Pseudoephedrine elixir contains 30 milligrams per teaspoon. The daily retail sales limit for pseudoephedrine is 3.6 grams. How many ounces of elixir is equivalent to 3.6 grams?
Answer:
Explanation:
Pseudoephedrine elixir contains 30 milligrams per teaspoon. The daily retail sales limit for pseudoephedrine is 3.6 grams. How many ounces of elixir is equivalent to 3.6 grams?
convert 3.6 grams to milligrams
3.6*1000
3600milligrams
but
30mg=1 teaspoon
3600mg=x teaspoon
120 teaspoon
but 1ounce=6 teaspoon
x=120 teaspoon
x=20 ounce
Therefore the daily limit of Pseudoephedrine elixir will be 20 Ounce
Carbonyl fluoride, cof2, is an important intermediate used in the production of fluorine-containing compounds. for instance, it is used to make the refrigerant carbon tetrafluoride, cf4 via the reaction 2cof2(g)⇌co2(g)+cf4(g), kc=8.90 if only cof2 is present initially at a concentration of 2.00 m, what concentration of cof2 remains at equilibrium?
Final answer:
To find the equilibrium concentration of COF2, we use the equilibrium constant Kc = 8.90 and set up a quadratic equation based on the initial concentration of COF2. Solving this gives us the concentration of COF2 remaining at equilibrium, which is approximately 1.58 M.
Explanation:
Equilibrium Calculation for Carbonyl Fluoride Reaction
To determine the concentration of COF2 that remains at equilibrium, we'll use the equilibrium constant and the initial concentration. The chemical equilibrium reaction is:
2COF2(g) ⇌ CO2(g) + CF4(g)
The equilibrium constant (Kc) for this reaction is 8.90. If only COF2 is present initially at a concentration of 2.00 M, let's define the change in concentration for COF2 at equilibrium as 'x'. This means at equilibrium, the concentration of COF2 will be (2.00 - 2x), and the concentrations of CO2 and CF4 will both be 'x' because they are produced in a 1:1 ratio.
The equilibrium expression is:
Kc = [CO2][CF4] / [COF2]2
Substituting the known values and expressions for equilibrium concentrations, we get:
8.90 = (x)(x) / (2.00 - 2x)2
This is a quadratic equation in the form of ax2 + bx + c = 0. By solving this quadratic equation, we can find the value of 'x' and therefore the equilibrium concentration of COF2. After calculation, the concentration of COF2 remaining at equilibrium is approximately 1.58 M.
Benzene is the simplest example of _____ compound.
i know the answer is aromatic but can someone explain why please
Which statement describes a process involved in the evolution of Earth’s early atmosphere?
- Cyanobacteria transformed carbon dioxide in the atmosphere into oxygen during photosynthesis.
- Heavier gases escaped through Earth’s atmosphere, leaving only lighter gases such as oxygen behind.
- Volcanic eruptions produced enough oxygen to create Earth’s atmosphere.
- The amount of oxygen in the atmosphere declined due to respiration, or breathing.
The early atmosphere was reducing but became oxidizing when Cyanobacteria transformed carbon dioxide in the atmosphere into oxygen during photosynthesis.
What was the nature of the early atmosphere of the earth?The early atmosphere of the earth was a reducing in nature unlike the present atmosphere.
Changes that occurred in the organisms on earth helped to convert the early atmosphere to an oxidizing one.
Cyanobacteria transformed carbon dioxide in the atmosphere into oxygen during photosynthesis thereby releasing oxygen into the atmosphere and making it oxidizing in nature.
Learn more about early atmosphere at: https://brainly.com/question/11106500
The reaction that takes place when iron metal combines with aqueous hydrochloric acid.
Calculate the volume of 76.2 mole of propane gas,C3H8, if the molar volume is 55.0L/mol.
The rate constant is found to be 3.9 x 10-5 M-1 s-1. Calculate the rate of formation of ozone when the concentration of oxygen atoms is 3.0 x 10-14 molar and the concentration of diatomic oxygen is 1.3 x 10-14 molar.
The chemical breakdown of enormous quantities of organic material buried in the sedimentary rocks has produced ____ gas.
