¿Cuál es la principal diferencia entre la idea de átomo de Dalton y la de Rutherford?

Answer:

When a saturated solution at a high temperature is cooled, why is the solution separated as a solid? When a saturated solution at a high temperature is cooled, inter molecular space between the molecules of the solution decreases. As a result, no more solute can remain in a solution separating out as a solid crystal.

Answer:

dark brown with a hint of purple

have a good day :)

Explanation:

Answer:

the answer is A 1s22s22p6

Answer:

Solar energy causes evaporation; uneven heating of the Earth causes air masses to move; Coriolis forces help storms to take shape; and gravity makes rivers flow downhill. Another relevant factor is the high heat capacity (or specific heat) of water.

Explanation:

hoped this helped;)

Answer: The molality of given acetic acid solution is 0.625 m.

Explanation:

Given: Moles of solute = 0.5 mol

Mass of solvent = 0.8 kg

Molality is the number of moles of solute present in a kg of solvent.

Therefore, molality of the given solution is calculated as follows.

[tex]Molality = \frac{moles}{mass of solvent}[/tex]

Substitute the values into above formula as follows.

[tex]Molality = \frac{moles}{mass of solvent}\\= \frac{0.5 mol}{0.8 kg}\\= 0.625 m[/tex]

Thus, we can conclude that the molality of given acetic acid solution is 0.625 m.

Answer:

7.82 g of Cu

Explanation:

2 moles of Al react to 3 moles of copper sulfate in order to produce 3 moles of copper and 1 mol of aluminum sulfate.

Firstly we determine the moles of reactant.

As copper sulfate is in excess, Al is the limiting.

2.75 g . 1mol /26.98g = 0.102 moles

Ratio is 2:3. 2 moles of Al, can produce 3 moles of Cu

So the 0.102 moles of Al will produce(0.102 . 3) /2 = 0.153 moles.

We convert moles to mass: 0.153 mol . 63.5g /mol = 9.71 g

That's the theoretical yield (100 % yield reaction)

We know that: (yield produced / theoretical yield) . 100 = percent yield

We replace:

(Yield produced / 9.71g) . 100 = 80.5  %

(Yield produced / 9.71g) = 0.805

Yield produced = 0.805 .  9.71g = 7.82 g

Answer:

No

Explanation:

Binary compounds contain only 2 distinct elements.

For example magnesium oxide MgO is a binary compound.

NaHCO3 contains 4 distinct elements.

Answer:

Increasing the solute

Explanation:

The simplest way to change the concentration would be to change the amount of solute or solvent in the solution. Increasing the solute would increase the concentration. Increasing the solvent would decrease the concentration. For instance, if your lemonade was too tart, you would add more water to decrease the concentration.

Answer:

A.) Warm Ocean Waters

Explanation:

Hurricanes usually originate within hotter climates but must have a direct or large body of water to form over. In this case, majority of the hurricanes reported originated over large bodies of water such as Oceans near the equator. This is so because with intense humidity and high pressured areas hurricanes began to collect vapor which begins to swirl in a spiral format. Many hurricanes in fact occur rather near the equator.

Fun Fact: Hurricanes usually occur among coastal lines located closer to the equator. Such as, within the US, hurricanes up north are considered to be quite rare given the usual cold environment in comparison to the southern states.

Answer:

4.214 × 10^23 molecules.

Explanation:

Number of molecules in a substance can be calculated by multiplying the number of moles in that substance by Avagadro's number, which is 6.02 × 10^23.

That is, no. of molecule = n × Avagadro constant

In this case, there are 0.7 moles of fructose. Hence;

number of molecules = 0.7 × 6.02 × 10^23

no. of molecule = 4.214 × 10^23 molecules.

volume.

The amount of space a material occupies is its volume.

Mass is measured using a scale. Volume is the amount of space matter takes up. Volume can be measured by multiplying the length, width, and height of an object, or by using a measuring cup and seeing how the measurement of water changes in a cup. Density is the amount of matter an object has in a certain space.

Answer:

Volume

Explanation:

Mass is measured using a scale. Volume is the amount of space matter takes up. Volume can be measured by multiplying the length, width, and height of an object, or by using a measuring cup and seeing how the measurement of water changes in a cup. Density is the amount of matter an object has in a certain space.

Answer:

2450 joules

Explanation:

The formula for potential energy is PE = m x g x h

m is the mass, in kg (50)

g is the acceleration due to gravity, in meters per second squared (9.8)

h is the height, in meters (5)

The problem gives m = 50, g = 9.8, and h = 5. Plug that into the formula and get the answer.

