What does the reaction rate measure?

CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)

The carbon and silicon have in common that they belong to the same column (family), therefore they have the same number of total electrons. So, option B is correct.

Carbon's closest analogue is silicon. Silicon and carbon are both tetravalent atoms that primarily form covalent (non-ionic) compounds. However, aside from the fact that both elements "can form four covalent bonds," there is surprisingly little in common between them.

Carbon has an atomic number of 6 and an electronic configuration of 2, 4. Silicon has an atomic number of 14 and an electronic configuration of 2, 8, 4. Because both elements have the same number of valence electrons, they are classified as being in the same group.

Thus, option B is correct.

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Answer:

Genes on the X chromosome are said to be X-linked. X-linked genes have distinctive inheritance patterns because they are present in different numbers in females (XX) and males (XY). X-linked human genetic disorders are much more common in males than in females due to the X-linked inheritance pattern.

Explanation:

Explanation:

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll.

Answer:

chloroplasts

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll

Explanation:

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Answer:

Decomposition of ores produces separated element.

Answer: it’s b, d, and e

Explanation: i just did it, hope this helps :)

Answer:

Noble gases have very stable electron configuration and does not need to gain electrons, only when they gain energy. 1) For example, krypton is a chemical element with symbol Kr and atomic number 36, which means it has 36 protons and 36 electrons.

Answer: I think it’s B, The highest occupied s and p sub levels are completely filled.

Explanation:

Answer:

I'm pretty sure that liquid moves by vibration

Explanation:

I asked my cousin

Answer:

The answer will be ：

In year 1869

Russian scientist named Dmitri Mendeleev

Chart called Mendeeleves periodic table

increasing atomic masses

physical and chemical properties.

Hope this Helps

Best of luck ！！

Answer:

The answer is B

Explanation:

honestly do

Answer:

epic

Explanation:

hakuna matata

Answer:

c. Underground tunnels

Explanation:

Yes, water below your feet is moving all the time, but, no, if you have heard there are rivers flowing below ground, that is not true. Water moves underground downward and sideways, in great quantities, due to gravity and pressure. Eventually it emerges back to the land surface, into rivers, and into the oceans to keep the water cycle going.

Note: This section of the Water Science School discusses the Earth's "natural" water cycle without human interference.

The steps in the water cycle that carries water out of the ocean into a freshwater lake are rivers and streams.

The water cycle is used to describe the movement of water in the ecosystem. It involves the various processes through which water can move in the universe.

The steps in the water cycle that carries water out of the ocean into a freshwater lake are rivers and streams.

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Answer: Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Hopefully i helped

Explanation:

Answer: Alkaline-earth metal

Explanation:

Answer:

On a roller coaster, energy changes from potential to kinetic energy and back again many times over the course of a ride. Kinetic energy is energy that an object has as a result of its motion. Potential energy is the energy an object has as a result of its position

Explanation:

Answer:

406m/s

Explanation:

Speed = distance ÷ time

Answer:

406 m/s

Explanation:

Divide 325,000 meters by 800 and 800 seconds by 800 (because we are trying to find the speed in meters per second.

325,000÷800 = 406.25 meters

800÷800 = 1 second

≈ 406 m/s

Answer:

shear adhesion

Explanation:

edge

Shear adhesion sticks best when it is pulled down parallel to the surface.

Shear adhesion is defined as the ability  of tape due to which it resists the static forces which are applied in same plane as in backing.It is usually expressed in terms of time required  by a given weight for an amount of tape to become loose  from a vertical plane.

Molecular weight between two entanglements is the controlling factor of shear adhesion. Shear adhesion is affected by the following parameters which areas follows:

1)Tg of adhesive - Shear adhesion increases as Tg rises up to a certain temperature which is less than the room temperature.

2)  Tan delta  minimum value of adhesive- It is found that shear adhesion improves by an increase in tan delta minimum value.

3)Adhesive polarity- It is an important factor which affects adhesion  such as tack,peel and shear.Adhesion performances are improved by introducing polar ingredients in the formulation.

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Answer:

true

...................

Answer:

Copper(i) nitrate

Explanation:

That is the correct name.

