Draw the major organic product(s) of the following reactions including stereochemistry when it is appropriate. H2O/H2SO4 Hgo . Use the wedge/hash bond tools to indicate stereochemistry where it exists. If no reaction occurs, draw the organic starting material. - Separate multiple products using the + sign from the drop-down menu

Answer:

The characteristics of unicellular organisms are as follows:

The unicellular organisms usually reproduce by asexual means.

They can be eukaryotes or prokaryotes.

They are found in almost all habitats, from hot springs to frozen tundra.

They possess whip-like structures for movement.

The nutrients enter or leave the cell by the process of diffusion.

Explanation:

Answer:

involved in recycling

Makes oxygen we breathe

Explanation:

Answer:

energy was release in creating the bond

Explanation:

The isotopes of the same element in the given options are 21/10 and 22/10 (option A and B).

Isotopes are two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.

The above definition shows that atoms of isotopes will have the same atomic number but a different mass number.

Isotopes of the same elements have different number of neutrons and this causes the difference in mass numbers.

According to this question, 21/10 and 22/10 are isotopes of the same element because they have the same atomic number.

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Answer:

C

Explanation:

All thing in option c is flammable

Answer:

D

Explanation:

Answer:

The answer is option A.

Na4C

Hope this helps you

To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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To find the total amount of amoxicillin given over 11 days, we can use dimensional analysis.

   Start by identifying the known quantities: 2 tablets per day and 375 mg per tablet.

   Next, identify the unknown quantity: the total amount of amoxicillin given over 11 days (in mg).

   Write the equation using the known quantities and the unknown quantity:

   (2 tablets/day) x (375 mg/tablet) x (11 days) = unknown quantity

   Use the units to cancel out units and get the final result:

   2 x 375 x 11 = 8250 mg

So, over 11 days, the patient will receive 8250 mg of amoxicillin.

Answer: -210.08 J

Explanation:

Use the formula q = (m)(c)(ΔT)

q = (1.25)(2.02)(102.1-185.3)

q = -210.08 J

This is exothermic! Heat is lost.

Answer:

i.

A kid falling out of a tree - Gravitational Potential energy to Kinetic energy

ii.

A scout rubbing sticks together to start a fire - Kinetic energy to Heat energy

iii.

A man running a kerosene heater - Chemical Potential energy to Heat energy

Answer:

120 g of NaCl in 300 g H20   at 90 C

Explanation:

At x = 90   go vertical to the line for NaCl...then go left to the y-axis to find the solubility in 100 g H20   = 40

we want   300 g H20    so multiply this by  3    to get   120 gm of NaCl in 300 g

The final concentration of the chloride ions is  0.32 M.

We know that we have to obtain the number of moles of the iron II chloride that was reacted in the solution and then we would have;

Number of moles of iron II chloride = 4.08g /127 g/mol = 0.032 moles

Given the fact that there are two chloride ions hence the amount of the chloride ions is 0.016 moles

The concentration of the silver nitrate = 50/1000  *  0.60 M

= 0.03 moles

Thus we would have a final concentration of 0.016 moles/ 0.05

= 0.32 M

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Answer:

Exxplanation:

Answer:

Although it is possible to have more than one state, it is also possible to have only one state.

Explanation:

The total mass of the balloon and its content is 1521.17 g, the number of moles of CO₂ in the balloon is 34.15 mol, and the number of CO₂ molecules in the balloon is 2.06 x 10²⁵ molecules.

a) The molar mass of CO₂ is 44.01 g/mol. To find the total mass of the balloon and its content, we need to add the mass of the balloon (20g) to the mass of the CO₂ inside the balloon.

Mass of CO₂ = number of moles of CO₂ x molar mass of CO₂

Since the balloon is at STP (standard temperature and pressure), we can use the molar volume of a gas at STP (22.4 L/mol) to find the number of moles of CO₂ in the balloon:

Volume of CO₂ = Volume of balloon = 765 L (at STP)

Number of moles of CO₂ = volume of CO₂ / molar volume of a gas at STP

                                          = 765 L / 22.4 L/mol

                                          = 34.15 mol

Mass of CO₂ = 34.15 mol x 44.01 g/mol

                       = 1501.17 g

Total mass of balloon and its content = 20 g + 1501.17 g

                                                               = 1521.17 g

b) Number of moles of CO₂ in the balloon is 34.15 mol

c) To find the number of CO₂ molecules in the balloon, we need to use Avogadro's number (6.02 x 10²³ molecules/mol).

Number of CO₂ molecules = number of moles of CO₂ x Avogadro's number

                                           = 34.15 mol x 6.02 x 10²³ molecules/mol

                                           = 2.06 x 10²⁵ molecules

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The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

The electrode potential value is 59mV

Temperature=298k

What is electrode potential?

equation formed- Zn → Zn2+ + 2e

              from Nernst equation-

E=E cell - 0.059 log [Zn2+]

[zn2+]=3.481 mol/lit

hence, Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

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Answer:

3.75 mole

Explanation:

molecular mass of NaOH = 39.97 gm

i.e,

==>39.97 gm NaOH contains 1 mole of NaOH

==>1 gm of NaOH contains 1/39.97 mole of NaOH

==>150 gm of NaOH contains (1/39.97) *150 mole of NaOH

==>150 gm of NaOH contains 3.75 mole of NaOH.

