caffeine is an alkaloid and, as such, is weakly basic. circle and label the basic atom or atoms. explain why it is the most basic atom. (hint consult the derivative procedure on page 235).

Switch the 3 and the 4, this change must made to the coefficients to balance this equation.

Now, the correct balance equation is C₃H₈ + 5 O₂ → 3 CO₂ + 4H₂O

This method of balancing chemical equations involves assigning algebraic variables as stoichiometric coefficients to each species in the unbalanced chemical equation.

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Mixing an acid and a base does not necessarily neutralize them. Neutralization refers to the situation where equal parts of acid and base are mixed.

If equal parts of a strong acid and a strong base are mixed, the pH of the resulting solution will be very close to 7 depending on factors such as temperature. However, if a strong base is used to neutralize a weak acid the resulting solution will have a pH greater than 7 basic and if a weak base is used to neutralize a strong acid, the resulting pH will be less than 7.

It is therefore not entirely correct to say that all acid-base reactions are examples of neutralization only those where acids and bases are mixed in stoichiometrically equal amounts. Hazardous material spills must be absorbed, neutralized, or controlled in the event of an accident to ensure workplace safety. Neutralization of acids and bases allows for safer handling of spills and reduced disposal costs.

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Answer:

gram (g), kilogram (kg) and tonne (t).

Explanation:

Hair fall is due to weather change and due to humidity in weather. Hair fall can be because of chemical in oil and shampoo.

Chemicals are defined as a substance is a type of matter with a consistent chemical composition and distinct properties.

It can also be defined as a substance that cannot be broken down without undergoing change.

Chemicals are the substances that are used in chemistry experiments.

There are five main types of chemicals.

Some of the common chemicals are

Thus, hair fall is due to weather change and due to humidity in weather. Hair fall can be because of chemical in oil and shampoo.

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An example of radioactivity that occurs when a neutron is converted to a proton and an electron is emitted from the nucleus and emission of a beta particle

Radioactivity is the phenomena in which spontaneous disintegration of unstable atomic nuclei to form more energetically stable atomic nuclei and radioactive decay is the highly exoergic and radioactivity that occurs when a neutron is converted to a proton and an electron is emitted from the nucleus and emission of a beta particle and beta particle is emitted by radioactivity by conversion of neutron to proton and fast moving electron and  radioactive decay by the loss of an electron from the nucleus

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The temperature reading on Fahrenheit scale is related to the The temperature reading on Celsius scale by a linear equation F = 9/5 C + 32

Data for Fahrenheit temperature scale:

Water freezing point = 32⁰

Water boiling point = 212⁰

Therefore, the scale is divided into 212 - 32 = 180 scales.

Data for Celsius temperature scale:

Water freezing point = 0⁰

Water boiling point = 100⁰

Therefore, the scale is divided into 100 - 0 = 100 scales.

Scale ratio:

C : F = 100 : 180 = 5 : 9

It means each increment of 1⁰ on Celsius scale is equal to an increment of 9/5 degree on Fahrenheit scale. However, we need to add an offset 32⁰ on Fahrenheit scale.

Hence,  the reading C⁰ on Celsius scale is equivalent to:

F = 9/5 C + 32

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Answer: Pluto

Explanation: Ok, so Pluto is the farthest. It is 3.7 billion miles away from our sun.

Answer:

the cell wall forms a rigid structure of uniform thickness around the cell and is responsible for the characteristic shape of the cell (rod, coccus, or spiral).

The correct example of a resistor is option (B) a light bulb that impedes the flow of electricity.

A light bulb that impedes the flow of electricity is an example of a resistor.

A resistor is a passive two-terminal electrical element that implements electrical resistance as a circuit element. In digital circuits, resistors are used to reduce modern flow, regulate sign stages, to divide voltages, bias lively elements, and terminate transmission lines, amongst different uses.

A resistor is an electrical thing that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to offer a specific voltage for an lively tool such as a transistor.

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The acceleration for the object from the applied force is 14 m/s².

The height reached by the rocket is 8.28 m.

The acceleration of the ball is calculated by applying Newton's second law of motion as shown below.

F = ma

a = F/m

where;

F is the applied force

a = 3.5 N / 0.25 kg

a = 14 m/s²

The height reached by the rocket at the given time of motion is calculated as follows;

h = vt + ¹/₂gt²

where;

h = 0 + ¹/₂gt²

h  = ¹/₂(9.8)(1.3)²

h = 8.28 m

Thus, the acceleration for the object from the applied force is determined from Newton's second law of motion while the height reached by the rocket is determined by applying the second kinematic equation.

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Answer:

132.12 grams

Explanation:

The mass of a compound equals the number of moles times the molar mass.