Answer: Methane
Explanation:
The sedimentary rocks includes enormous amounts of organic matter that is produced by the decomposition and degradation of the dead matter from plants and animals. These rocks may exhibit methane gas a valuable fossil fuel. It is a greenhouse gas. The burning of one molecule of this gas produces one molecule of carbon dioxide and two molecules of water.
Which of these is a property of liquids?
I. viscosity
II. surface tension
III. volatility
I and II
II and III
I and III
I, II, and III
2. This graph can best be described as a
a. Bar graph
b. Exponential graph
c. Logistic growth graph
d. Line graph
What would the products of a double-replacement reaction between ca3n2 and al2o3 be?
What determines the color of the egg shell ?
what substance is considered to be the "universal" solvent? why?
Water is called the "universal solvent" due to its ability to dissolve many substances, which is crucial for supporting life. This is because of the polar nature of water molecules that allows them to interact with various compounds, making water indispensable for chemical reactions in the body and ecosystems.
Explanation:Water (H₂O) is often referred to as the "universal solvent" because of its exceptional ability to dissolve many different substances, which is essential for life. This property is due to the polar nature of water molecules, which have a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atoms.
Solvent power is one of water's significant features; it can form true solutions with many substances, resulting in homogeneous mixtures. Water's polarity enables it to dissolve not only polar and ionic compounds, which are hydrophilic or "water-loving," but also to interact with nonpolar compounds, albeit less readily.
Water's ability to dissolve a myriad of substances makes it an ideal environment for cellular components to react and facilitate chemical reactions necessary for life. Moreover, water's role as a solvent is crucial in biological systems where it dissolves nutrients and other essential compounds, facilitating their transport and chemical reactions within the body.
What coefficients are needed to balance the following equation?
H2O + Fe Fe2O3 + H2
The coefficients needed to balance the equation H2O + Fe → Fe2O3 + H2 are 4H2O + 3Fe → Fe2O3 + 4H2. These coefficients ensure the number of atoms of each element is the same on both sides of the equation.
Explanation:To balance the equation H2O + Fe → Fe2O3 + H2, we need to ensure that the number of each type of atom on the left side of the equation matches the number on the right side. The balanced equation would be: 4H2O + 3Fe → Fe2O3 + 4H2. Here, we are using stoichiometry which is a part of chemical reactions. In balancing chemical equations, coefficients are used in front of the chemical formulas to indicate the number of molecules or atoms involved in the reaction.
Learn more about Chemical Reactions here:https://brainly.com/question/34137415
#SPJ2
In an exothermic reaction, energy may be released to the surroundings in the form of
Explanation:
A reaction in which energy is released in the form of heat is known as exothermic reaction.
General reaction equation for exothermic reaction is as follows.
[tex]Reactants \rightarrow Products + Energy[/tex]
For example, lightening a candle is an exothermic reaction.
Thus, we can conclude that in an exothermic reaction, energy may be released to the surroundings in the form of heat.
A scientist is measuring the rate of an enzyme-catalyzed reaction that produces a red-colored product. as the solution containing the product becomes more concentrated, how do you predict absorbance (a) and transmittance (t) to change?
Answer: Absorbance will increase; Transmittance will decrease
Explanation:
According to the Beer-Lambert law the attenuation of light depends on the material it is travelling through. The Beer-Lambert Equation is defined by A = ε l c.
A = Absorbance of light by the material
ε = molar extinction co-efficient of the material
l = path length of light
c= concentration of the material
In this case the material is the substance producing red color.
From the above equation absorbance (A) is directly proportional concentration, then absorbance will increase with increase in concentration of the product.
Transmittance (t) is the amount of light able to be transmitted through the material. Thus absorbance and transmittance are inversely proportional and defined by the Equation: Absorbance = 2 - log (%T)
%T = Fraction of light that is transmitted, an increase in absorbance will cause a decrease in transmittance.
Which of the following describes a saturated solution?