[tex]PE = mgh\\PE = (50) (9.8) (5)\\PE = 2450[/tex]

According to law of conservation of energy and substitution of values in formula gives,2540 joules as maximum kinetic energy.

According to law of conservation of energy, it is evident that energy  is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.Substitution in formula gives , PE=50×9.8×5=2540 J.

Thus, the maximum kinetic energy she can reach when she skis to the bottom of the slope is 2540 J.

Learn more about law of conservation of energy,here:

https://brainly.com/question/29775341

#SPJ7

Answer:

C

Explanation:

Brainliest

I tried my best

H2

n=m÷Mr

n=100×2

n=200 moles

Mole ratio

Mg : H2

1 : 1

x : 200

cross multiply= x=200

Mg

make m the subject

m=n×Mr

m=200×24.305

m=4861 g

Answer:

Según el científico inglés John Dalton, los átomos son esferas elásticas e indivisibles. Así, según él, el átomo es el bloque de construcción más pequeño de la materia. Es homogéneo e indivisible, y todos los átomos de un elemento químico dado son idénticos (es decir, tienen el mismo conjunto de propiedades).

Aunque se descubrió a finales del siglo XIX que los átomos están hechos de partículas aún más pequeñas y pueden sufrir transformaciones, y que los átomos de un elemento dado pueden diferir ligeramente entre sí (isótopos), la teoría de Dalton fue la base para el desarrollo de la tecnología química moderna.

Answer:

deflection,Coriolis effect

hope this helps

Answer:

Matter

Explanation:

It has mass and it takes up space

Answer:

[tex]\boxed {\boxed {\sf 421,786.7818 \ mol \ H_2O}}[/tex]

Explanation:

We are asked to convert from molecules of water to moles.

1 mole of any substance contains the same number of particles (atoms, molecules, formula units, etc). This is Avogadro's Number: 6.022*10²³. In this problem, the particles are molecules of water.

Use Avogadro's Number to make a ratio.

[tex]\frac {6.022 *10^{23} \ molecules \ H_2O}{1 \ mol \ H_2O}[/tex]

Multiply by the number of molecules given: 2.54 *10²⁹

[tex]2.54 *10^{29} \ molecules \ H_2O \times \frac {6.022 *10^{23} \ molecules \ H_2O}{1 \ mol \ H_2O}[/tex]

Flip the ratio so the units of molecules of water cancel.

[tex]2.54 *10^{29} \ molecules \ H_2O \times \frac {1 \ mol \ H_2O}{6.022 *10^{23} \ molecules \ H_2O}[/tex]

[tex]2.54 *10^{29} \times \frac {1 \ mol \ H_2O}{6.022 *10^{23} }[/tex]

Condense the problem into 1 fraction.

[tex]\frac {2.54 *10^{29} }{6.022 *10^{23} }\ mol \ H_2O[/tex]

[tex]421786.7818 \ mol \ H_2O[/tex]

2.54 *10²⁹ molecules of water are 421, 786.7818 moles of water.

Answer: In Arizona, climate change is already making deadly heat waves, droughts and wildfires across the state worse. These impacts have real costs on Arizonans' health and economy, including heat-related deaths, higher electricity bills, crop losses and more.

Explanation:

https://www.edf.org/climate/costofinaction- this is where I gathered this info.  Not mine.  But I hope it helps!

Answer:

D. pKa × pKb = 1 × 10-14

Explanation:

hope this helps, if not, give me time to edit

Answer:

B. Ka × Kb = 1 × 10-14

Explanation:

yw

Answer:

+2

Explanation:

the atom will acquire the noble gas configuration if it loses 2 electrons, becoming a divalent cation

Answer:  If a reaction produces a gas such as oxygen or carbon dioxide, there are two ways to measure the reaction rate: using a gas syringe to measure the gas produced, or calculating the reduction in the mass of the reaction solution.

Explanation:

https://courses.lumenlearning.com/introchem/chapter/measuring-reaction-rates/#:~:text=If%20a%20reaction%20produces%20a,mass%20of%20the%20reaction%20solution.

This is the site I got it from.  I hope this helps.

Answer:

metallic bonding

Explanation:

Metallic bonding is bonding where electrons exist as "sea of electrons" meaning they can go anywhere in the structure and are not localized in specific place like covalent bonds are sometimes.

Answer:

Its the second one i think

Explanation:

Coz liquid can move faster then a solid obviously :)

Answer:

Butene would have 4 carbon atoms and a double bond.

Explanation:

The chemical formula for butene is C[tex]_4[/tex]H[tex]_8[/tex]

Here is an image of it.

Answer:

we have

But :4

bond :ene :2

So

Butene would have _4_ carbon atoms and a _2_ bond