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Ammonia (NH3) dissolved in water is heated in a beaker. If initially there had been 60 grams dissolved in 100 grams of water, what would happen if the temperature reached 90℃ and why? (AKS 6c DOK 2)

A.
The solution would become supersaturated and the ammonia would all remain dissolved .
B.
The solution would become saturated but the amount of ammonia dissolved would remain the same .
C.
about 50 more grams of ammonia would be able to dissolve as the solution has become unsaturated .
D.
about 50 grams of ammonia would come out of solution as the temperature caused the solubility to decrease .

Answer:

They are both building blocks

Explanation:

DNA builds up life while legos build things

Answer:

Sam's average speed  = 2.22 m/s

Explanation:

The average speed refers to the speed with which a distance is covered within a particular time duration. The average speed of a moving object can be obtained by summing up all the varying speeds as the object moves from one point to another, within a particular time frame.

Sams average speed can be calculated using this formula:

Average speed = distance / time

Distance covered = 2000 meters

Time taken to cover the distance = 9:15 am - 9:00 am = 15 minutes = 15 X 60 seconds = 900 seconds

Sam's average speed = 2000meters / 900 secs = 2.22 m/second

Answer: tell me

Explanation:

i do not no

In modern times, we know that the elements in a given group (also known as a family or column) have the same number of valence electrons, with ground state configurations having a consistent pattern, for instance:

F 1s2 2s2 2p5, Cl 1s2 2s2 2p6 3s2 3p5, Br 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5, etc.

Of course, the ground state configurations play a major role in determining how an element reacts and what compounds it forms. Thus, the elements in a given group have similar properties.

The structure of the table also predicts how the properties vary. For instance, atomic radius increases down a group as does metallic character.

Explanation:

Answer:

2200 degrees Fahrenheit

Explanation:

700°C to 1300C where's my points at

Answer:

I think you would pretty much get the answer wrong.

You won´t get full credit. sorry for your wrong test answer, :(

Explanation:

The correct answer would be copper and mercury do NOT react with hydrochloric acid.

Answer:

True

Explanation:

Generally makes sense.

Answer:

The structure of the atom.

Explanation:

The correct answer is - The structure of the atom.

Reason -

An atom is the smallest unit of matter that retains all of the chemical properties of an element.

Answer:

103 so easy so free dogwater

Explanation:

Mass percentage does not have any unit as numerator and denominator contains the same unit. The mass of  rock is 2.56×10⁶g when it contains 1.0 x 10³ kg of iron in it.

Mass percentage represents the the percentage of each element that is making a particular compound.

Mathematically,

Percentage of mass = (component’s mass ÷ total mass) x 100%

Percentage of mass of ferric oxide is =  78% by mass in rock

From this we can interpret the following

100 g of rock contains = 78gram ferric oxide

(100÷78)g of rock contains= 1 gram of ferric oxide

mass of iron in rock =1.0 x 10³ kg = 1.0 x 10⁶ g

(100÷78)×1.0 x 10⁶ g of rock  = 1.28×10⁶g of ferric oxide

now 1 mole of ferric oxide contains 2 atoms of iron, so the total mass of iron is 1.28×10⁶g ×2=2.56×10⁶g of iron.

Therefore the mass of  rock is 2.56×10⁶g when it contains 1.0 x 10³ kg of iron in it.

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Answer:

pretty sure they're called groups

Answer: When they do, they transfer some of their energy. The energy is transferred from particle to particle. It is sort of like a row of dominoes falling over. In this process, thermal energy moves through a substance. It can even move into other nearby substances. In Figure above, conduction occurs between particles of the metal in the pot. It also occurs between particles of the pot

Explanation:

Answer: a. 249.5 g/mol

b. 1.996 g

c. Measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve in water until the volume is 400 ml

Explanation:

Molar mass is the sum of atomic masses of all the elements present.

Thus molar mass of [tex]CuSO_4.5H_2O[/tex] = 1(63.5)+1(32)+4(16)+5(18) = 249.5 g/mol

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

To calculate the number of moles for given molarity, we use the equation:

[tex]\text{Molarity of the solution}=\frac{\text{given mass of solute}\times 1000}{\text {Molar mass of solute}}\times \text{Volume of solution in ml}}[/tex]

[tex]0.02mol/L=\frac{x\times 1000}{249.5g/mol\times 400}[/tex]

[tex]x=1.996 g[/tex]

c. We need to measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve it in water to make the volume 400 ml.