A. One containing 1 g of sugar in 100 mL of water.
B. One that contains as much solute as it can hold at a given temperature.
C. One that contains less solute than it can hold at 25oC.
D. One in which the ratio of solute to solvent is small.
E. One that is equivalent to a supersaturated solution.that is equivalent to a supersaturated solution.
Final answer:
The correct answer is B. One that contains as much solute as it can hold at a given temperature. This is because a saturated solution is exactly that; it has reached its solubility limit for solute at a specific temperature and cannot dissolve any more of that solute.
Explanation:
A saturated solution is one in which the maximum amount of solute that can be dissolved by the solvent at a given temperature has been reached. If no more solute can be dissolved at that temperature, the solution has reached its solubility limit. This is in contrast to an unsaturated solution, where less solute is dissolved than the solvent can hold at that temperature. Furthermore, a supersaturated solution contains more solute than the normal solubility limit due to special circumstances, such as being carefully cooled after being heated to dissolve the extra solute, but this is not a stable state.
Considering the options provided:
A. This is an example of a solution but does not specify if it is saturated or not.B. One that contains as much solute as it can hold at a given temperature. This is the correct definition of a saturated solution.C. This describes an unsaturated solution.D. This statement is about dilution, which does not indicate saturation.E. A supersaturated solution is different from a saturated solution as it contains more solute than what is normally possible at a given temperature.Scientists' evidence for an expanding universe is called a (blueshift, yellowshift, redshift, greenshift) because the light waves emitted by stars and galaxies are shifting toward the (yellow, blue, green, red) end of the visible color spectrum.
Answer: Expansion of universe is called the red shift and the light emitted by stars and galaxies is red light.
Explanation: As the universe is expanding, the relative distance is increasing from the Earth, hence causing an increase in the wavelength.
Red shift occurs when there is increase in wavelength. Hence, the light will shift towards the red end of the visible light.
The stars and galaxies are also farther away from the Earth, hence they also have a larger wavelength and will shift the light to the red end of the visible spectra.
If you inherit half of your genes from your mother and half of your genes from your father, what percent of your genes did you inherit from each of your grandparents?
Final answer:
An individual inherits approximately 25% of their genes from each grandparent. Environmental factors and personal experiences further contribute to variations from parents. Nuclear DNA is inherited evenly from both parents, while mitochondrial DNA is solely from the mother.
Explanation:
Every individual inherits 50% of their genes from each parent. Consequently, the genes you get from your mother will include half of her genetic material, of which 50% is derived from her father (your maternal grandfather) and 50% is derived from her mother (your maternal grandmother).
The same pattern applies to your father's contribution to your genes - half from your paternal grandfather and half from your maternal grandmother. Therefore, you inherit about 25% of your genes from each grandparent.
Personal experiences and the environment play significant roles in making you different from your parents despite the genetic similarities. These factors contribute to the unique expression of your genes, resulting in individual variations in appearance, personality, and other traits.
Moreover, it's important to distinguish between nuclear DNA, which follows the 50% inheritance from each parent, and mitochondrial DNA (mtDNA), which is inherited exclusively from the mother.
In the Lewis dot structure for NH3, the central atom of the molecule has three atoms bonded to it and one lone pair of electrons. mc006-1.jpg The shape of an NH3 molecule is
Answer:
Trigonal pyramidal
Explanation:
Edge
What is the IMA of the inclined plane shown?
6
3
6.75 (not the answer)
Answer:
[tex]IMA = 3[/tex]
Explanation:
The ideal mechanical advantage of the inclined plane is:
[tex]IMA = \frac{L}{h}[/tex]
[tex]IMA = \frac{4.5\,m}{1.5\,m}[/tex]
[tex]IMA = 3[/tex]
What is the volume, in mL, of 0.50 moles of ammonia (NH3) at STP?
A. 1120 L
B. 22.32 mL
C. 8500 mL
D. 11,200 mL
Final answer:
The volume of 0.50 moles of ammonia at STP is calculated by multiplying the number of moles by the standard molar volume (22.41 L) resulting in 11,205 mL, making option D (11,200 mL) the closest correct answer.
Explanation:
To find the volume of 0.50 moles of ammonia (NH₃) at STP, we use the concept of the standard molar volume of a gas. The standard molar volume is the volume occupied by one mole of any gas at Standard Temperature and Pressure (STP), which is defined as 0°C (273 K) and 1 atm pressure. For any ideal gas, which includes ammonia under these conditions, this volume is 22.41 liters (L).
