is energy

heat absorbed or radiated during a change of phase at a constant temperature and pressure. specific heat. the heat required to raise the temperature of one gram of a substance one degree centigrade. heat of condensation. heat liberated by a unit mass of gas at its boiling point as it condenses into a liquid.

What is the name of the hydrocarbon CH3(CH2)6CH3?

Answers

The carbon atoms bind together to create the compound's framework. Therefore, the name of the hydrocarbon CH_3(CH_2)_6CH_3 is  n-octane.

What is hydrocarbon?

Any member of a group of organic compounds comprised only of the atoms carbon (C) as well as hydrogen (H) (H). The carbon atoms bind together to create the compound's framework, as well as the hydrogen atoms connect to them in a variety of ways.

Petroleum as well as natural gas are mostly composed of hydrocarbons. They are used as fuels and lubricants, as well as raw materials to make polymers, fibers, rubbers, solvents, explosives, various industrial chemicals. The name of the hydrocarbon CH_3(CH_2)_6CH_3 is n-octane.

Therefore, the name of the hydrocarbon CH_3(CH_2)_6CH_3 is n-octane.

To know more about hydrocarbon, here:

brainly.com/question/28482314

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Answer is: n-octane.

Octane is the straight-chain alkane (an acyclic saturated hydrocarbon) with eight carbon atoms.

Carbons in octane have sp3 hybridization (carbon’s 2s and three 2p orbitals combine into four identical sp3 orbitals).

Orbitals in sp3 hybridization have a tetrahedral arrangement and form single (sigma) bonds.

Burning octane fuel is very fast chemical reaction, it happens in immediately.

Main products of the combustion of fossil fuels are carbon(IV) oxide and water.  

Chemical reaction: C₈H₁₈ + 25/2O₂ → 8CO₂ + 9H₂O; ΔH = -5500 kJ/mol.

Give the names of three exothermic and 3 endothermic processes?

Answers

Exothermic processes Endothermic processesmaking ice cubes melting ice cubesformation of snow in clouds conversion of frost to water vaporcondensation of rain from water vapor evaporation of water

Given the balanced equation representing a reaction: 2NaCl -> 2Na + Cl2 A 1170. gram sample of NaCl completely reacts, producing 460. grams of Na. What is the total mass of Cl2 produced?

Answers

Given the stoichiometric equation above and the amount of NaCl needed to produce the products, we can determine the amount of products produced. A 1170 gram NaCl using stoich produces 460 grams Na. This means the reaction makes a 100% conversion after. So, the amount of Cl2 produced from stoich is 709.61 grams.

Answer:

710.g

Explanation:

A 10.0-milliliter sample of NaOH(aq) is neutralized by 40.0 milliliters of 0.50 M HCl. What is the molarity of the NaOH(aq)?(1) 1.0 M (3) 0.25 M(2) 2.0 M (4) 0.50 M

Answers

The reaction equation of this is NaOH + HCl = NaCl + H2O. So the mol number of NaOH and HCl are the same. So we can get equation: 40*0.5=10*[NaOH]. (both side of equation is using the same unit of volume) [NaOH]=2.0 M. The answer is (2) 2.0 M.

Answer:2.0M

Explanation
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