The uneven heating of the atmosphere by the sun's energy creates
pressure differences.
Which effect is a direct result of this?
formation of clouds
O generation of winds
occurrence of lightning
an increase in humidity

Answer

The reaction will occur and the balanced equation will be:

Li₂O(aq) + BeS(aq) → Li₂S(aq) + BeO(s)

Explanation

The unbalanced equation given is: Li₂O + BeS

Solution:

The reaction will occur and the balanced equation will be:

Li₂O(aq) + BeS(aq) → Li₂S(aq) + BeO(s)

The reaction is a double replacement reaction.

The conclusion that can be drawn about lupus is that: Lupus can affect almost every system of the body. Option D. is the correct answer.

What is Lupus (SLE)?

This refers to a disease that happens when your body's immune system attacks your own tissues and organs (autoimmune disease).

Lupus (SLE) can affect the following body parts: joints, skin, kidneys, blood cells, brain, heart and lungs.

Symptoms differ from person to person but can include fatigue, joint pain, rash and fever. These can get worse from time to time (flare up) and then improve.

Lupus has no cure. Current treatments are based on improving quality of life by controlling symptoms and minimizing flare-ups. This starts with lifestyle modifications, including sun protection and diet. Also, disease management includes medication such as anti-inflammatories and steroids.

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Answer:

oxide triioide

Explanation:

its a dangerous substant that melts on contact

The standard enthalpy of formation (Δ\(H_f\)) is a measure of the energy released or consumed when one mole of a substance is created under standard conditions from its pure elements.

Standard enthalpies (Δ\(H_f\)) of formation for given reaction is 978.3 kJ

The standard enthalpy of formation is defined as the enthalpy change when one mole of a substance in the standard state (1 atm of pressure and 298.15 K) is formed from its pure elements under the same conditions.

Given reaction ;

\(N_2O_4(g) + 4H_2 (g) - > N_2(g) + 4H_2O(g)\)

To Find : Δ\(H_f\)

Δ\(H_f\) = ∑np Δ\(H_f\) (products) – ∑np Δ\(H_f\) (reactants)

Δ\(H_f\) = [1(Δ\(H_f\) \(N_2\)) + 4(Δ\(H_f\) \(H_2O\))] – [1(Δ\(H_f\) \(N_2O_4\)) + 4(Δ\(H_f\) \(H_2\))]

Δ\(H_f\) = [1(0) + 4(-241.8)] – [1(+9.16) + 4(0)]

Δ\(H_f\)  = [4(-241.8)] – [1(+9.16)] = 978.3 kJ

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Answer:

the answer is d

Answer:

D

Explanation:

Because they are many different types of chemicals some are dangerous but some are applicable to use . chemicals help to wash germs away so we can live in a healthy environment.

Answer:

[Kr] 4d² 5s²

Explanation:

Answer:

I wish I knew but I don't hope u get the answer

Answer:

56.96 grams

Explanation:

To find the mass of 1.78 moles of O2, we need to use the molar mass of O2, which is the mass of one mole of O2.

The chemical formula for O2 is O-O or simply O2. The molar mass of O2 is the sum of the atomic masses of two oxygen atoms, which can be found on the periodic table.

The atomic mass of oxygen (O) is approximately 16.00 g/mol. So the molar mass of O2 is:

Molar mass of O2 = 2 x atomic mass of O

= 2 x 16.00 g/mol

= 32.00 g/mol

Therefore, the mass of 1.78 moles of O2 is:

Mass = number of moles × molar mass

= 1.78 mol × 32.00 g/mol

= 56.96 g

So the mass of 1.78 moles of O2 is 56.96 grams.

Answer:

2 a

element pure form cannot broken down

3 b

Chemical change chemical R×N

(R×N = reaction)

4c homogeneous solution

Yield = Yield (reaction yield): A measure of a chemical reaction's efficiency, as a ratio of moles of product to moles of reactant. Usually expressed as a percentage. % Yield = Moles of product.

Explanation:

One mole of aluminum  contains 6.02 × 10²³ Al  atoms or formula units. Hence, 4.70 × 10²⁴ atoms  of Al  contains 7.8 moles of Al.

One mole of a substance is its amount containing 6.02 × 10²³  atoms or molecules. This number is called Avogadro number. One mole of every elements contains Avogadro number of atoms.

