Select the correct answer.
Some medications or remedies bought "over the counter" can be dangerous and even life threatening.
A.
True
B.
False

Answers

Answer 1

Answer:

A. True

Explanation:

many over-the-counter (OTC) drugs that can be abused and even habit-forming, with potentially life-threatening consequences.

Answer 2

Answer:

True

Explanation:

Anything is dangerous if used the wrong way

Related Questions

What would be the effect on the calculated ratio (mole of copper:mole of iron) if:
(a)some iron had been spilt?

(b)The iron fillings were not 100% pure?

(c)Some copper had been spilt?

(d)The copper was not completely dry?

Answers

Explanation:

Since the ratio is Cu/Fe, if some Fe were lost due to spillage, the Cu/Fe ratio would INCREASE because Fe would be lower.

If some iron or copper got spilt from the vessel, then their mole ratio gets reduced with the second reactant. If the iron fillings were not completely pure, thein the impurities also weigh for the whole.

What is mole ratio ?

The mole ratio of elements in a compound is the ratio between the number of moles of elements. The mole ratio might changes with the reaction conditions, presence of impurities and personal errors during the weight measurement.

a. If the iron had spilt after it is weighed, then, the mole ratio of iron gets reduced. c. The same happens for copper if copper spilt away.

b. If the iron fillings are not completely pure, the weight of impurities also contributes to the total weight and thus, the mole ratio we calculated will be higher than the original.

d. If the copper was not completely dry, the some moisture will contribute to its weight and the calculated mole ratio will increase for copper.

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What is the volume of 1g of ice in cm3?

Answers

Answer:

What is the volume of 1g of ice in cm3?

Explanation:

In the figure, which two lines appear to be parallel?

Answers

I don’t understand. Is there a picture? Where are the options?

To infer means to do what?

A. reach a conclusion about data

B. make a hypothesis about data

C. decide to collect some more data

D. state something found indirectly from data

Answers

Answer:

Explanation:

infer means use data to reach conclusion.

water can be made using the reversible reaction shown, which change would kee
p this reaction from shifting to form more of the product?

Answers

We can produce more products by;

A. Increasing the concentration of H₂ gas in the reaction vessel

B. Decreasing the temperature in the reaction vessel

C. Removing the H₂O from the reaction vessel as it forms

Is formation of water an exothermic reaction?

Water is created through an exothermic process. Heat energy is released when hydrogen gas (H2) and oxygen gas (O2) mix to make water (H2O). An exothermic reaction is characterized by this energy release.

The reaction's overall energy change is negative, which shows that energy is released. The reaction is exothermic because the extra energy is released as heat into the environment.

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Missing parts;

Water can be made using the reversible reaction shown. Which change would

keep this reaction from shifting to form more of the product?

2H₂+022H₂O + energy

A. Increasing the concentration of H₂ gas in the reaction vessel

B. Decreasing the temperature in the reaction vessel

C. Removing the H₂O from the reaction vessel as it forms

D. Increasing the temperature in the reaction vessel

2.50 g of As2O3 are titrated with 38.5 mL of KMnO4 to reach the end point.
5As2O3(s)+4MnO−4(aq)+9H2O(l)+12H+(aq)⟶10H3AsO4(aq)+4Mn2+(aq)
Calculate the concentration of the KMnO4 solution.

Answers

50 g of As$_2$O$_3$ are titrated with 38.5 mL of KMnO$_4$ to reach the end point. 0.26M is the concentration of the KMnO$_4$ solution.

Concentration in chemistry refers to the quantity of a material in a certain area. The ratio of the solute within a solution to the solvent or whole solution is another way to define concentration. In order to express concentration, mass in unit volume is typically used.

The solute concentration can, however, alternatively be stated in moles or volumetric units. Concentration may be expressed as per unit mass rather than volume.

