what does it mean for something to be dissolved in water

A- it is submerged in water molecules

B-it is stirred in the water molecules

C- it is surrounded by water molecules

D-it has water molecules added to it

Answer:

Choice A: Approximately [tex]5.23 \times 10^{-29}[/tex] joules.

Explanation:

Apply the famous mass-energy equivalence equation to find the energy that correspond to the [tex]\rm 5.81\times 10^{-29}[/tex] kilograms of mass.

[tex]E = m \cdot c^{2}[/tex],

where

The speed of light in vacuum is a constant. However, finding the right units for this value can simplify the calculations a lot. What should be the unit of [tex]c[/tex]?

The mass given is in the appropriate SI unit:

Mass is in kilograms.

Thus, proceed with the speed of light in SI units. The SI unit for speed is meters per second. For the speed of light, [tex]c \approx \rm 3.00\times 10^{8}\;m\cdot s^{-1}[/tex].

Apply the mass-energy equivalence:

[tex]\begin{aligned} E &= m \cdot c^{2} \\ &= \rm 5.81\times 10^{-29}\; kg \times {\left(3.00\times 10^{8}\; m\cdot s^{-1}\right)}^{2}\\ &\approx \rm 5.23\times 10^{-12}\;kg\cdot m^{2}\cdot s^{-2} \end{aligned}[/tex].

The unit of energy is not in joules. Don't be alerted. Consider the definition of a joule of energy. One joule is the work done on an object when a force of one newton acts on the object in the direction of the force through the distance of one meter. (English Wikipedia.)

[tex]\rm 1\; J = 1\; N \times 1\; m[/tex].

However, a force of one newton is defined as the force required to accelerated an object with a mass of one kilogram (not gram) at a rate of one meter per second squared. (English Wikipedia.)

[tex]\begin{aligned}\rm 1\; J &= \rm 1\; N \times 1\; m\\ & = \rm \left(1\; kg\times 1\; m\cdot s^{-2}\right)\times 1\; m\\ &= \rm 1\; kg \cdot m^{2}\cdot s^{-2}\end{aligned}[/tex].

In other words, the mass defect here is also [tex]\rm 5.23\times 10^{-12}\; J[/tex].

Answer: 5.23*10^-12 j

Explanation:

Answer:

By increaing the size of container

Explanation:

Gay-Lussac Law:

This law states that pressure of the gas is directly proportional to the temperature of the gas at constant volume.

Mathematically,

[tex]\frac{P_1}{T_1}=\frac{P_2}{T_2}[/tex]  (at constant volume )

where,

[tex]P_1\text{ and }T_1[/tex] are the initial pressure and temperature of the gas.

[tex]P_2\text{ and }T_2[/tex] are the final pressure and temperature of the gas.

So in order to decrease the pressure of the gas in container decrease the temperature of the gas present in the container due to which pressure of the gas will also get decrease as per as Gay-Lussac law.

The Answer is 9460 kJ (C)

The other answer is cap

Answer:

When you stir a solute, more surface area of the substance is exposed to the solvent.

Explanation:

The higher the surface area in relation to volume is, the faster a solute will dissolve.

Hope it helps

Answer:

Try it and see. My guess is that stirring would increase the rate of dissolution.

Explanation:

So get 2 beakers, fil them up with 10 g salt, and add 100 mL water. Put a magnetic follower in one of the beakers, place it on a stirrer and let it rip. Measure the time, and see if the unstirred beaker still has solute on the bottom.

Lewis acid is a chemical species that is able to accept an electron pair. In this case the silver ion Ag[tex]^{+}[/tex] is a lewis acid because it accepts a lone pair electrons form the ammonia :NH[tex]_{3}[/tex]

Answer:

Your answer is Ag+ have a good day

Explanation:

A compound is a substance formed when two or more different elements bond together chemically. In the options provided, 'a substance made of two oxygen atoms for each carbon atom' describes a compound, specifically carbon dioxide (CO2).

In chemistry, a compound is a substance formed when two or more different elements are bonded together. For the options provided in your question, the choice 'a substance made of two oxygen atoms for each carbon atom' most accurately describes a compound. This describes the compound carbon dioxide (CO2), where each molecule includes one carbon atom bonded to two oxygen atoms. Remember, a substance that consists of two or more elements that are chemically combined is regarded as a compound.