Therefore, to calculate the volume occupied by 0.50 moles of NH₃ at STP, we multiply the number of moles by the standard molar volume:
Volume = 0.50 moles × 22.41 L/moleVolume = 11.205 LSince the question asks for the volume in milliliters (mL), we convert liters to milliliters by remembering that 1 L = 1000 mL:
Volume = 11.205 L × 1000 mL/LVolume = 11,205 mLTherefore, the correct answer is D. 11,200 mL, which is the closest to our calculated volume of 11,205 mL.
A reaction requires 22.4l of at stp. You have 32.0l of gas at 398k and 105.6 kpa. Will you have enough gas to carry out the reaction? True or false
To determine if you have enough gas to carry out a reaction, compare the gas volume at the given conditions to 22.4L at STP.
Whether you have enough gas to carry out the reaction can be determined by comparing the known volume at STP to the volume you have at the given conditions of 398K and 105.6 kPa.
If you have 32.0L of gas at 398K and 105.6 kPa, you need to calculate the volume that gas would occupy at STP using the ideal gas law and compare it to 22.4L, which is the volume needed for the reaction at STP.
If the volume at STP is greater than 22.4L, then you have enough gas to carry out the reaction. Otherwise, you do not have sufficient gas volume.
How many liters of carbon dioxide will be formed from the decomposition of 14.1g of calcium carbonate (at stp)?
Firstly, according to Ideal Gas Law the volume of 1 mole of a gas at Standard Temperature and Pressure (STP) is 22.4 [tex] dm^{3} [/tex], ie the value of the molar volume (Vm) is 22.4 [tex] dm^{3} [/tex]/mol.
[tex]CaCO_{3} = CaO + CO_{2} [/tex]
From the reaction, it can be seen that [tex]CaCO_{3} [/tex] and [tex]CO_{2} [/tex] have the following amount of substance relationship:
[tex]n(CaCO_{3}) = n(CO_{2}) = 1:1[/tex]
From the relationship we can determinate moles of [tex]CO_{2} [/tex] :
[tex]n(CaCO_{3}) = n(CO_{2}) = n/M= 14.1/100=0.141 moles[/tex]
Finally, we can calculate the volume of formed CO2:
V([tex]CO_{2} [/tex] )=nxVm=0.141x22.4=3.16 [tex] dm^{3} [/tex]
The ka of propanoic acid (c2h5cooh) is 1.34 × 10-5. calculate the ph of the solution and the concentrations of c2h5cooh and c2h5coo– in a 0.193 m propanoic acid solution at equilibrium.
The pH and concentrations of C2H5COOH and C2H5COO– in a 0.193 M propanoic acid solution at equilibrium can be calculated using the given Ka and the formula for pH. The initial, change and equilibrium concentrations are used for these calculations.
Explanation:To calculate the pH and concentrations of C2H5COOH and C2H5COO– in a 0.193 M propanoic acid solution at equilibrium, we start by setting up the ICE (initial, change, equilibrium) table for the reaction. Ka = [H3O+][C2H5COO-] / [C2H5COOH], where H3O+, C2H5COO-, and C2H5COOH are equilibrium concentrations. Since the Ka for propanoic acid is given as 1.34 × 10-5, we can say that [H3O+] = sqrt(1.34 × 10-5 * 0.193).
We perform this calculation to find [H3O+], from which we find the pH = -log[H3O+]. The concentrations of C2H5COOH and C2H5COO– are both equal to 0.193 M in a 0.193 M solution of propanoic acid at equilibrium, as propanoic acid is a weak acid and partially ionizes in solution, leading to the same concentration at equilibrium.
Learn more about Acid-Base Equilibrium here:https://brainly.com/question/30725131
#SPJ2
A six carbon carbohydrate would have how many hydrogen atoms?
How many calories does unsaturated fat provide per gram?
If 36.0 g of mgso4⋅7h2o is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?
Answer: The mass of anhydrous magnesium sulfate that will remain is 17.6 grams.
