A molecule that has a central atom surrounded by three single bond pairs and one unshared pair would have a _____ shape

Answer:

382.5 grams

Explanation:

Find the molar mass of NaNO₃ and then multiply the number of moles by that molar mass :)

When 15.5 moles of \(HNO_3\) are consumed, 72.06 grams of water can be produced.

The balanced chemical equation for the reaction between copper and nitric acid is:

\(3Cu + 8HNO_3\ - > 3Cu(NO_3)_2 + 2NO + 4H_2O\)

Therefore, to calculate the amount of water produced, we first need to determine how many moles of \(HNO_3\) are consumed when 15.5 moles are present:

Moles of \(HNO_3\) consumed = 8/15.5 x 15.5 moles = 8.00 moles

Stoichiometry  can be used to calculate the amount of water produced:

Moles of \(H_2O\) produced = 4/8 x 8.00 moles = 4.00 moles

Calculating mass of water produced using its molar mass:

Mass of \(H_2O\) produced = moles of \(H_2O\) produced x molar mass of \(H_2O\)

Mass of \(H_2O\) produced = 4.00 moles x 18.015 g/mol = 72.06 g

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--The complete Question is,3Cu + 8HNO3 → 3Cu(NO3)2 + 2NO + 4H2O

In the above equation how many grams of water can be made when 15.5 moles of HNO3 are consumed? --

Answer: The answer is the second choice.

Explanation:

Answer:

A

Explanation:

This is glucose. Glucose is a type of sugar, and because sugars are type of carbohydrate, glucose is a carbohydrate.

Answer: 1265.6037

Explanation:

Answer: 2.52 M

Explanation:

The product of molarity (moles/litre) and volume in litres yields moles, and the numbers of moles in two solutions means dilute and concentrated are equal, which is expressed by the following equation: 

\(M_1V_1=M_2V_2\)

\($$Given that\\M $1=12.0 \mathrm{M}$ or mole $/ \mathrm{L}$\\$\mathrm{V} 1=420 \mathrm{ml}$\\$\mathrm{M} 2=$ ?\\$\mathrm{V} 2=2.0 \mathrm{~L}$ or $2000 \mathrm{ml}$\\\\$\mathrm{M} 1 \mathrm{~V} 1=\mathrm{M} 2 \mathrm{~V} 2$\\$\mathrm{M} 2=\mathrm{M} 1 \mathrm{~V} 1 / \mathrm{V} 2$\\$=12.0 * 420 / 2000$\\$=2.52 \ \mathrm{M}$\)

Sodium(Na) is the limiting reagent.

The reactant that is totally consumed during a reaction, or the limiting reagent, decides when the process comes to an end. The precise quantity of reactant required to react with another element may be estimated from the reaction stoichiometry.

How do you identify a limiting reagent?

The limiting reactant is the one that is consumed first and sets a limit on the quantity of product(s) that can be produced. Calculate how many moles of each reactant are present and contrast this ratio with the mole ratio of the reactants in the balanced chemical equation to get the limiting reactant.

Start by writing the balanced chemical equation that describes this reaction

\(2Na_{(s)} + Cl_{2 (g)} -- > 2NaCl_{(s)}\)

Notice that the reaction consumes 2 moles of sodium metal for every 1 mole of chlorine gas that takes part in the reaction and produces 2 moles of sodium chloride.

now we can see that we have 3 moles of sodium and 3 moles of chlorine, according to question. so, we can say that sodium is the limiting reagent in the given situation.

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A "suspension" is an unstable physical mixture of undissolved particles in a liquid. A suspension is a type of mixture where small, solid particles are dispersed throughout a liquid, but they are not dissolved in the liquid.

These particles will eventually settle to the bottom of the container if left undisturbed, as they are not stable enough to remain suspended for long periods of time. Examples of suspensions include muddy water, blood, and paint. Suspensions can also be seen in pharmaceuticals, where active ingredients are suspended in a liquid medium for easier consumption.

It's important to note that suspensions can be distinguished from solutions, where the particles are fully dissolved in the liquid and do not settle over time. While suspensions may not be as desirable in some applications due to their instability, they can be useful in others, such as in providing targeted drug delivery to specific areas of the body.