The mass of NaHCO₃ needed to generate 0.261 mole of CO₂ is 21.93 grams

First, we shall obtain the number of mole of NaHCO₃ that reacted. Details below:

NaHCO₃ + HCl -> NaCl + H₂O + CO₂

From the balanced equation above,

1 mole of CO₂ was obtained from 1 mole of NaHCO₃

Therefore,

0.261 mole of CO₂ will also be obtain from 0.261 mole of NaHCO₃

Finally, we shall detemine the mass of NaHCO₃ needed. Details below:

Mole = mass / molar mass

0.261 = Mass of NaHCO₃ / 84.01

Cross multiply

Mass of NaHCO₃ = 0.261 × 84.01

Mass of NaHCO₃ = 21.93 grams

Thus, we can conclude that the mass of NaHCO₃  needed is 21.93 grams

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Answer:

3 RbOH + H₃PO₄ → Rb₃PO₄ + 3 H₂O

Explanation:

Let's consider the double-replacement reaction between rubidium hydroxide and phosphoric acid to form rubidium phosphate and water. The cation rubidium replaces the cation hydrogen and the anion hydroxyl replaces the anion phosphate. The balanced chemical reaction is:

3 RbOH + H₃PO₄ → Rb₃PO₄ + 3 H₂O

The amount of volume of KOH solution that should be added to make 500mL of a 0.300M solution is 200mL.

The volume of a solution given the concentration can be calculated using the following expression;

CaVa = CbVb

Where;

According to this question, we are to calculate how many mL of a 0.75 M OH solution that should be added to a 500 mL flask to make 500 mL of a 0.300 M KOH solution.

0.75 × Va = 500 × 0.3

0.75Va = 150

Va = 150/0.75

Va = 200mL

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To solve such this we must know the concept of combination reaction. Therefore, the given reaction CH\(_4\)+Br\(_2\) \(\rightarrow\)CH\(_3\)Br+ HBr is a combination reaction.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

CH\(_4\)+Br\(_2\) \(\rightarrow\)CH\(_3\)Br+ HBr

The above reaction is a combination reaction. In combination reaction, more than one reactant combine to form a product. Because new chemicals are created during combination reactions, they are often referred to as synthesis.

Therefore, the given reaction is a combination reaction.

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Based on the formula to determine the freezing point depression of the solvent, the freezing point of the solution is 263.85 K.

The freezing point of a substance is the temperature at which the liquid changes to solid without any further decrease in temperature occurring during the process.

The addition of solute substances in liquids usually lowers the freezing point of the liquid solvent.

The formula to determine the freezing point depression of solvent is given below:

where'

The molality of the given solution = moles of solute/kg of solvent

moles of solute = 46/92

mass of solvent = 100 g or 0.1 kg

Molality of solution = (46/92) / 0.1

Molality of solution = 5

for glycerine, i = 1

ΔT = ΔT = 1 * 1.86 * 5

ΔT = 9.3

The freezing point of the solution = 273.15 - 9.3

The freezing point of the solution = 263.85 K

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Answer:

a) The empirical formula of the hydrocarbon is CH4.

b) The molecular formula of the hydrocarbon is (CH4) * 1.875 = C1.75H7

Explanation:

(a) To find the empirical formula of the hydrocarbon, we can follow these steps:

Convert the percentages of each element to grams: 80% C = 0.8 * 12 g/mol = 9.6 g C, and 20% H = 0.2 * 1 g/mol = 0.2 g H.

Calculate the number of moles of each element: 9.6 g C / 12 g/mol = 0.8 mol C, and 0.2 g H / 1 g/mol = 0.2 mol H.

Divide each number of moles by the smallest number of moles to find the ratio of the elements: 0.8 mol C / 0.2 mol H = 4, and 0.2 mol H / 0.2 mol H = 1.

(b) To find the molecular formula of the hydrocarbon, we need to know the relative molecular mass (RMM) of the compound, which is given as 30. The empirical formula of the compound is CH4, which has a RMM of 12 + 4 = 16. To find the molecular formula, we need to multiply the empirical formula by a factor that will give us the correct RMM. In this case, we can multiply the empirical formula by a factor of 30 / 16 = 1.875. Multiplying the empirical formula by this factor gives us a molecular formula of (CH4) * 1.875 = C1.75H7.

Answer:

It will take Marvelous 160 miles per hour east to travel 21 miles.

Explanation:

Because 21 times 6= 160 and make sure to add the per hour east because thats the velocity.

Answer:

Explanation:

Density of a substance can be found by using the formula

Making volume the subject we have

From the question

mass of gold nugget = 13 g

Density = 19.3 g/cm³

Substitute the values into the above formula and solve for the volume

We have

= 0.673575

We have the final answer as

Hope this helps you

Answer:

0.674

Explanation:

Answer:

AS THE HYPOTHESIS MEANS THAT OUR THOUGHTS AND FINDINGS SO

PART B  .... RATTLESNAKES VENOM CAN BE USED AS TREATMENT

Explanation:

PLEASE MARK AS BRAINLIEST

Answer:The reactions are as follows: a carbon-12 (12C) nucleus captures a hydrogen nucleus (1H, a proton) to form a nucleus of nitrogen-13 (13N); a gamma ray (γ) is emitted in the process. The nitrogen-13 nucleus emits a positive electron (positron, e+) and becomes carbon-13 (13C).

Answer:

proton :

a particale or atom containing a postive charge

nuutron

a particale or atom that contains a negative charge

electron :

a particale or atom with a negative chrage.

Explanation:

proton:

a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.

nuetron:

a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

elcetron:

a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

How much of the original sample will still be there at the end of the second year if the half-life of a radioactive isotope sample is one year? by the third year's end?

when the fourth year comes to an end? Answer The balance at the conclusion of the second year equals 1 4 times the initial amount. The balance at the conclusion of the third year is equal to 1/8 of the initial amount. Radioactive isotopes that are unstable usually undergo radioactive decay in order to become stable. The nucleus of the isotope undergoes a spontaneous nuclear transition during this event, and particles and energy are released. The decay process causes half of the isotope's initial mass to disintegrate at a specific point in time known as the half-life.

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