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This is how a reaction equation is set up:

Reactants ------> Products

This means that the answer is B) Products are located to the right of the arrow (aka the yield)

Hope this helped!

~Just a girl in love with Shawn Mendes

Explanation and answer:

The molar volume of a gas is 22.4 L at 0 deg. C.

So the molar mass of the gas is, by proportion,

0.16 g * (22400 mL)/(240 mL) = 14.93 g

The molar mass of (CH4)n = 12+4(1) = 16.

So n = 15.93/16 = 1, or the molecular formula is CH4.

Note: The temperature at which the volume was observed was not given.  If 240 cm^3 was observed at 20 deg.C, then the volume at 0 deg.C would be

V=240*(273+0)/(273+20) = 223.6

The molar mass = 0.16*22400/(223.6) = 16.03

which gives n = 16/16.03 = 1 again, but more accurately.

When 0.5113 g of ammonia react with excess oxygen, -6.795 J of heat are released.

Enthalpy, a property of a thermodynamic system, is the sum of the system's internal energy and the product of its pressure and volume.

4 NH₃(g) +5 O₂(g) ⇒ 4 NO(g) + 6 H₂O   ΔH = -905.4J​

The molar mass of NH₃ is 17.03 g/mol.

0.5113 g × 1 mol/17.03 g = 0.03002 mol

According to the thermochemical equation, -905.4 J are released upon the reaction of 4 moles of ammonia.

0.03002 mol × (-905.4 J/4 mol) = -6.795 J

When 0.5113 g of ammonia react with excess oxygen, -6.795 J of heat are released.

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Answer:

the above

Explanation:

heat the metal until it melts

react it with o2

stretch it

react it with acid

Answer:alloy

Explanation:

He can use alloy to change the metal.An alloy is the mixture of two or more metal.

Answer:

(c) They come apart or lose their shape

Explanation:

Heat and temperature disrupt the attractions of the groups in the side chains that give the protein its characteristic shape.

(a) and (b) are wrong. The proteins do not lose their amino acids or their sequence.

(d) is wrong. The amino acids do not change into fatty acids.

Answer:

Magma

Explanation:

Magma is part of molten rock at mid-ocean ridges.

Hope this helps!

Answer:

it can be

Explanation:

because the concentration of a solution will not affect the volume of it

Answer:

It is possible for the object/food to have been infected/contaminated

Explanation:

If you where to be eating while doing chemistry, it is possible that some of the things you are experimenting with might have gotten on some of the things around, or come off your hands onto the thing.

Answer:

While performing chemistry experiments one should not eat food while performing the experiments as harmful chemicals can be ingested into mouth along with the food.

There are various types of chemical and substances present in lab which might be harmful for person performing experiment.

One can also get disturbed and might spill chemicals on himself which can be harmful.

Answer:

This solution is neutral.

Assumption: the solution is under room temperature, such that [tex]K_w = 10^{-14}[/tex].

Explanation:

For a solution in water,

[tex]\mathrm{[H_3O^{+}] \cdot [OH^{-}]} = \mathnormal{K_w}[/tex].

In other words, if [tex]K_w[/tex] is given, knowing the concentration (in [tex]\rm M[/tex], or equivalently [tex]\rm mol\cdot L^{-1}[/tex]) of either [tex]\rm H_3O^{+}[/tex] or [tex]\rm OH^{-}[/tex] will imply the concentration of the other ion.

Under room temperature,

[tex]K_w \approx 10^{-14}[/tex].

The question states that for this solution,

[tex]\mathrm{[H_3O^{+}]} = \rm 1.00\times 10^{-7}\; M[/tex]

As a result, the concentration of [tex]\rm OH^{-}[/tex] in this solution will be

[tex]\displaystyle \frac{K_w}{\mathrm{[H_3O^{+}]}} = \frac{10^{-14}}{1.00\times 10^{-7}} = 10^{-7}[/tex].

In this case, [tex]\rm [H_3O^{+}] = 10^{-7}\; M = [OH^{-}][/tex]. In other words, this solution is neutral.

