pick the correct model

Answer:

C6H12O6

Glucose

Explanation:

Glucose is a monocarbohydrate

carbohydrates always have only C, H, and O

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Answer:

A. 9.3 g

B. 0.11 g

Explanation:

PART A

First we convert 3.2 grams of pure iron into moles, using its molar mass:

Now we convert 0.0573 moles of Fe into moles of HBr, using the stoichiometric coefficients:

Finally we convert 0.115 moles of HBr into grams, using its molar mass:

PART B

This time we convert the 0.0573 moles of Fe from last time into H₂ moles:

Finally we convert H₂ moles into grams:

Answer:

18.2784 g

Explanation:

First we convert 180 lb to kg:

Now we calculate the mass of antibiotic taken in one day:

Given that it is taken twice daily, in one day the person would take (652.8 * 2) 1305.6 mg. In grams that mass would be:

Finally we multiply those 1.3056 daily grams by the 14 days in two weeks:

The total mass of the antibiotic taken by a 180 lb person for the two-week period would be 18,252.8 mg.

An antibiotic is a type of antimicrobial substance used to treat bacterial infections. It is a medication that either inhibits the growth of bacteria or kills them outright.

Antibiotics work by targeting specific structures or functions in bacterial cells, disrupting their ability to replicate or causing them to die. They are an essential tool in modern medicine for treating various bacterial illnesses and have significantly contributed to improving human health by reducing the impact of infectious diseases.

To calculate the total mass of the antibiotic taken by a 180 lb person for a two-week period,

Convert the person's weight from pounds to kilograms:

Weight in kilograms = 180 lb × 0.453592 kg/lb

= 81.65 kg

Daily dosage = 8.0 mg/kg × 81.65 kg

= 653.2 mg

Total dosage for two weeks = Daily dosage × 2 (twice daily) × 14 (days)

= 18,252.8 mg

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Answer:

I think 4 I'm not completely sure

Explanation:

I hope it's right

Answer:

10.5M HCl

Explanation:

Using the chemical reaction:

KOH + HCl → H₂O + KCl

Where 1 mol of KOH reacts per mole of HCl

We can solve this problem converting the mass of KOH to moles using its molar mass. The moles of KOH added are equal to moles of HCl in the solution. That is:

Moles KOH = Moles HCl

154.9g KOH * (1mol / 56.1g) = 2.761 moles

The molarity of the solution (Moles HCl per liter of solution) is:

2.761moles HCl / 0.262L =

Answer:

950 torr

Explanation:

Step 1: Given data

Step 2: Calculate the final pressure of the gas

If we assume ideal behavior and constant temperature, we can calculate the final pressure of the gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

P₂ = P₁ × V₁/V₂

P₂ = 760 torr × 1.00 L/0.800 L = 950 torr

Answer: If the Sun had an even greater mass then it currently does, it would have a larger gravitational pull and since it's heat would be closer to Earth, both by magnitude and gravity, life on Earth wouldn't be possible and life on Mars would be reality. Also, when the sun would explode, it would have a larger supernova and possibly create a white dwarf (something that only happens to red supergiant stars when they die), with a gravitational force so strong it wold have two beams of light coming out it's north and south poles (like a black hole).

I hope this helps!

Answer:

When the electrons in the atom are excited, for example by being heated, the additional energy pushes the electrons to higher energy orbitals. When the electrons fall back down and leave the excited state, energy is re-emitted in the form of a photon

Explanation:

The electrons, in redox reaction get partially transferred by one to another element.

A redox reaction occurs when the oxidation states of the substrate change. The loss of electrons or maybe an increase in the oxidation state of a chemical and its atoms is referred to as oxidation. The gain of electrons or a reduction in the oxidation state of either a chemical or its atoms is referred to as reduction. The oxidation as well as reduction process can be seen in same reaction which is introduced as redox reaction.

Electron can be considered as sub atomic particle which carry negative charge on it.

The given reactions are:

a. Ca(s) + Cl2(g) → CaCl2(s)

b. 4Cu(s) + O2(g) → 2Cu2O(s)

After transferring two electron in both reaction Ca and Cu it will form  CaCl2 and 2Cu2O.

Therefore, after transferring partially electrons one elements get converted into another kind of molecule

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The bond angles around carbon in the triple bond are 180 degrees and it is sp hybridized. option B is correct

This hybridization process involves mixing the valence s orbital with one of the valence p orbitals to yield two equivalent sp hybrid orbitals that are oriented in a linear geometry.

The set of sp orbitals appears similar in shape to the original p orbital, but there is an important difference. The number of atomic orbitals combined always equals the number of hybrid orbitals formed.

The p orbital is one orbital that can hold up to two electrons. The sp set is two equivalent orbitals that point 120° from each other. The two electrons that were originally in the s orbital are now distributed to the two sp orbitals, which are half filled.

Therefore, due to the sp hybrid and 120-degree angle option B is correct

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Answer:

A phase change is occurring; the liquid water is changing to gaseous water, or steam. On a molecular level, the intermolecular forces between the water molecules are decreasing. The heat is providing enough energy for the water molecules to overcome these attractive forces.

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Have a great day, be safe and healthy

Thank u  

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The phase transition takes place at the molecular level by changing the strength of intermolecular forces between the molecules.

Phase changes can be defined as the physical processes of transition between a state of a medium, identified by some parameters. These changes in states of matter that can be written as liquid, gas, solid, and plasma.

A particular phase in a thermodynamic system exhibits uniform physical properties. During a phase transition, some properties of the medium change, because of the change in external conditions, such as temperature, and pressure.