5As$_2$O$_3$(s)+4MnO$_4$⁻(aq)+9H$_2$O(l)+12H⁺(aq)⟶10H$_3$AsO$_4$(aq)+4Mn$_2$⁺(aq)

the stoichiometry ratio between As$_2$O$_3$ and MnO$_4$⁻ is 5:4

0.0126 moles of As$_2$O$_3$ will react with 4/5×0.0126 moles = 0.01008moles

0.01008moles of MnO$_4$⁻ is present in 38mL

concentration of KMnO$_4$= moles×volume

= 0.010/38×1000

=0.26M

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This group of fungi forms spores in a round structure on the end of a hyphae

Answers

Answer:

Is zygote fungi an option??

Answer:

zygote fungi

Explanation:

i got the answer right

An energy of 4.50x10^-19 J/photon was released when an electron drops to a lower energy state, what is the wavelength of the photon? What color does this energy correspond to?

Answers

4.41 × 10⁻⁴⁵m is the wavelength of the photon and the energy correspond to red color.

What do you mean by the wavelength ?

The term wavelength is defined as the distance between two identical points that are adjacent crests and troughs.

The SI unit of wavelength is metre mostly represented as m.

The wavelength is mostly represented by λ is the Greek letter lambda.

Given:

E = 4.50x10⁻¹⁹ J/photon

h = Planck constant = 6.626 × 10⁻³⁴

ν = ?

E = hν

ν = E/h

By substituting the values in above question and we get,

= 4.50x10^-19 / 6.626 × 10⁻³⁴

= 0.679 × 10⁻¹⁵

c = 3 × 10⁸

E = hc/λ

λ = hc/E

By substituting the values in above question and we get,

λ = 6.626 × 10⁻³⁴ × 3 × 10⁸ / 4.50x10⁻¹⁹

λ = 4.41 × 10⁻⁴⁵m

Thus, the wavelength of the photon is 4.41 × 10⁻⁴⁵m and color does this energy correspond to red.

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Define voltaic ???!!!

Answers

A voltaic cell is used to produce electrical energy with the help of chemical reactions.

What is a voltaic cell?

Relating to, or producing direct electric current by chemical action.

A Voltaic Cell (also known as a Galvanic Cell) is an electrochemical cell that uses spontaneous redox reactions to generate electricity. It consists of two separate half-cells.

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how many grams of O2 are produced when 0.065 mol of water decompose ?

Answers

Answer: The answer is 0.52 grams.

2H2O->2H2+O2

So, we can say that,

2 moles of water= 16 gm of O2

Then

0.065 moles of water=16/2*0.065 gm

=0.52 gm

Hope you understood:)

PNS
Chemoto
P to explain the how density Can
Conversion factor
lobject
95
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be used
the volume
of
object, and
and vise
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Answers

Answer:

uhhhh rephrase that please lol

129.13 mL of a 112.9 mM solution of NH4l is added to a 105.31 mL solution of 0.87 M Mgl2. What
is the final concentration of I ions in the resulting solution? Express your answer in units of
molarity using at least three significant figures.

Answers

The final concentration of I ions in the resulting solution is approximately 0.0311 M, expressed with three significant figures.

To determine the final concentration of I ions in the resulting solution, we need to consider the stoichiometry and volumes of the solutions being mixed.Given:

Volume of NH4l solution = 129.13 mL

Concentration of NH4l solution = 112.9 mM = 0.1129 M (converting from millimolar to molar)

Volume of Mgl2 solution = 105.31 mL

Concentration of Mgl2 solution = 0.87 M

First, we need to determine the moles of NH4l and Mgl2 in their respective solutions:

Moles of NH4l = Volume of NH4l solution * Concentration of NH4l solution

Moles of NH4l = 0.12913 L * 0.1129 M = 0.01459 moles NH4l

Moles of Mgl2 = Volume of Mgl2 solution * Concentration of Mgl2 solution

Moles of Mgl2 = 0.10531 L * 0.87 M = 0.09157 moles Mgl2

Next, we determine the limiting reagent, which is the reactant that is completely consumed and determines the maximum amount of product formed. In this case, the limiting reagent is NH4l because it has fewer moles than Mgl2.