The molar mass of hydroxylamine is 33.03 grams/mole

The number of moles is 4 moles

4 moles * 33.03 grams/mole = 132.12 grams

Answer:

there you go man

Explanation:

Based on Beer's law and the data provided (molar absorptivity, number of moles, volume of the solution, cell dimension) we can calculate that the absorbance of the sample will be 0.42336.

According to Beer's law, the measured absorbance is proportional to the molar absorptivity of the substance, its molarity in the sample, and the pathlength of the cell:

A = ε * c * l

ε - molar absorptivity (252 M⁻¹cm⁻¹)

c - molarity of the sample

l - pathlength (6.00 mm = 0.6 cm)

To calculate the absorptivity we need to calculate the molarity of the sample:

c = n/V = 0.00140 mol / 0.5000 L = 0.00280 M

A = 252 M⁻¹cm⁻¹ * 0.00280 M * 0.6 cm = 0.42336

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Answer:

i dint not knowwws wj

example

Explanation:

this is so hard someone give answer

a density is a height and can the numbers

maid that because is too long with a

short 40.-- micality

hope itz help

The theoretical yield of C that is obtained is 13.26 g.

We know that the theoretical yield has to do with the amount of the substance that is obtained as we can get it from the stoichiometry of the balanced reaction equation. Hence the first step that we have to carry out is to try to obtain the balanced reaction equation that can be used to describe the reaction as it has been shown.

The balanced reaction equation is;

6 A(aq) + 7 B(aq) → 7 C(s) + 6 D(g)

Number of moles of A = 4.0 L * 0.20 M = 0.8 moles

Number of  moles of B =  3.0 L * 0.20 M = 0.6 moles

Now;

6 moles of A reacts with 7 moles of B

0.8 moles of A reacts with 0.8 moles * 7 moles/6 moles

= 0.93 moles

Thus B is the limiting reactant.

If  7 moles of B yleds 7 moles of C

Amount of C obtained = 0.6 moles

Mass of C obtained =  0.6 moles *  22.01  g/mol

= 13.26 g

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The mass of water produced is 35.27g in the given chemical reaction.

A chemical reaction is the chemical change of one set of chemical components into another. A chemical reaction is the process through which two or more molecules combine to create a new product(s). Compounds that combine to make new compounds are referred to as reactants, while the newly produced compounds are referred to as products. When chemical bonds between atoms are established or destroyed, chemical reactions occur. Breaking chemical bonds between reactant molecules and establishing new bonds between atoms in product particles are examples of chemical reactions. The number of atoms is the same before and after the chemical transition, but the number of molecules changes.

Balanced equation:

[tex]2C_6H_{14} + 19O_2 \rightarrow 12CO_2 + 14H_2)[/tex]

Given:

Mass of hexane = 43g

Mass of oxygen = 85.1g

To find:

Mass of water formed = ?

Calculations:

According to the balanced equation, 2 moles of hexane react with 19 moles of oxygen to form 12 moles of carbon dioxide and 14 moles of water.

Molar mass of hexane = 86.118g/mol

Molar mass of oxygen = 32g/mol

(2 x 86.118)g of hexane required = (19 x 32)g of oxygen

43g of hexane required = (19 x 32) / (2 x 86.118) x 43

= 151.79g of oxygen

But we have only 85.1g of oxygen, thus it is a limiting reagent

Now,

(19 x 32)g of oxygen reacts to produce = (14 x 18)g of water

85.1g of oxygen reacts to produce = (14 x 18) / (19 x 32) x 85.1

= 35.271g of water

Result:

35.27g of water is produced.

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The bubbles indicate that a gas is created and mass is lost as it escapes from the container.

Why stduent is told that the both energy and the mass must be conserved in every chemical reaction?

According to the the law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed.So that the student told that both the energy and mass must be conserved in every chemical reaction.

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Answer:vinegar will disolve in water, water will not go into veg oil because it is polar.

rubbing alcohol will disolve in water and not in vegtable oil because it is nonpolar

salt will disolve and water will not disolve in veg oil because it is ionic

Explanation:

Answer:

a) The subshell would be 5g .

b) Yes L can be bigger than 3 in case of n=5.

Explanation:

a) The given principle quantum number n=5 signifies the 5th orbit. Also, the given Azimuthal quantum number l=4 represents the g subshell. Thus, the subshell in which the electrons with the given set of principle and azimuthal quantum number are found is 5g.

b) As n=5 and the general rule is l=n-1. So L can be equal to 1,2,3 or 4.

The unbalanced chemical equation is:  Na + H₂O → NaOH + H₂

The unbalanced chemical equation in words: One mole of sodium atom reacts with one mole of water to form one mole of sodium hydroxide and one mole of hydrogen gas.