Answer:

the final reaction

Explanation:

a chemical reaction is caused from the two reactants

Answer:

To remove waste products

Explanation:

I think

Answer:

to remove waste products

Answer:

A

Explanation:

Just took the quiz

The irregularity of the chart means that, monitoring concentrations of pollutants has been ineffective.

The EPA is the environmental protection agency which takes care of the set limits of pollutamts that are released into the environment. The chart shows the monitoring of the concentrations of pollutants over a period of time.

We can see tat the chart is so irregular. The irregularity of the chart means that, monitoring concentrations of pollutants has been ineffective.

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Answer:

it disappeared loll jk

it obviously dried

well you may Mark me as brainliest

Answer:

The correct answer to your Question is B.

Explanation:

Hope you have a great day :)

The substance from the options that will dissolve most rapidly is : ( B ) Powdered sugar in hot water.

Increase in temperature, state of solute and volume will determine the rate at which solubility occurs. The powdered sugar is in less solid state when compared to sugar cubes and therefore will dissolve most rapidly in hot water than a sugar cubes in hot water.

Hence we can conclude that The substance from the options that will dissolve most rapidly is : ( B ) Powdered sugar in hot water.

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Answer:

2 electrons will move from magnesium to oxygen

Explanation:

Valence electrons have higher energy than the electrons in inner orbits, valence electrons participate in chemical reactions. A certain element's chemical characteristics can also be determined by the quantity of valence electrons that are present. The correct option is C.

The amount of electrons an atom must gain or lose in order to achieve the electrical configuration of the nearby noble gas or inert gas is known as valence. "Valence electrons" are described as "non-filled electrons in the outer shells."

The s and p electrons in the outermost shell are valence electrons. Core electrons are those found in the inner shell. Valence electrons are minuscule subatomic particles that we come across as we examine and investigate an element's atom. We can trace the valence electrons and forecast the sorts of bonds with the aid of Lewis structures.

'Mg' has two valence electrons and 'O' has six valence electrons. So 'Mg' loses its two electrons to 'O' to attain the octet.

Thus the correct option is C.

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Molten cryolite is used to dissolve the aluminum oxide is correct.

What is electrolysis?

Electrolysis is a process used to split molecules by passing an electric current through a solution containing ions. It works because the ions in the solution are attracted to the opposite charge of the electrodes in the electrolysis cell. The ions travel towards the electrodes and are either removed from the solution (oxidation) or released into it (reduction). This process is used in a variety of industries, such as metals refining, wastewater treatment, and electroplating.

The process of extracting aluminum from its ore, usually bauxite, involves electrolysis. In this process, the ore is dissolved in molten cryolite and an electric current is passed through it, leading to the oxidation of aluminum ions at the anode and the reduction of oxygen at the cathode. The aluminum is then extracted as a molten metal.

Therefore, option C is the correct answer.

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Answer:

C

Explanation:

Answer:

4s, 3d, 4p

Explanation:

(3d,4s,4p) and (4p, 3d, 4s) both are decreasing energy, while (4s,4p,3d) is incorrect order it should be (4s,3d,4p).

Answer:

Explanation:

In order to have a full shell it needs eight. It is easier to gain three electrons instead of losing five. Therefore phosphorus tends towards P3−

Answer:

In a solid, they're really close together and vibrate a LITTLE, in a liquid they're kinda close together but change movement because water will change shape depending on the container they're in. For gas they are spread far from each other and vibrate A LOT

Explanation:

Explanation:

The enzyme 's active site binds to the substrate. Increasing the temperature generally increases the rate of a reaction, but dramatic changes in temperature and pH can denature an enzyme, thereby abolishing its action as a catalyst. ... When an enzyme binds its substrate it forms an enzyme-substrate complex.

Answer:

13.7 degrees.

Explanation:

Answer:

the atomic number of the atom can be determine through the number of protons in the nucleus

The protons are usually the atomic number.

Answer:

Because you can see the stars everynight pretty much, but the planets you need a telescope for. Plus, the planets are moving everynight making night and day so they all move! :)

Explanation:

Hope this helps! Brainliest plz?

Answer:

Rainforest

Explanation:

rainforests tend to have high humidity, explaining why you always sweat there. and including high temps.

Answer:

There are a number of ways that you could investigate the effect of changing the temperature on the rate of a reaction in Chemistry. ... This includes using apparatus safely, and monitoring chemical changes.

Explanation:

There are three main methods of measuring rate:

measuring the volume of gas given off by a reaction over time.

measuring the loss of mass of a reaction over time when a gas is produced.