Answer:

Molecular Formula

Explanation:

Answer:

Eurkaryote... sorry if i wrong

Explanation:

Answer:

A. Enthalpy of the reaction

Explanation:

A Thermochemical equation is a balanced stoichiometric chemical equation that indicates the absorption or release of heat in addition to the reactants and products involved in the chemical reaction. The amount of energy available for conversion into heat is represented by ΔH, a this term which stands for the enthalpy change, ΔH.

The Enthalpy of Reaction or Heat of Reaction is the amount of energy in the form of heat transferred during a chemical reaction that occurs at a constant pressure. It is useful for calculating the amount of energy per mole either released or produced in a reaction, therefore is unit is kJ/mol.

In a reaction where energy is absorbed by the reactants during the formation of products, ΔH is positive. On the other hand, in a reaction where energy is released by the reactants during the formation of products, ΔH is negative.

The enthalpy change, ΔH of reactions are determined experimentally under standard conditions of 1 atm and 25 °C (298.15K). Enthalpy can be measured experimentally through the use of a calorimeter. A calorimeter is an isolated system which has a constant pressure and in which heat loss to the surroundings is minimal.

The atoms of helium are required to equalize the mass of a silver atom is 8.4 x 10 ⁻⁴⁸.

Atoms are the minute particles that are present inside elements.

Atomic mass of silver is 107.86 g/mol

Mass of one atom of silver will be

[tex]\dfrac{ 107.86 }{6.022 \times 10^{-23}} = 1.79 \times 10^2^4[/tex]

Atomic mass of helium is 6.941

[tex]\dfrac{6.022 \times 10^{-23}}{4.0 \times 1.79 \times 10^2^4 } = 8.4 \times 10^{-48}[/tex]

Thus, the atoms of helium are required to equalize the mass of a silver atom is 8.4 x 10 ⁻⁴⁸.

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Answer:

%Cr = 47.71%

%F = 52.29%

Explanation:

To do this, we need the atomic weights of all the elements in the chromiun fluoride, which are the following:

Cr: 51.996 g/mol

F: 18.998 g/mol

With these atomic weights, let's calculate the molecular mass of the chromium fluoride:

MM CrF₃ = (51.996) + (18.998 * 3) = 108.99 g/mol

Now, to get the percent composition, all we have to do is divide the atomic weight of each element by the molecular mass, and then, multiply by 100%:

% = (AW / MM) * 100

Replacing with each element:

%Cr = (51.996 / 108.99) * 100

%F = 100 - 47.71

Hope this helps

Answer:

AL- waves

Explanation:

because it is famousable

Answer:

The effects of supercritical CO2 (SC-CO2) on the microbiological, sensory (taste, odour, and colour), nutritional (vitamin C content), and physical (cloud, total acidity, pH, and °Brix) qualities of orange juice were studied. The CO2 treatment was performed in a 1 litre capacity double-walled reactor equipped with a magnetic stirring system. Freshly extracted orange juice was treated with supercritical CO2, pasteurised at 90°C, or left untreated. There were no significant differences in the sensory attributes and physical qualities between the CO2 treated juice and freshly extracted juice. The CO2 treated juice retained 88% of its vitamin C, while the pasteurised juice was notably different from the fresh juice and preserved only 57% of its vitamin C content. After 8 weeks of storage at 4°C, there was no microbial growth in the CO2 treated juice.

Answer:

671080887.616

Explanation:

Answer:

D) 100*C

Explanation:

Answer:

A. 0°C

Explanation:

El agua se evapora a los 0 grados

Answer: A. Raindrops act like a prism and separate the white light in sunlight.

Explanation:

The reason for the formation of rainbow is option A. Raindrop acts like a prism and separate the white lite into different colors.

Rainbow is an arc of colors from a white light ray which can be formed by the separation of component colors from white light by the combination of reflection, and refraction.

White light absorbs all colors and reflect all of them. That is why a white object is seen white the mix of all colors. When the white light passes through a raindrop, it gets refracted, the refracted light then reflects from the drop and undergo one more refraction and that make the component colors  in the form a bent or arc.

Therefore, raindrop is acting like a prism to separate the white light into its component colors.  Hence, option A is correct.

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