Answer: The answer is D

Explanation:

In a chemical equilibrium, the forward and reverse reactions occur at equal rates, and the concentrations of products and reactants remain constant. A catalyst speeds up the rate of a chemical reaction, but has no effect upon the equilibrium position for that reaction.

In a chemical reaction at equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. This results in constant concentrations of the reactants and products, even though individual molecules continue to react.

The question is dealing with the concept of chemical equilibrium in chemistry. First, let's understand that this condition refers to a state where the concentrations of the reactants and products remain constant over time. Specifically, the correct option is 'd'. the rate of the forward reaction equals the rate of the reverse reaction'. This means that for a reaction at equilibrium, while there may still be reactants and products present, and reactions are still happening, they are occurring at the same rate in both directions. Therefore, there is no net change in the concentrations of the reactants or products, even though individual molecules are continually reacting. This does not mean that there are no reactants left in the system (a), all the products are getting used up (b), or that the amount of the reactant is constantly decreasing (c). It strictly implies that the forward and reverse reactions have the same rate.

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Answer:

the 2 liter contains more soda

Answer:

Depending on the definition of "standard" conditions, the volume of O₂ required here will be either

Explanation:

Relative atomic mass data from a modern periodic table:

How many moles of iron Fe in that 35.8 gram of iron metal?

[tex]M(\mathrm{Fe}) = \rm 55.845\; g\cdot mol^{-1}[/tex].

[tex]\displaystyle n = \frac{m}{M} = \rm \frac{35.8\; g}{55.845\; g\cdot mol^{-1}} = 0.641060\; mol[/tex].

How many moles of oxygen gas will be required?

Consider the ratio between the coefficient of Fe and that of [tex]\mathrm{O_2}[/tex] in the equation:

[tex]\displaystyle \frac{n(\mathrm{O_2})}{n(\mathrm{Fe})} = \frac{3}{1} = 3[/tex].

As a result,

[tex]\displaystyle n(\mathrm{O_2}) = n(\mathrm{Fe}) \cdot \frac{n(\mathrm{O_2})}{n(\mathrm{Fe})} = \rm 0.641060\; mol \times 3 = 1.92318\; mol[/tex].

What's the volume of that [tex]\rm 1.92318\; mol[/tex] of oxygen gas under STP?

One mole of an ideal gas occupies a volume 22.4 Liters under STP (or 22.7 liters in certain textbooks.) The volume of an ideal gas is directly related to the number of moles of particles in this gas. Assume that oxygen acts like an ideal gas under STP. As a result, 1.92318 moles of oxygen will occupy a volume of either

[tex]\rm 1.92318\; mol \times 22.4\; L\cdot mol^{-1} = 43.1\; L[/tex] or

[tex]\rm 1.92318\; mol \times 22.7\; L\cdot mol^{-1} = 43.7\; L[/tex].

Answer:

d) when it meets the test of repeated expected experimentation.  

Explanation:

A hypothesis is a guess based on observation in the the behavior of nature. This guess is used to formulate the relevant experiments and when the experimental results consistently meet the expected outcomes then the hypothesis graduates into a theory. Theories form the basis of many fields in science as they try to explain the behavior of nature.  

Answer:

d) when it meets the test of repeated expected experimentation.  

Explanation:

hope this helps

Answer:

Your answer is A. far less mass than either a proton or a neutron

I am 10000% sure  this is correct

hope this helps ya

:D plz mark me brainiest

Answer:

the answer is a

Upon heating copper(II) nitrate, black-colored copper(II) oxide forms as a solid residue; brown fumes of nitrogen dioxide are released, and oxygen gas is also evolved.

When copper(II) nitrate is heated, you would observe the compound decomposing into copper(II) oxide (CuO), nitrogen dioxide (NO₂), and oxygen (O₂). Copper(II) oxide is a solid with a black color and would be visible as a residue. Nitrogen dioxide is a gas with a characteristic brown color, which would be noticeable as brown fumes evolving from the reaction mixture.

Additionally, you might see the release of oxygen gas, though it is colorless and would not be visibly noticeable without testing for its presence (such as by introducing a glowing splint, which would re-ignite in the presence of oxygen).

Answer:

142 g / mol

Explanation:

Molar mass of Na=23

S=32

O=16

Total Molar mass: 23*2+32+16*4

=142g / mol

Answer:

=154.8 J

Explanation:

The rise in temperature is contributed by the change in temperature.