Similarly one mole of every compound contains 6.02 × 10²³  molecules. The mass of one mole of an element  is called its atomic mass.

Al is 13th element in periodic table. Zn is a transition metal.  One mole of Al  contains 6.02 × 10²³ Al atoms . Hence number of moles of  4.70 × 10²⁴atoms  is:

4.70 × 10²⁴ / 6.02 × 10²³  =7.8 moles  .

Hence, there will be 7.8 moles of  aluminum.

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Answer:

Bronsted lowry base = Proton acceptor = H2O

Bronsted lowry acid = Proton donor = HF-

Explanation:

The equation is given as;

HF-(aq) + H2O(l) --> F-(aq) + H3O(aq)

A bronsted lowry base is any specie that can accept hydrogen ion (proton) from another molecule.

Basically a bronsted lowry base is  a proton acceptor while a bronsted lowry acid is a proton donor.

In the reaction above, upon comparing both the reactants and products;

Bronsted lowry base = Proton acceptor = H2O

Bronsted lowry acid = Proton donor = HF-

Answer:

through Decantation

Explanation:

Decantation: Decantation is pouring out of upper clear layer of liquid into another container to separate two immiscible liquids or to separate different substances in a suspension mixture.

Therefore, we could use decantation once the sand particles settle down by gently pouring the water into another container. Once the water is transfered, we'll be left with sand in the bottom of the first container.

Hope that helps...

Answer:

okay....

Explanation:

technically, fish do not have wings. they are called fins and they are used for the purpose of transportation, just as legs are for humans.

~Ren

A leather jacket and printer paper are examples of items that can be made from renewable resources, while plastic forks, metal cans, and electronics are not considered renewable due to their reliance on non-renewable materials and processes. Option  C, E

The two correct answers that are made from renewable resources are:

C) Leather jacket: Leather is derived from animal hides, which are a byproduct of the meat industry. As long as there is a sustainable and responsible approach to animal farming, the production of leather can be considered renewable. The hides are obtained from animals that are raised for meat consumption, and their use in leather production helps reduce waste.

E) Printer paper: Printer paper can be made from various sources, including trees, bamboo, and recycled paper fibers. If the paper is sourced from sustainably managed forests or from fast-growing plants like bamboo, it can be considered renewable. Additionally, the use of recycled paper fibers reduces the demand for materials and promotes a more circular economy.

The other options, A) plastic fork, B) metal can, and D) electronics, are not made from renewable resources:

A) Plastic fork: Plastics are typically derived from fossil fuels, which are non-renewable resources. The production of plastic involves the extraction and processing of petroleum or natural gas, both of which are finite resources.

B) Metal can: Metal cans are predominantly made from aluminum or steel. While these metals can be recycled, their initial production requires the extraction of raw materials from the Earth, which is not a renewable process.

D) Electronics: Electronics are made from a wide range of materials, including metals, plastics, and various chemical compounds. The production of electronics involves the extraction of raw materials, many of which are non-renewable resources.

Option C and E.

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To calculate the molarity of vinegar, we need to know the moles of acetic acid (the main component of vinegar) and the volume of vinegar used.

The change in volume during the titration is:

Change in volume = Final volume - Initial volume

                = 33.5 mL - 12.3 mL

                = 21.2 mL

Assuming that the density of vinegar is approximately 1 g/mL, we can convert the change in volume to grams:

Change in volume (mL) × Density (g/mL) = Mass (g)

21.2 mL × 1 g/mL = 21.2 g

Next, we need to convert the mass of acetic acid to moles. The molar mass of acetic acid (CH3COOH) is approximately 60.05 g/mol:

Moles = Mass (g) / Molar mass (g/mol)

     = 21.2 g / 60.05 g/mol

     ≈ 0.353 mol

Finally, we calculate the molarity of vinegar using the moles and total volume:

Molarity = Moles / Total volume (L)

        = 0.353 mol / 0.0212 L

        ≈ 16.65 M

Therefore, based on the information provided, the molarity of vinegar is approximately 16.65 M.

The name for NaCl is Sodium chloride

Salt is defined as the chemical compound that contains both a positively charged cation.and negatively charged anion.

It is formed by the reaction of acid and base is a neutralisation reaction.

Examples of salt include:

Therefore another name for salt is common salt.