The balanced chemical equation for the reaction between NH4l and Mgl2 is:

2 NH4l + Mgl2 → 2 NH4+ + MgI2

From the balanced equation, we can see that for every 2 moles of NH4l, we get 1 mole of MgI2.

Since the moles of NH4l is the limiting reagent, it will be completely consumed, and the moles of MgI2 formed will be half of the moles of NH4l.

Moles of MgI2 = 0.01459 moles NH4l * (1 mole MgI2 / 2 moles NH4l) = 0.007295 moles MgI2

Finally, we calculate the final concentration of I ions in the resulting solution:

Volume of resulting solution = Volume of NH4l solution + Volume of Mgl2 solution

Volume of resulting solution = 0.12913 L + 0.10531 L = 0.23444 L

Final concentration of I ions = Moles of MgI2 / Volume of resulting solution

Final concentration of I ions = 0.007295 moles / 0.23444 L = 0.0311 M

Therefore, the final concentration of I ions in the resulting solution is approximately 0.0311 M, expressed with three significant figures.

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Michelle is trying to find the average atomic mass of a sample of an unknown
element. She finds that her sample contains 59.34% of an isotope with a mass of
113.6459, while the rest of the sample is an isotope with a mass of 115.8488. What
is the average atomic mass of her sample? Please round your answer to 0.01 amu.

Answers

The average atomic mass of her sample is 114.54 amu

Let the 1st isotope be A

Let the 2nd isotope be B

From the question given above, the following data were obtained:

Abundance of isotope A (A%) = 59.34% Mass of isotope A = 113.6459 amuMass of isotope B = 115.8488 amuAbundance of isotope B (B%) = 100 – 59.34 = 40.66%Average atomic mass =?

The average atomic mass of the sample can be obtained as follow:

$Average \: atomic \: mass \: = \frac{mass \: of \: A \times A\%}{100} + \frac{mass \: of \: B \times B\%}{100} \\ \\ Average \: atomic \: mass \: = \frac{113.6459\times 59.34}{100} + \frac{115.8488\times 40.66}{100} \\ \\ Average \: atomic \: mass \: = 114.54 \: amu \\ \\ $

Thus, the average atomic mass of the sample is 114.54 amu

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5.1 g sodium carbonate solution was dissolved in water to make 500cm³ of solution.20cm³ of this solution was tirated against 20.45 cm³ of 0.04M hydrochloric acid . Calculate the % of purity of the sodium carbonate solid

Answers

Answer:

We know that, Va= 20.45 cm³, Vs= 20 cm³, Ma= 0.04M . But molar mass of Na₂CO₃ = 106. So, concentration (g/dm³) = 0.02045 × 106 = 2.1677 g/dm³. Hence, The percentage purity of the sodium carbonate solid is 21.25%.

Which statement defines dynamic equilibrium? A state of balance in which the rates of the forward and reverse reactions are equal. A state of balance in which the forward reaction stops but reverse reaction continues. A state of balance in which the forward reaction continues but reverse reaction stops. A state of balance in which the forward and reverse reactions stop.

Answers

Answer:

A state of balance in which the rates of the forward and reverse reactions are equal.

Explanation:

The dynamic equilibrium is a state of balance in which the rates of the forward and reverse reactions are equal, like we can see in the following drawing:

And the concentration of the reactants and products become stable in time.

Which statement defines dynamic equilibrium? A state of balance in which the rates of the forward and

Answer: A state of balance in which the rates of the forward and reverse reactions are equal.

Explanation:

chemical equilibrium is the state in which both the reactants and products are present in concentrations which have no further tendency to change with time.

What is the difference between A and B? In your answer, describe the state of matter in each picture AND the key property of gas being shown.

Answers

For A it seems that the molecules are freely moving around and vibrating as well- indicates liquid. At B, the molecules are rigid with very less energy - indicating solid.