Change in enthalpy = MC∅,  where M is the mass of the substance, C is the specific heat capacity and ∅ is the change in temperature.

Change in temperature = 100.0°C-20.0°C=80°C

ΔH=MC∅

The specific heat capacity of gold= 0.129 J/g°C

ΔH= 15.0g×0.129J/g°C×80°C

=154.8 J

Answer:

C₂H₂O₃

Explanation:

The empirical formula of a compound is derived bu finding the whole ratios of the constituent elements.

In succinic acid, the ratios of carbon to hydrogen to oxygen is calculated as follows:

% mass

Carbon- 40.60

Hydrogen - 5.18

Oxygen - 54.22

RAM

Carbon -12

Oxygen - 15.994

Hydrogen -1.008

No of moles elements in the compound

Carbon = 40.60/12=3.3833

Oxygen = 54.22/15.994= 3.39

Hydrogen= 5.18/1.008 = 5.1389

Mole ratios of the individual elements we divide by the smallest value of the number of moles.

Carbon: Hydrogen : Oxygen

3.3833/3.3833:3.39/3.3833:5.1389/3.3833

=1:1:1.5

We can multiply the value by 2 to get the whole number ratio.

=2:2:3

The empirical formula will be:

C₂H₂O₃

Answer:

46.85kJ

Explanation:

The specific latent heat of vaporization of water is =2.3 x 10⁶ J kg-1.

The specific heat capacity of water = 4.2×10³J/kgK

The latent heat of fusion of water= 3.36×10⁵ J/kg

The specific heat capacity of ice=2.108×10³ J/kgK

The heat of lost due to cooling of ice is calculated as follows by adding the heat lost during condensation of water vapor to the heat lost during cooling the water to freezing point plus the heat lost during freezing plus the heat lost during cooling the ice to -32.0°C

=MLv+MCΔT(water)+MLf+MCΔT(ice) where Lv=latent heat of vaporization of water , and Lf is the latent heat of fusion ice.

=(0.015kg×2.3 x 10⁶ J/kg)+(0.015kg×4.2×10³J/kgK×100K)+(0.015kg×3.36×10⁵ J/kg)+(0.015kg× 2.108×10³ J/kgK)×32K

=34500J+6300J+5040J+1011.84J

=46851.84J

=46.85kJ

Answer:

1.24274 miles; 3.2186818249471 kilometer; 3218.6818249471002673 meters; 321868.18249471002491 centimeters; 3218681.8249471001327 millimeters; 3218681824.9471006393 micrometers; 3218681824947.1000977 nanometers;  2.18722240048120917 yards; 6.56166720144 feet; 7.87400064173235 inches; 1.079911535 nautical mile.

Answer:

2000 meters

Explanation:

because 2 kilometers equals 2000 meters

12×C(NaOH)=16×0.15

C(NaOH)=(16×0.15)÷12=0.2

Answer: 2) 0.20M

Answer:2C12

Explanation:because if u divide the the equation by 2 u well get the same answer you can multiply but that will take longer with the invisible zeros and stuff like that but the answer is 2c12 and on the real FSA u can pull out ur phone and cheat just make sure the teacher is not watching just playing with you DONT DO THAT YOU WILL GET IN SERIOUS TROBLE KIDS DO NOT DO THIS KN THE REAL DAY OF THE FSA PLEASE DONT DO IT YOU WILL GET IN SERIOUS TROUBLE WELL THATS IT FOR TODAY SO HAVE A GREAT DAY THIS IS TO PUT PRESSURE ON YOU

Answer:

Diffraction

Explanation:

When light enters water at an angle, it is bent downward by diffraction. However, our brain sees the underwater image as if it were on a straight line.

Thus, the bottom of the pool appears to be shallower than it actually is.

A is wrong. If all the light were reflected from the surface, we wouldn't be able to see the person's feet.

B is wrong. if all the light rays interfered with each other, we wouldn't be able to see anything.

D is wrong. Refraction is the bending of light as it passes the edge of an object.

Answer:

refraction

Explanation:

Answer:

Mass and distance affect the gravitational attraction between objects.

Explanation:

Answer:

Its Mass

Explanation: