A sample of nitrogen occupies 10.0 liters at 25oC , what would be the new volume at 20oC?

Answer:

When radioactive atoms decay, they release energy in the form of ionizing radiation (alpha particles, beta particles and/or gamma rays). The energy is called ionizing radiation because it has enough energy to knock tightly bound electrons from an atom's orbit. This causes the atom to become a charged ion.

Explanation:

Answer:

When it decays, a radionuclide transforms into a different atom - a decay product. The atoms keep transforming to new decay products until they reach a stable state and are no longer radioactive. The majority of radionuclides only decay once before becoming stable.

Answer:

An unconformity is a widespread surface separating rocks above and below, which represents a gap in the rock record. Unconformities occur when either erosion wears away rocks, or rock deposits never form. Therefore, a time gap exists between when the rocks below the unconformity formed and when those above it formed.

Explanation:

we know that,

W = mL + mcθ

W= 10(336+ 4.2(50))= 5460 kJ

so quantity of heat required is 5460 J

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Answer:

evaporation

Explanation:

Evaporation occurs when a liquid changes to a gas. During evaporation, molecules gain enough thermal energy to escape from the liquid surface into the air as water vapor.

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Answer:

Hydrogen

Explanation:

Hydrogen can never be central atom despite its low electronegativity

Answer:

it is a liquid that is made from the combination of a liquid and a solid.

Explanation:

When these two states of matter are ground and mixed together, they form one state that is liquid

Answer:

Solid and liquid

Explanation:

Solid= ice cream or ice

Liquid= milk

these are common things used in a milkshake

Answer:

so what do you need help with?

Explanation:

Answer:

what do you need help with i will try to answer

Explanation:

For a liter of a buffer that is 1. 5 m in acetic acid and 0. 70 m in sodium acetate, and with a  result in a buffer pH of 4.01, the moles of HCl required is mathematically given as x=0.313mol

Generally, the equation for the pH   is mathematically given as

pH=pKa+logsalt/acid

Generally, the equation for the Chemical Reaction   is mathematically given as

HCl+CH3CooNa---->NaCl+CH3OOH

Therefore

4.01=4.74+log\frac{0.8-x}{1.3+x}

-0.52=log\frac{0.8-x}{1.3+x}

x=0.313mol

In conclusion, The moles of HCl required is

x=0.313mol

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Buffer is a solution that prevents pH variation in a solution when base or acid is added. In a liter of buffer 0.313 mol of hydrochloric acid must be added.

pH is the potential of hydrogen and is given as,

[tex]\rm pH =\rm pKa + log \dfrac{salt}{acid}[/tex]

The chemical reaction is given as,

[tex]\rm HCl+CH_{3}COONa \rightarrow NaCl+CH_{3}OOH[/tex]

Given,

pH =4.01

pKa = 4.74

Concentration of salt = 0.8 - x

Concentration of acid = 1.3 + x

Substituting values in the pH formula:

[tex]\begin{aligned} 4.01 &= 4.74 + \rm log \dfrac{(0.8 - x)}{ (1.3 + x)}\\\\-0.52 &= \rm log \dfrac{(0.8 - x)}{ (1.3 + x)}\\\\&= 0.313 \;\rm mol\end{aligned}[/tex]

Therefore, 0.313 moles of HCl are needed.

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The pH of a solution of H₂SO₄ that has [H₃O⁺] is 5.45 × 10⁻⁵ M, is 4.26.

pH is define as the negative logarithm of the concentration of H⁺ or H₃O⁺ ions, and it is represented as:

pH = -log[H⁺]

Concentration of H₃O⁺ in H₂SO₄ solution = 5.45 × 10⁻⁵ M

pH of H₂SO₄ solution will be calculated as:

pH = -log(5.45 × 10⁻⁵)

pH = -(-4.26)

pH = 4.26

Hence required pH is 4.26.

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Answer:

4.26 is the answer

Explanation:

edge 2022

The strong bases are hydroxides of group 1 and 2 metals (ex. Sodium, Potassium) or larger group transition metals (Copper, Iron), or oxides of the same metals.

