Two children bring home a salt-water fish for their new fish tank. The children are eager to put their fish into the new fish tank, but have to
create a salt water solution to fill the tank first. The children plan to compete to see whose solution will be finished first.
Particle Size of Salt
Temperature of Solvent
Level of Agitation
Solution A
Sea salt (small clumps)
Cold water
Slow stirring
Solution B
Granular salt (tiny grains)
Hot water
Fast stirring
What do you believe the outcome will be from these solutions?
O A Solution A will take less time to dissolve, because gently stirring will allow it to combine more evenly
OB Solution will take less time to dissolve, because hot water will cause some of the salt to evaporate.
O c Solution A will take longer to dissolve and might have some undissolved salt remaining at the bottom of the solution due to the low
temperature.
OD Solution will take longer to dissolve and might have some undissolved salt remaining at the bottom of the solution due to the
high temperature

Answer:

Line form is influenced by how fast we are writing and the pressure and also what writing instrument is used

Answer:

All carbon atoms can be connected to a continuous chain in the straight-chain alkane. In alkanes of a branched-chain, all carbon atoms cannot be connected to a continuous chain as a branch or side chain is part of the carbon chain.

Explanation:

Answer:

4Hg+2O2=4HgO

four Mercury + four oxygen

Answer:

the solution is acidic as its ph has already exceeded the neutral level

[tex]1.1 X 10^-9 M[/tex] is the [H] in a solution with a pH of 9.92.

pH is the quantitative measure of the acidity or basicity of aqueous or other liquid solutions.

The pH of a solution is usually found by the following expression:

pH=-log [[tex]H^+[/tex]]

Therefore, to find the concentration of [tex]H^+[/tex] we can rearrange this expression and thus,

= [[tex]H^+[/tex]] = [tex]10^-^{pH}[/tex]

= [[tex]H^+[/tex]] = [tex]10^-^{9.92}[/tex]

=[tex]1.1 X 10^-9 M[/tex]

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Answer:

B

Explanation:

Answer:

answer number 3? ac

Explanation:

Answer:

Option A (9.0) is the correct alternative.

Explanation:

The given values are:

Molarity,

= 1.5 M

Volume,

= 6000 mL

or,

= 6 L

As we know,

⇒ [tex]Molarity=\frac{Moles}{Volume}[/tex]

or,

⇒ [tex]The \ moles \ of \ NaCl=Molarity\times Volume[/tex]

By putting the values, we get

                                     [tex]=1.5\times 6[/tex]

                                     [tex]=9 \ mol[/tex]

Explanation:

which graph, please theres no graph

Answer:

1)Reactants

2)Light

3)An item that can increase reaction rates

4)Reactants must collide with each other

Less molecules lower the chance for collisions

The more collisions there are the higher the reaction rate

Answer:

It means that for a gas at a constant temperature, pressure × volume is also constant. So increasing pressure from pressure1 to pressure2 means that volume1 will change to volume2, providing the temperature remains constant.

Answer:

its D

Explanation:

the principal quantum number, n, describes the energy of an electron and the most probable distance of the electron from the nucleus. In other words, it refers to the size of the orbital and the energy level an electron is placed in. The number of subshells, or l, describes the shape of the orbital.

Answer: placing coefficients

Explanation: In a balanced chemical equation, the total number of atoms of each element present is the same on both sides of the equation. Stoichiometric coefficients are the coefficients required to balance a chemical equation. These are important because they relate the amounts of reactants used and products formed.

Answer:

A:Even if one or more fast steps occur in a reaction, the overall reaction cannot proceed any faster than the slowest step.

Answer:

A

Explanation:

Edge 2020

hope this helps :)))))

Answer:

There are many effects of radiation to the human body. (if you watch the 100, you'll see what happens)

Exposure to very high levels of radiation, such as being close to an atomic blast, can cause acute health effects such as

1. weakness

a/ fatigue,

b/ fainting,

c/ confusion.

2.Bleeding from the nose,

a/ mouth,

b/ gums,

c/ rectum

3. Bruising,

a/ skin burns,

b/ open sores on the skin,

c/ sloughing of skin.

4. Dehydration.

5. Diarrhea, bloody stool.

6. Fever.

7. Hair loss.

8. Inflammation of ex

Answer:

A.

