0.2 pts A molecule in which the central atom forms one double bond and two single bonds is said to have a ________ shape.

Its balanced already

So

Mass of S

The scenario whereby the initial pressure is equal to the final pressure is : ( A ) A balloon filled with air is heated from 300k to 600k, causing it to expand and double in size.

Gay Lussac's law states that at constant pressure, the volume of gas is directly proportional to the change in temperature. i.e. V ∝ T. From scenario 1 the change in temperature from 300 K to 600 K shows a 100% increase in temperature which corresponds with the expansion and size doubling of the volume of gas.

Hence we can conclude that The scenario whereby the initial pressure is equal to the final pressure is : ( A ) A balloon filled with air is heated from 300k to 600k, causing it to expand and double in size.

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Answer:

No, because the moon takes about 27 days to fully orbit which means that 3 weeks would not be enough to see all of the moon's phases, but if you think that you don't need 27 days due to the fact that some of the days there may not be a phase change then that is completely up to you.

Explanation:

Hope this helps:)...if not then sorry for wasting your time and may God bless you:)

Answer:

a) Diffraction patterns possess a center of symmetry

Explanation:

Answer:

The oxidation of organic compounds generally increases the number of bonds from carbon to oxygen, and it may decrease the number of bonds to hydrogen. Encyclopædia Britannica, Inc. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage.

Explanation:

i hope it was helpful

Answer:

2 C4H10     +  13  O2    ====>   8  CO2      + 10 H2O

Explanation:

During the replacement reaction of magnesium and hydrochloric acid MgCl₂ is produced with hydrogen gas.

Replacement reactions are those reactions in which one entity from the one of the reactant will replace by another entity for the formation of the product.

Balanced chemical reaction between magnesium and HCl will be represented as:

Mg²⁺  +  2HCl  →  MgCl₂  +  H₂

In the baove reaction magnesium displaces hydrogen atom from the acid molecule.

Hence MgCl₂ is produced in the reaction.

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Answer:

STP is Standard temperature and Pressure, which are o degrees C and 1.013 x 10^5 Pascals. At those values, one mole of any ideal gas occupies 22.41 litres.

Answer:

With high electronegativity differences

Explanation:

For exam ple

The answer of this statement is false because partial charge occurs only on polar bonds.

I should write partial charges on any polar bond within a molecule, but not a molecule which whole is nonpolar because charge only occurs when the atom gains or loses electron.

So we can conclude that The answer of this statement is false because partial charge occurs only on polar bonds.

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Answer: Heyo Kenji Here! Here's your answer- The electricity that is conducted through copper wires in your home consists of moving electrons. The protons and neutrons of the copper atoms do not move. The actual progression of the individual electrons in a given direction through the wire is quite slow.

Explanation: Hope this helps!

Have a nice day!

- Kenji ^^

The most common description of it is note Magnesium sulphate

There are 7 water molecules

So by heating

Explanation:

Sol. 450 ml there is LiCl 200 g

Sol. 1000 ml there is LiCl 200/450×1000

= 444.44 g

Molar = g/molar mass = 444.44/42.394 = 10.48 M

I think it would lose its heat faster than the plastic bags because of higher conductivity feature.

Conduction is the process in which heat or electricity is transmitted or transferred through the material of a substance without movement of the material.

We know that metals are good conductors so we can conclude that it would lose its heat faster than the plastic bags bof higher conductivity feature.

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Answer:

KCIO

Explanation:

Adam observed properties of four different waves and the sound quality of all of the waves can be compared.

Waves is the propagation system of any matter in the upside and downside direction from the mean position.

Quality of sound waves will be measured by using the decibel unit which gives idea about the intensity of the sound in terms of loudness. And intensity of the sound waves is also be calculated by using the frequency in the given table frequency and decibel unit of four waves are given.

So we are able to compare the sound quality of all given waves and image of table is attached below.

Hence the sound quality of all of the waves can be compared.

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Answer:

The Answer is B

Explanation:

Took it on Edge

Answer:

C. people rely on ecosystem services provided by intact ecosystems

Explanation:

:) Comment was correct! <3

Protecting and managing biodiversity resources is a crucial part of maintaining ecological harmony and ensuring the survival of species' future generations so that they can live long healthy lives. The correct option is C.

In order to stop the extinction of species, biodiversity should be protected. To keep nature in balance, it is conserved. Other organisms will suffer if one species in the food chain becomes extinct.

The systems that sustain all life on Earth, including humans, depend on biodiversity. We cannot have the healthy ecosystems that we depend on to give us the air we breathe and the food we consume without a diverse variety of animals, plants, and microorganisms.

Thus the correct option is C.

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#SPJ4

Answer:

1.37cm

Explanation:

It's less than 1.4cm but more than 1.3cm. It's also more than 1.35cm so I guess the best answer would be 1.37cm or round up to 1.4cm

Answer:

The answer is d.

"It has no definite shape or volume and will expand indefinitely."

Explanation:

Gaseous substances contain molecules that seriously want to move. These molecules take up any space that is free to the point where the substance will dissapate and lose its concentration. Aka, expand indefinitely.

Answer:

New covalent bonds form between oxygen atoms and hydrogen atoms.

Explanation:

For example, when hydrogen gas, H2(g), is burned in the presence of gaseous oxygen, O2(g), a new substance, liquid water, H2O(l ), forms. The covalent bonds within the H2 molecules and O2 molecules break, and new covalent bonds form between oxygen atoms and hydrogen atoms (Figure 7.1).

The substance which has H⁺ concentration but is still considered an acid is milk.

Acidity of any substance will be calculated by using the pH scale and pH is define as:

pH = -log[H⁺]

Among the given substances pH of them are in range of:

pH scale ranges from 0 to 14, where 0 to 6.9 shows the acidity, 7 shows the neutrality and from 7.1 to 14 shows the basicity of the solution. From the given pH values it is clear that lye is highly basic and gastric fluid is highly acidic. And blood has slight basic nature and due to the presence of lactic acid milk has very low concentration of H⁺ ions and considered as acid.

Hence milk is the correct answer.

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The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in this chemical reaction in the form of smoke and black soot.         hope this helps

Sugar is made of carbon, hydrogen, and oxygen atoms. When heated over a candle, these elements react with the fire to turn into a liquid. The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in this chemical reaction in the form of smoke and black soot.

Answer:

+2

Explanation:

10 e   will 'balance '   10 p    then there is two + charges leftover

Answer:

stroma part of chloroplast

Explanation:

Answer:

The main difference between isopropyl alcohol and rubbing alcohol is the concentration. The concentration of isopropyl alcohol is 100%, while the concentration of rubbing alcohol is less because of the addition of water. Otherwise, the two liquids have similar properties.

Explanation:

Hope this helps

Answer:

With an increase in concentration, the number of atoms with the least required vitality will increase, and so the rate of the response will increase.

Explanation:

Answer:

using a hot plate to boil water

Explanation:

the others require a chemical reaction to produce heat

Answer

no. of moles =

[tex] \frac{mass \: {g} \: }{ \: molecular \: wight} [/tex]

so, mass (g)= no. of moles × molecular wight

Explanation:

Li molecular wight equal to 6.941

mass (g)=3.29×104 mol ×6.941 =2374.93g of lithium

Answer:

D) is the correct answer.

Explanation:

[tex]na2co3 - > na2o + co2[/tex]