A sample of gas in a flexible container starts at a temp of 30 degrees c l, 1.5atm and 2.0ml. If the temp decreases to 25 degrees c and the pressure increases to 2.0 atm, what will the new volume be?

Answers

To solve this problem, we can use the combined gas law, which states:

(P1 * V1) / (T1) = (P2 * V2) / (T2)

Where:
P1 and P2 are the initial and final pressures,
V1 and V2 are the initial and final volumes,
T1 and T2 are the initial and final temperatures.

Given:
P1 = 1.5 atm
V1 = 2.0 mL
T1 = 30 °C = 273.15 + 30 = 303.15 K
T2 = 25 °C = 273.15 + 25 = 298.15 K
P2 = 2.0 atm

Let's substitute these values into the combined gas law equation and solve for V2:

(1.5 * 2.0) / 303.15 = (2.0 * V2) / 298.15

3.0 / 303.15 = (2.0 * V2) / 298.15

0.0099 = (2.0 * V2) / 298.15

Cross-multiplying:

2.0 * V2 = 0.0099 * 298.15

2.0 * V2 = 2.948485

V2 = 2.948485 / 2.0

V2 = 1.4742425 mL

Therefore, the new volume will be approximately 1.47 mL when the temperature decreases to 25 degrees Celsius and the pressure increases to 2.0 atm.

Answer:

1.475ml

Explanation:

We add 273 to °C to convert it to kelvin

A sample of gas in a flexible container starts at a temp of 30 degrees c l, 1.5atm and 2.0ml. If the

3. Would you expect your experimental results would change if a different gas, such as CO2, were used instead of air? Explain your answer.

Answers

The experimental results would change if a different gas, such as CO₂, were used instead of air.

What is Air?

This comprises of gases that form the atmosphere and they include:

78.08% nitrogen20.95% oxygen0.93% argon0.04% carbon dioxide, and small amounts of other gases.

Due to the presence of other gases in air, there would be a change in experimental results.

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Which of the following is the Brønsted-Lowry definition of an acid?

Answers

Answer:

A Brønsted-Lowry acid is any species that can donate a proton (H +) to another molecule. A Brønsted-Lowry base is any species that can accept a proton from another molecule. In short, a Brønsted-Lowry acid is a proton donor (PD), while a Brønsted-Lowry base is a proton acceptor (PA).

5 compounds that has electrovalent and covalent bond

Answers

Answer:

electrovalent

NaCl

Lithium Carbonate

ammonium phosphate

aluminium floride

potassium hydride

covalent

methane

benzene

carbon iv oxide

hydro flouride

hydro chloride

In the reaction of magnesium nitrate (aq) and sodium hydroxide (aq), the spectator ions are:

Answers

Answer:Magnesium nitrate will react with sodium hydroxide to form magnesium hydroxide and sodium nitrate.

Explanation:

Below is a list of the first 10 residues of the B helix in myoglobin from different organisms.
Position 1 2 3 4 5 6 7 8 9 10
Human D I P G H G Q E V L
Chicken D I A G H G H E V L
Alligator K L P E H G H E V I
Turtle D L S A H G Q E V I
Tuna D Y T T M G G L V L
Carp D F E G T G G E V L
Based on this information, which positions (a) appear unable to tolerate substitutions, (b) can tolerate conservative substitution, and (c) are highly variable?

Answers

Answer:

i dont knoiwxplanation:

THIS NOT MY WORK. its for my sister. HELP HER

Answers

Answer:

Your answer will be b(molten material from the outer core makes its way to the surface of earth)

Explanation:

Answer:

Explanation:

I'm pretty sure molten material comes from the inner core. I think you can search up this though, try to find where molten material comes from. Goodluck!

KOH (aq) + HNO(little3) (aq) = KNO(little 3) (aq) + H20 (1)

Answers

The reaction already balanced

Further explanation

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:

• 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.