Explanation:

melting of ice will increase water in oceans due to which water in oceans will increase and salinity will decrease. hence, melting of ice caps near the north pole affects salinity of the ocean

Answer:

Potential energy

Explanation:

Hanging objects have (gravitational) potential energy

Answer:

Explanation:

Every cell in the monkey's body (and ours) is constantly converting the stored solar energy in glucose into work and heat. The work is used to carry on cell processes like growing, reproducing, moving molecules around, and getting rid of waste. The heat is a byproduct of the fuel "burning" process.

Answer:

For pure water, the values of [H3O+] and [OH-] are equal and thus their values are both 1.0 x 10-7. If there is an equal amount of acid and base present in any solution, the solution is called "neutral" and the pH of the solution is 7. ... The sum of the pH and pOH must always equal 14.

Explanation:

Answer:

First Part: branched chain, cycloalkane, straight chain

Second Part: straight chain, branched chain, cycloalkane.

Explanation:

Edg 2021

Answer:

Explanation:

Answer:Predatorrrrrrrrrrrrrrrr

Pls gimme Brainliest

Answer:

I think it's 21.5 *C

Explanation:

Answer:

Addition polymers are formed when monomer units join each other in a process that involves the rearranging of electrons in double or triple bonds in the monomer. The polymer is the ONLY product formed.

EX:C=C + C=C + C=C - ·C-C-C-C-C-C·

Ethene(ethylene) monomers -> part of polyethene

Explanation:

Answer: An insulator would be made out of material unable to conduct electricity due to lack of fluid movement for electrons, such as rubber. Rubber properties not only prevents them from freely moving, but also helps electrons stay tightly bound to each other.

Hope this helps ^_^

Answer:

The energy needed is 45.7659 kJ

Explanation:

The given mass of the ice, m = 15 g

The initial temperature of the ice, T₁ = -4°C

The temperature

The final temperature, T₂ = 115°C

The specific heat capacity of ice, c₁ = 2.09 J/(g·°C)

The latent heat of ice, l₁ = 334 J/g

The heat capacity of water, c₂ = 4.184 J/(g·°C)

The latent heat of vaporization, l₂ = 2260 J/g

The specific heat of steam, c₃ = 2.02 J/g

Therefore, we get the energy needed, ΔQ, as follows;

ΔQ = m·c₁·(T₂ - Tₐ) + m·l₁ + m·c₂(Tₓ - Tₐ) + m·l₂ + m·c₃·(T₂ - Tₓ)

Where;

Tₐ = The melting point temperature of water = 0°C

Tₓ = The boiling point temperature of water = 100°C

∴ ΔQ = 15×2.09×(0 - (-4)) + 15 × 334 + 15×4.184×(100 - 0) + 15×2260 + 15×2.02×(115 - 100) = 45,765.9

The energy needed, ΔQ = 45,765.9 J = 45.7659 kJ.

Answer:

xiu I nnn ivy u

Explanation:

shin deer high ed residency by uh uh to

Answer:

All of them I think

Explanation:

STEM is science, technology, engineering and math, and all of them use that in some aspect

Answer:

The gravitational pull of the moon and the rotational force of the Earth cause tides to rise and fall across the planet. The species living in coastal areas most affected by changing tides have unique ways of surviving.

So, the answer is B.

Answer:

Option A

Explanation:

Leguminous plants like pulses etc. have root nodules comprising of rhizobacterium which live in a symbiotic relationship with the roots of the plant and in turn fix the nitrogen in the soil in the roots of the leguminous plants.

Hence, option A is correct

Answer:A

Explanation:

If the KHP has not been dried before weighing, the calculated molarity of the NaOH would be higher than the actual value, since water is included in the apparent mass of KHP.

The KHP is Potassium hydrogen phthalate. It is commonly used as a primary standard in pure form for sodium hydroxide titrations because it is stable in air making it easy to weigh.

However, if KHP is not dried very well, the mass of water is included as part of the mass of KHP and this will make calculated molarity of KHP to be higher than the actual value.

Again, the reaction between KHP and NaOH has a 1:1 molar ratio so if the molarity of KHP is higher than its actual value, the molarity of the NaOH would also be higher than the actual value.

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Answer:

0.0125 moles of HCl

Explanation:

(0.50 mol/L)(0.025 L) = 0.0125 moles of HCl