A concentrated solution contains a large proportion of solute relative to the solvent. true or false

Answers

Answer 1

Answer:

The statement “Aconcentrated solution contains a large proportion of solute relative to thesolvent.” is true. It means that the amount of solute molecules present in thatsolution is greater than the amount of solvent molecules present in thatsolution.

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A student blows up a ballon and then places it in a very cold freezer the ballon shrunk after hours why!?

Answers

Temperature is directly related to the speed of the molecules such that as the temperature decreases, so does the speed of the molecules. When the balloon was placed in the freezer, the temperature plummeted and so the molecules moved less. Due to this lack of movement, less space was used by the balloon so it shrunk.

Determine the number of neutrons in an atom of Si-29

Answers

15 as 29 (atomic mass-number of neutrons and protons) - 14 (atomic number-number of protons)

Which change occurs during a nuclear fission reaction? (1) Covalent bonds are converted to ionic bonds.
(2) Isotopes are converted to isomers.
(3) Temperature is converted to mass.
(4) Matter is converted to energy

Answers

Answer;

Matter is converted to energy

Explanation;

Nuclear fission is a type of nuclear reaction in which a nuclei of an atom splits or breaks down into two or more smaller nuclei.
It involves subdivision of heavy nucleus of an atom such as Uranium into two or more fragments which has almost the same equal mass.
Nuclear fission is accompanied by release of large amount of energy, thus we can say that matter is converted to energy.

Matter is converted to energy

The central core of an atom is called thea. reactor vessel.
b. neutron.
c. proton.
d. nucleus.

Answers

Answer:

The central portion is called neutron.

Explanation:

An atom has a central part known as nucleus and outer shells.

The central nucleus contains protons (the positively charged sub atomic particle) and neutrons (the neutral sub atomic particle).

The outer portion has negatively charged sub atomic particle known as electrons.

The atomic number of an element is the number of protons present in the nucleus.

Answer:

The Answer is Nucleus

Explanation:

The Nuleus is the brain of the atom always like the "boss"

A gas that extinguishes a flame is hydrogen. true or false

Answers

This is true because it reacts with oxygen

Elements have been discovered with up to how many energy levels

Answers

20 because each row has 20 columns

Other Questions

Which of the following are examples of cations? A. SO42- B. HCO3- C. Cl- D. HPO42- E. Ca2+

Could volume by displacement be used to determine the volume of a lump of rock salt? Explain would be nice

During an investigation, a student determines that a copper sample has a density of 8.10g/mL. What is the student's percent error if the a ccepted density for copper is 8.96g/mL?

At 700 K the equilibrium constant KC for the reaction between NO(g) and O2(g) forming NO2(g) is 8.7 × 106. The rate constant for the reverse reaction at this temperature is 0.54 M–1s–1. What is the value of the rate constant for the forward reaction at 700 K?