The number of atoms on the reactant side is: 1 Na, 2 H, and 1 O

The number of atoms on the product side is: 1 Na, 3 H, and 1 O

Chemical equations are equations that use the symbols of the elements to represent the chemical reaction that occurs between elements or compounds called reactants to form products.

A chemical equation may be balanced or unbalanced.

A chemical equation is unbalanced when the number of moles of atoms of each element reacting is not equal on both sides of the reaction.

A chemical equation is balanced when the number of moles of atoms of each element reacting is equal on both sides of the reaction.

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Answer:The specific heat of water is 1 calorie/gram °C = 4.186 joule/gram °C.

Explanation:Therefore the required amount of energy is following:

Q = c*m*dT = 4.186 * 120 * (24 - 2) = 11,051 J

A controlled variable is one that is constant and is unchanged in an experiment. It is held constant in order to observe the result of the independent variable.

An independent variable is the variable that is being changed in the experiment in each trial, while a dependent variable is the one that is being measured.

Answer:

A column in the periodic table of the chemical elements.

Answer:

A group is the arrangement of elements vertically, in the periodic table. It can be determined by the number of valence electrons present in the atom.

The populations of axolotls that are raised in captivity are able to regrow limbs but those grown in the wild can not.

The axolotls are one of the populations of the organisms that are facing the threat of extinction. This implies that if nothing is seriously done to ensure that the populations do not go into extinction, they would all soon disappear from the face of the earth.

The response to this situation have been to ensure that the there is a conscious effort to make sure that the axolotls does not disappear from the face of the earth and most of this effort have been made by raising some populations in captivity. The populations raised in the wild are different from those raised in captivity.

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Based on the balanced reaction equation, 9 moles of carbon dioxide are formed when 3 moles of propane are combusted.

From the balanced reaction equation we can see that 3 moles of carbon dioxide are formed upon the combustion of a single mol of propane:

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

These molar ratios are constant and enable us to set up a simple proportion:

1 mol of propane : 3 mol of carbon dioxide = 3 mol of propane : X

X = 3 mol of carbon dioxide * 3 mol of propane / 1 mol of propane

X = 9 mol of carbon dioxide

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Answer:

Your search - 74.22g lithium bromide is dissolved in 52.71 mL water. Calculate the molarity of the solution. - did not match any documents.

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Because red and its complementary hue, green, are communicated, we see CoCl2 as a red color. Green, however, is its complementary color and is what is absorbed. The only color that can be seen is the color that is communicated. Red is what we can see, not green.

The logarithm of the ratio of incident to transmitted radiant power through a sample is known as absorbance. As an alternative, absorbance can be defined as "the negative logarithm of one minus absorptance, as measured on a homogeneous sample," for samples that scatter light.

As opposed to absorption, which occurs when electrons move up to a higher energy state from a lower energy state, emission occurs when electrons move down to a lower energy state, giving rise to a negative energy. When electrons undergo an energy change that is positive and migrate from one state of lower energy to another, this is called absorption. The color that can be seen by the eye is called the transmitted color, whereas the color that cannot be seen is called the absorbed color. The ntary color is discernible.

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Answer: 26g

Explanation:

First, write the correctly balanced equation for the reaction taking place:

HBr(aq) + NaOH(s) ==> NaBr(aq) + H2O(l) ...  balanced equation

Next, find out which reactant is limiting. An easy way is to just divide the moles of each reactant by the corresponding coefficient in the balanced equation (1 for both in this case):

HBr:  46.1 g HBr x 1 mol HBr / 80.9 g = 0.570 moles

NaOH:  10. g NaOH x 1 mol NaOH / 40. g = 0.25 mols NaOH

NaOH is limiting and will determine the maximum amount of product that can form.

Maximum amount of NaBr that can form:

0.25 mols NaOH x 1 mol NaBr / 1 mol NaOH x 103 g NaBr / mol = 25.75 g NaBr = 26 g NaBr (2 s.f.)

The calories needed to melt the ice is 236.8 calories.

Heat of fusion also called latent heat is the heat constant needed to change the phase of a material such as solid to liquid or liquid to gas. The total calories or energy needed depends on the mass of and the heat of fusion and mass. It can be written as

Q = m . L

where Q is total heat, m is mass and L is latent heat.

From the question above, the given parameters are

m = 2.96 g

L = 80 cal/g

By substituting the mass and heat of fusion, we can calculate the total calories

Q = m . L

Q = 2.96 . 80

Q = 236.8 cal

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The calculated molar volume of hydrogen will be too high as a result of this error

The gas being recorded during the experiment would not only include hydrogen gas, but the air that leaked into the eudiometer tube as well. This leads to the increase in the volume of hydrogen gas which will be too high. Since the volume of hydrogen is too high,  the calculated molar volume of hydrogen would also be too high.

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