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Answer:

324 meters

Explanation:

I don't really have an explanation

Answer:

Considere uma molécula de glicose (C6H12O6) e indique: a-) O número de átomos de carbono = 6 b-) O número de átomos de hidrogênio = 12 c-) O número de átomos de oxigênio = 6d-) Quantos átomos teremos quando descubro se temos 8 moléculas dessa substância?

  48 oxigênio, 48 carbono e 96 hidrogênio e-) Quantos átomos de cada elemento teremos com 20 moléculas de glicose?

160 de oxigênio e carbono e 240 de hidrogênio.

Explanation:

A glicose é uma das moléculas mais usadas no organismo humano, pois é uma molécula em que sua decomposição é muito mais fácil que os aminoácidos, portanto, eles produzem como produto a moeda de energia que é ATP mais facilmente do que outros alimentos .

A glicose não é encontrada apenas em alimentos açucarados, isso é um mito, na verdade é a unidade de carboidratos (de assados ​​a doces)

The mass of the copper with a volume of 9.5 mL is approximately 84.74 g. Among the given options, the closest value to 84.74 g is option B) 85 g.

To calculate the mass of the copper, we can use the formula:

mass = density × volume

Given that the density of copper is 8.92 g/mL and the volume of the copper is 9.5 mL, we can substitute these values into the formula:

mass = 8.92 g/mL × 9.5 mL

Calculating the mass:

mass = 84.74 g

Therefore, the mass of the copper with a volume of 9.5 mL is approximately 84.74 g.

Among the given options, the closest value to 84.74 g is option B) 85 g.

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Answer:

The correct option is "Element 2 has very similar chemical properties as Element 4"

Explanation:

Both element 2 and element 4 have the same number of valence electrons; meaning they will be found in the same group (group 1) of the periodic table. Elements in the same group of the periodic table exhibit similar chemical properties. For confirmation, element 2 is sodium (based on the atomic number of 11 provided) while element 4 is rubidium (based on the atomic number of 37 provided) - the two elements are found in group 1 of the periodic table.

NOTE: Number of protons is the same as atomic number

Answer:

last choice

Explanation:

oxidation and reduction can be defined in terms of adding or removing oxygen to a compound

oxidation is gaining oxygen

reduction is to loss oxygen

Answer:

B Genetic diversity

Explanation:

Answer:

I think the answer is b.

Explanation:

:)

Answer:

6amu

Explanation:

mass=proton+neutron

mass of cl2=2(16+16)=64amu

Answer:

0.15066667

I tried, hope this helps :)

Answer:

Sieving

Explanation:

Sieving is a mechanical separation technique which depends on the relative sizes of particles in the mixture.

A mesh is used to discriminate between particle sizes. Particles in the mixture which are larger than the mesh size do not pass through the sieve, hence particles whose size is less than that of the mesh are separated from the rest of the particles in the mixture.

Yes, the centrifuge load always contains the an even number of the tubes.

The centrifuge load always contains the an even number of tubes. To prevent the unnecessary wear on the shaft and the bearings, it always load the centrifuge with the an even number of the tubes. If you have the only one sample to the centrifuge, fill the second test tube with the water to the same level as the sample tube have, and the place it in the port of the opposite of the sample tube.

Thus, it is necessary to load always contains the an even number of the tubes.

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The rise in kinetic energy with temperatures allows the solvent molecules to break apart the solute molecules that are held by intermolecular attractions.

There are two direct elements that influence solubility are

Temperature stimulates the solubility of both solids and gases, but the pressure is only concerned with the solubility of gases.

Thus,  solids are dissolved in liquid water, the solubility increases with temperature.

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Answer:

Kwaishokor is a form of severe protein malnutrition characterized by edema and an enlarged liver with fattty infiltrates.

Explanation:

Answer:

35.7

Explanation:

= 3.97*10-4

= 39.7-4

= 35.7

Each atomic-scale view can be classified as either an element, compound, or mixture: If only one type of atom is present, it is an element. If different atoms are chemically bonded in a fixed proportion, it is a compound. If different atoms or molecules are mixed without specific bonding or arrangement, it is a mixture.

Element: An element is a pure substance that cannot be broken down into simpler substances by chemical reactions. It consists of only one type of atom, meaning all atoms in an element have the same atomic number (number of protons).  