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Answer:

51.9961 grams

Explanation:

You can view more details on each measurement unit: molecular weight of Chromium or grams The molecular formula for Chromium is Cr. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Chromium, or 51.9961 grams.

Answer:

B) It must be a weak acid.

Explanation:

If HA is a strong acid

\(HA\rightleftharpoons H^++A^-\)

Now the pH value can be written as follows

\(pH=-log[H^+]\\pH=-log(5\times 10^{-2})\\pH=2\times log5\\pH=1.4\)

But given that acid HA has 2.3 pH value.

Therefore we can say that HA is weak acid.

Thus the answer will be option (B).

B) It must be a weak acid.

Answer:

trigonal bipyramidal seesaw

Explanation:

The molecular geometry of SF4 is seesaw with one valence electron.

In SF4, there are four bonding pairs and one lone pair.

These atoms form a trigonal bypyramidal shape.

Answer:

Deposition: - the dropping out of weathered rock materials. 1. The composition of sediments on Earth's surface usually is quite different.

Explanation:

Land degradation affects people and ecosystems throughout the planet and is both affected by climate change and contributes to it.

Soils develop because of the weathering of materials on Earth's surface, including the mechanical breakup of rocks, and the chemical weathering of minerals.

Answer:

all you have to so answer it all done

The compound that has a functional group containing two oxygen atoms is peroxide. In addition to peroxides, there are other compounds that contain functional groups with two oxygen atoms. These include carboxylic acids and esters.

Peroxide compounds, such as hydrogen peroxide (H₂O₂) or organic peroxides, have a functional group (-O-O-) where two oxygen atoms are bonded together. This group is responsible for the characteristic properties and reactivity of peroxides.

Carboxylic acids: Carboxylic acids have the functional group -COOH, which consists of a carbonyl group (C=O) and a hydroxyl group (-OH) bonded to the same carbon atom. While carboxylic acids have one oxygen atom from the carbonyl group, the hydroxyl group provides the second oxygen atom.

Esters: Esters have the functional group -COO-, which consists of a carbonyl group (C=O) and an oxygen atom (-O-) bonded to the same carbon atom. This arrangement gives esters two oxygen atoms within their functional group.

Hence, the compounds with functional groups containing two oxygen atoms include peroxides, carboxylic acids, and esters.

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Even with the additional energy input from increasing both the temperature and concentration, Reaction A will not proceed.

To determine if Reaction A will proceed after both increases, we need to calculate the total energy change for Reaction A.

First, let's calculate the energy change for increasing the temperature by 20°C:

ΔE1 = 50 J

Next, let's calculate the energy change for increasing the concentration by 4 M:

ΔE2 = 100 J

The total energy change for Reaction A is:

ΔEA = ΔE1 + ΔE2 + 300 J = 450 J

Since the current energy level of Reaction A is only 160 J, which is less than the required energy change of 450 J, Reaction A will not proceed even if we increase the temperature and concentration.

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To find the density of the unknown piece of metal, we can use the formula:

Density = mass / volume.

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Answer: B. CH₂OH

Explanation:

First off, we need a liquid solvent. Eliminate C and D.

Now, we have to consider polarity.

Answer: Convection

Explanation: Convection is the transfer of heat energy in a fluid. This type of heating is most commonly seen in the kitchen with a boiling liquid. Air in the atmosphere acts as a fluid.

Answer:

1.92704e24 atoms

Explanation:

Using Avogadro's number, you can set up a stoichiometric equation to find the number of atoms.

There are 1.926 × 10²⁴ atoms in 3.2 moles of sulfur (S).

The number of atoms in a substance can be calculated by multiplying the number of moles by Avogadro's number.

Avogadro's number is the number of atoms present in 12 grams of isotopically pure carbon-12, being 6.02214076 × 10²³.

According to this question, there are 3.2 moles of sulfur. The number of atoms can be calculated as follows:

no of atoms = 6.02 × 10²³ × 3.2

no of atoms = 19.26 × 10²³

no of atoms = 1.926 × 10²⁴

Therefore, 1.926 × 10²⁴ atoms are in 3.2 moles of sulfur.

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Answer:

reactants are taken in from the environment by the plant,and products are formed inside the plant.

Explanation:

Answer: 0.85 hertz

Explanation: Calculator said so also 0.85 is decimal form for 85