It follows from structure of strong bases that they are composed of highly electropositive metals of groups 1 and 2 and the hydroxide ion.

Additionally, transition metals may also form bases with the hydroxide ion or oxides of this transition metals.

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Answer:

A. Milk

Explanation:

Cause is basics. It's proved by scientific I watched on TV and my teacher told me. I am a 100% sure.Go ask to your mother how many litres you drink her milk per day.

Answer:

This is an acid-base reaction (neutralization): MgCO 3 is a base, HNO 3 is an acid.

Explanation:

HNO3 + MgCO3 → H2O + CO2 + Mg(NO3)2

The action that would speed up the solution making process is : ( A ) Heat the water while adding the crystalline solid

When preparing a solution or trying to dissolve a crystalline solid in water there are three ways which can be used to speed up the solution making process or dissolving the solid faster. and they are

From the options listed above the best action is to heat the water while adding the crystalline solid.

Hence we can conclude that The action that would speed up the solution making process is : ( A ) Heat the water while adding the crystalline solid.

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Answer: A

Explanation: heat the water

Answer:

It should be Magnetic fields can push and pull objects without touching

but I only say with touching. Maybe it's an error on you're teachers/Prof behalf.

Answer:

S 2.6 [2.58] & C is 2.6 [2.55]

Explanation:

Answer:

helps to trap heat in our atmosphere

The formation of a primary alcohol from a ketone involves the use of a ketone and NaBH4 followed by an acid workup.

The question is unclear but clearly relates to the formation of a primary alcohol. The first step in this reaction is the attack of the NaBH4 on the carbonyl carbon of butanone.

The reaction sequence is completed by an acid work up in which an acidic hydrogen is abstracted by the nucleophile to yield a primary alcohol.

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The hydrogen of 1-chloropent-2-ene shows the largest chemical shift is  C2 or C3 because they are more de-shielded than they have the largest chemical shift value.

Generally, There is the biggest chemical shift at C2 or C3 due to the fact they are connected through the pi- bond and range is about 4.5 - 6 ppm and C1 has a range of about 3.5 due to Cl- ion.

In conclusion,  C2 or C3 is more de-shielded than they have the largest chemical shift value.

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Answer:

Water (H2O) and Sodium (Na) are reactants.

Explanation:

2H2O+2Na......2NaOH+H2

In the above reaction the water (H2O) and sodium (Na) are reactants and sodium hydroxide (NaOH) and hydrogen are products.

And this is the single displacement reaction.

Answer:

Quantitative data refers to any information that can be quantified, counted or measured, and given a numerical value. Qualitative data is descriptive in nature, expressed in terms of language rather than numerical values

Explanation:

:)

answer: the oject would break because of the amount of cooling added to the mass  so after five minutes it would start to crust a little bit. and the temprature would decrese jarastically

Explanation:

yes

Answer:

b is the answer

Answer:

Carbon dioxide

Explanation:

The reaction is given by

CO2 is a harmful gas also responsible for the global warming and air pollution

When coal is burnt in the presence of excess air, some of the gases produced include carbon dioxide, oxides of nitrogen, and sulfur dioxide.

When coal is burnt in the presence of a lot of air, a variety of gases are produced: These include:

Aside from carbon dioxide, other gases depend on the content of coal.

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Answer:

You can use fusion to measure the amount of energy required to melt a given amount of a solid at its melting point temperature.

Explanation:

Answer:

Gram, Kilogram, and Tonne

Explanation:

Answer:

The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon.

Explanation:

Answer:

CFCs and halogens coming from spray bottles and other human satisfaction sustaining devices cause global warming, which will cause sea levels to rise. Because of this, several countries have banned these chemicals because of anticipation of a rise of sea levels and several important countries to be sunken.

Solar energy is a viable alternative energy resource due to its high usage application.

The solar energy is considered as a viable alternative energy resource because this energy can used in the form of electricity for operating all electrical devices present in our homes.

So we can conclude that solar energy is a viable alternative energy resource due to its high usage application.

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Answer:

It has an endless supply is the answer.