In a solid state, the molecules are compactly bound by a strong force of attraction. In the liquid state, the molecules have lesser attraction forces. The phase changes depend upon the temperature and pressure.

Therefore, phase transitions occur on a molecular level as the alteration in the strength of intermolecular forces.

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Answer:

Yes it is because heating expands molecules of solution which helps to form a solution as it acts as solvent solution.

Explanation:

Explanation:

I don't really understand the question

Answer:

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Explanation:

nzjsnxjsjnBua ahjsbs hJbsjs jznnsjs

Answer: Corona

Explanation: hope this help

Answer:

Nearly all of the hydrogen consumed in the United States is used by industry for refining petroleum, treating metals, producing fertilizer, and processing foods. U.S. petroleum refineries use hydrogen to lower the sulfur content of fuels.

Explanation:

Hope it helped brainlist plz:)

Answer:

The first choice: a 2 in front of HCl

Explanation:

Answer:

I'd  Say B

Explanation:

Answer:

3.62

Explanation:

Using the Henderson-Hasselbach equation:

pH = pKa + log[base]/[acid]

pH = -log(1.8 x 10^-4) + log(0.15/0.20) = 3.62

The pH of acid is between 0-7 on pH scale while for base pH range is from 7-14. Therefore, the pH of of the buffer solution comprised of 0.20 M HCHO₂ and 0.15 M NaCHO₂. (Ka for HCHO2 = 1.8 x 10⁻⁴) is 3.62. pH is a unitless quantity.

pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. More the value of hydronium ion concentration, more will be the solution acidic.

On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. pH depend on the temperature. At room temperature pH scale is between 0 to 14. pH of neutral solution is 7.

Using the Henderson-Hassel Bach equation:

pH = pKa + log[base]/[acid]

pH = -log(1.8 x 10^-4) + log(0.15/0.20) = 3.62

Therefore, the pH of of the buffer solution comprised of 0.20 M HCHO2 and 0.15 M NaCHO2. (Ka for HCHO2 = 1.8 x 10-4) is 3.62.

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Answer:

Explanation:

Waves are actually energy passing through the water, causing it to move in a circular motion. ... This phenomenon is a result of the wave's orbital motion being disturbed by the seafloor.

The direction a wave propagates is perpendicular to the direction it oscillates for transverse waves. A wave does not move mass in the direction of propagation; it transfers energy.

Answer:

The answer I think that is correct is 65g

There are 49.5g of CoCl2 in 1/2 liter used to make a 1.0 molar solution. Details about how to calculate molar concentration can be found below.

The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass.

However, the number of moles of CoCl2 must be calculated using the following formula:

no of moles = 0.5L × 1M

no of moles = 0.5moles

Molar mass of CoCl2 = 99g/mol

mass of CoCl2 = 0.5 × 99

mass of CoCl2 = 49.5g

Therefore, there are 49.5g of CoCl2 in 1/2 liter used to make a 1.0 molar solution.

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Answer: Have a nice dAy?

Explanation: I thought i knew but nvm sorry

Answer:

The metals Co, Cu and Ti all require Roman numerals in the names of their compounds.

The elements Co, Ni, and Hg are all transition elements.

The elements P, As, and Bi are in the same family on the periodic table.

Explanation:

Transition elements are those which changes their charges as they bond with other elements or forms a compound with other elements. They show transitional behavior when they bond. Some of the transition elements are :

Chromium, Titanium, cobalt, mercury, copper, iron, vanadium, zinc, Silver, etc.

The transition elements use roman numerals in their names of the compounds.

Therefore, Cobalt (Co), Copper (Cu) and Titanium (Ti) are the elements that require a Roman numeral in the names of their compounds.

The elements Phosphorus (P), Arsenic (As) and Bismuth (Bi), they all belong to the nitrogen family of Group 15 (Va).  

Answer:

[tex]0.060molH_2O[/tex]

Explanation:

Hello there!

In this case, since the chemical reaction between ethanol and oxygen to water and acetic acid is:

[tex]CH_3CH_2OH+O_2\rightarrow CH_3COOH+H_2O[/tex]

Thus, since there is a 1:1 mole ratio between oxygen and water, the produced moles of water are calculated down below:

[tex]0.060molO_2*\frac{1molH_2O}{1molO_2}=0.060molH_2O[/tex]

Best regards!

Answer:

the generation of electricity and other energy jointly, especially the utilization of the steam left over from electricity generation to produce heat.

I hope it helps!! Have a nice day

Answer:

Cogeneration r is the use of a heat engine or power station to generate electricity and useful heat at the same time.

Answer:

[tex]m_{H_2O}=74.8gH_2O[/tex]

Explanation:

Hello there!

In this case, according to the given chemical reaction, it is possible to realize there is a 1:2 mole ratio of sulfuric acid to water; thus, given the mass of the former and its molar mass (98.07 g/mol), it is possible to determine the mass of produced water as shown below:

[tex]m_{H_2O}=203.50gH_2SO_4*\frac{1molH_2SO_4}{98.07gH_2SO_4}*\frac{2molH_2O}{1molH_2SO_4} *\frac{18.02gH_2O}{1molH_2O}\\\\m_{H_2O}=74.8gH_2O[/tex]

Regards!

Answer:

Explanation:according to question:

. Nacl (aq) + AgNO3 (aq) --> AgCl

(s) + NaNO3 (aq).balanced.

Answer:

The lithosphere solid part of the earth's crust