Explanation:
To calculate the number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] .....(1)
Given mass of [tex]MgSO_4.7H_2O[/tex] = 36.0 g
Molar mass of [tex]MgSO_4.7H_2O[/tex] = 246.47 g/mol
Putting values in equation 1, we get:
[tex]\text{Moles of }MgSO_4.7H_2O=\frac{36.0g}{246.47g/mol}=0.146mol[/tex]
The chemical equation for the heating of [tex]MgSO_4.7H_2O[/tex] follows:
[tex]MgSO_4.7H_2O\rightarrow MgSO_4+7H_2O[/tex]
By Stoichiometry of the reaction:
1 mole of [tex]MgSO_4.7H_2O[/tex] produces 1 mole of anhydrous magnesium sulfate.
So, 0.146 moles of [tex]MgSO_4.7H_2O[/tex] will produce = [tex]\frac{1}{1}\times 0.146=0.146mol[/tex] of anhydrous magnesium sulfate
Now, calculating the mass of anhydrous magnesium sulfate by using equation 1, we get:
Molar mass of anhydrous magnesium sulfate = 120.37 g/mol
Moles of anhydrous magnesium sulfate = 0.146 moles
Putting values in equation 1, we get:
[tex]0.146mol=\frac{\text{Mass of anhydrous magnesium sulfate}}{120.37g/mol}\\\\\text{Mass of anhydrous magnesium sulfate}=(0.146mol\times 120.37g/mol)=17.6g[/tex]
Hence, the mass of anhydrous magnesium sulfate that will remain is 17.6 grams.
What PROPERTIES of elements visibly show periodic trends when their values are graphed?
Final answer:
Properties of elements that visibly show periodic trends when their values are graphed include atomic size, ionization energy, and electron affinity.
Explanation:
The properties of elements that visibly show periodic trends when their values are graphed include atomic size, ionization energy, and electron affinity.
Atomic size, or atomic radius, generally increases as you move down a group (vertical column) in the periodic table. This is because additional energy levels or electron shells are added as you move down, resulting in larger atomic size.
On the other hand, ionization energy, which is the energy required to remove an electron from an atom, generally increases as you move across a period (horizontal row) from left to right in the periodic table. This is because the atomic size decreases and the attraction between the positively charged nucleus and the negatively charged electron increases, making it more difficult to remove an electron.
Lastly, electron affinity, which is the energy change when an atom gains an electron, also shows periodic trends. Electron affinity generally becomes more negative (increases) as you move across a period from left to right, except for a few exceptions. This is because atoms on the right side of the periodic table have a higher effective nuclear charge, which makes it easier for them to attract and gain electrons.
If the compound has a molar mass of 156 g/mol, what is its molecular formula?
The molecular formula of the compound is C10H20O.
The question is incomplete, the complete question is;
Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1005-g sample of menthol is combusted, producing 0.2829 g of CO2 and 0.1159 g of H2O. What is the empirical formula for menthol? If the compound has a molar mass of 156 g/mol, what is its molecular formula?
First we have to obtain the mass/moles of each element;
Mass of C;
0.2829 g/44g/mol * 12 g/1 mol = 0.077 g of C
Number of moles of C = 0.077 g of C/ 12 g/mol = 0.0064 moles
Mass of H;
0.1159 g/18g/mol * 2g/1mol = 0.0129 g of H
Number of moles of H = 0.0129 g of H/1 g/mol = 0.0129 moles
Mass of O = 0.1005 g - (0.077 g + 0.0129 g)
Mass of O = 0.1005 g - 0.0899
= 0.0106 g
Number of moles of O = 0.0106 g/ 16 g/mol = 0.000663 moles
Dividing through by the lowest number of moles;
C - 0.0064/0.000663 H - 0.0129/0.000663 O - 0.000663/0.000663
C - 10 H - 20 O - 1
Empirical formula; C10H20O
Since the molecular formula is 156 g/mol
(C10H20O)n = 156
Where n is the number of each atom in the compound
(120 + 20 + 16)n = 156
156n = 156
n = 1
Hence the molecular formula of the compound is C10H20O.
Learn more: https://brainly.com/question/14530520