Compound: A compound is a substance composed of two or more different types of atoms that are chemically bonded together in a fixed proportion. Compounds can be broken down into their constituent elements through chemical reactions.  

Mixture: A mixture is a combination of two or more substances that are not chemically bonded together. The components of a mixture can be separated by physical means, such as filtration or evaporation. Mixtures can be homogeneous (uniform composition throughout) or heterogeneous (non-uniform composition).

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The experimental approach used to analyze the metal content in the precipitate of soap produced by reaction 1 was 0.1 M HCl(aq), then titrated with standard 0.1 M NaOH(aq) using an indicator.

Soap precipitate is a salt of a weak base. The addition of HCl produces free fatty acids, which can then be neutralized with NaOH. The difference between the number of moles of HCl and NaOH required to reach the endpoint gives the number of moles of RCO₂, which can then be used to calculate the mass and percent of the metal in the solid.

Complete questions:

Which experimental approach can be used to analyze the metal content of the soapy precipitate produced by Reaction 1?

M₂+(aq) + 2NaC₁₇H₃₂CO₂(aq) → 2Na+(aq) + M(C₁₇H₃₂CO₂)₂(s)

Dissolve the solid in a known volume of:

The true choice is D

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You should add the acid to the water in order to dilute the water's potency with the strong acid. the statement is false.

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Answer:

Explanation:

When a comet enters the solar system it curves towards the Sun due to the Sun's gravitational pull. Every celestial object in the universe has a gravitational pull whose force is dependent on the object's mass. The larger the object is the more gravitational pull it will have. The Sun is the largest object in our Solar system and therefore has the most gravitational pull. This is why the comet curves toward the Sun, but the opposite does not happen because the comet's gravitational pull is not strong enough to pull the Sun.                  

mitochondria

im not 100% sure but it makes sense

The correct answer is E) 0.829 moles.

The given problem involves determining the number of moles of N2O4 in a given amount of the compound. To solve this problem, the molar mass of N2O4 is required, which is given as 92.02 g/mol.

To determine the number of moles of N2O4 in 76.3 g N2O4, you can use the molar mass of N2O4, which is 92.02 g/mol. Use the formula:

moles = mass (g) / molar mass (g/mol)

moles = 76.3 g / 92.02 g/mol

moles ≈ 0.829 moles

So the correct answer is E) 0.829 moles.

This means that there are approximately 0.829 moles of N2O4 in 76.3 grams of the compound.

The mole is a unit of measurement used in chemistry to express amounts of a chemical substance. It is defined as the amount of substance that contains as many elementary entities (such as atoms or molecules) as there are atoms in 12 grams of pure carbon-12.

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Explanation:

a) 0.4998 mol

b) 0.249 mol

By using a minimum amount of water to rinse the conical vial, you can help minimize the loss of acetaminophen and ensure that as much of the purified product as possible is transferred to the Hirsch funnel.

It is also important to use cold water, as acetaminophen is more soluble in hot water and using hot water can lead to even greater loss of product.

When transferring purified acetaminophen to a Hirsch funnel, it is important to use a minimum amount of water to rinse the conical vial. This is because acetaminophen is not very soluble in water and using too much water can result in loss of product.

Acetaminophen is a solid that is typically purified through recrystallization from a solvent, such as ethanol or methanol. The purified acetaminophen is often collected in a conical vial and needs to be transferred to a Hirsch funnel for further purification or drying.

The Hirsch funnel is a filtration device that is often used to remove impurities or solvents from a solid product. To transfer the acetaminophen to the Hirsch funnel, it is often necessary to rinse the conical vial with a small amount of water to ensure that all of the product is transferred.

However, using too much water can dissolve some of the acetaminophen, leading to loss of product.

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Answer:

Find It Myself, Ask the Community, Get Live Help

Explanation:

The three main options for Microsoft users are Find It Myself, Ask the Community, Get Live Help. The first of which is finding it yourself through the search menu or help guidelines provided by Microsoft in all of their operating systems. Secondly, would be asking the community through search engines such as Google or through Microsoft help forums. Lastly, would be getting live help since Microsoft opertaing systems have a remote desktop feature that allows you to connect to another IT professional from a distance, or you can simply contact an IT professional to visit you in person for technical assistance.