• 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product

• 3. Select the coefficient of the substance with the most complex chemical formula equal to 1

For gas combustion reaction which is a reaction of hydrocarbons with oxygen produces CO₂ and H₂O (water vapor). can use steps:

Balancing C, H and the last O

Reaction

KOH (aq) + HNO₃ (aq) ⇒ KNO₃ (aq) + H₂0 (l)

give coefficient

aKOH (aq) + bHNO₃ (aq) ⇒ KNO₃ (aq) + cH₂0 (l)

K : left = a, right = 1⇒a=1

N : left = b, right =1, b=1

H: left = a, right a+b=2c⇒1+1=2c⇒2=2c⇒c=1

KOH (aq) + HNO₃ (aq) ⇒ KNO₃ (aq) + H₂0 (l)⇒ already balanced

Can someone please help? And quickly if you can thank you!

Answers

The concept ideal gas equation is used here to determine the number of moles. The ideal gas law is the equation of state of a hypothetical ideal gas. Here the number of moles of gas is 0.17.

The equation which is formed by the combination of Boyle's law, Charles's law and Avogadro's law is called the ideal gas equation. An ideal gas is a theoretical gas composed of a set of randomly moving point particles which interact through elastic collisions.

The ideal gas equation is:

PV = nRT

n = PV / RT

10°C = 283 K

Number of moles is:

n = 1.2 × 3.4 / 0.0821 × 283 = 0.17

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When 7.524 is rounded to 3 sig figs it will be

Answers

When 7.524 is rounded to 3 significant figures, it will be 7.52.

The process of changing a number to a nearby number with fewer significant digits is known as rounding.

Rounding can be done to the nearest integer, the nearest tenth, the nearest hundredth, and so on.

Here are some pointers on rounding numbers to a certain number of significant digits:If the digit following the last significant digit is less than 5, simply drop it and all following digits.

(round down)For example, 2.832 rounded to two significant digits is 2.8 since the 3 is followed by a 2 which is less than 5.

If the digit following the last significant digit is greater than 5, add 1 to the last significant digit, then drop all of the digits that follow it.

(round up)For example, 4.673 rounded to two significant digits is 4.7 since the 3 is followed by a 7 which is greater than 5.

If the digit following the last significant digit is exactly 5, the preceding digit is odd, and no other digits follow, increase the last significant digit by 1.

If the digit following the last significant digit is exactly 5, the preceding digit is even, and no other digits follow, simply leave the last significant digit alone.

For example, 2.875 rounded to two significant digits is 2.9 since the 5 is followed by an odd number, which means that the 8 should be rounded up, while 2.765 rounded to two significant digits is 2.8 since the 5 is followed by an even number, which means that the 6 should be left alone.

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How many molecules are in 450.0 grams of aluminum fluoride(AIF3)?

Answers

Answer:

It would be exactly 5.3586262014272155. But if you were to round it up it would be 5.35.

Here is the answer:)

How many molecules are in 450.0 grams of aluminum fluoride(AIF3)?

Identify the term that matches each definition.
The front vent of a fume hood, which helps maintain proper air circulation____.
The horizontal, flat area of a fume hood upon which experiments are carried out____.
A characteristic that describes substances that evaporate readily, producing large amounts of vapors____.
The glass panel in front of the fume hood that shields the user from fumes and other hazard_____.
A. Airfoil.
B. Sash.
C. Work surface.
D. Volatile.

Answers

Answer:

Explanation:

The front vent of a fume hood that assists and maintain proper air circulation is Airfoil

The horizontal flat surface area of the fume hood where experiments are being carried out is Work Surface.

The main characteristics which demonstrate and describes how substances evaporate rapidly and readily into the thin air while producing a huge amount of vapor is known as Volatile

In front of the fume hood, lies the glass panel whose main purpose is to shield the user from the hazardous substance. This glass panel is known as the Sash.

PLS HELP ME! This is on a test btw! What is the momentum of a 150 kg linebacker traveling at 6 m/seconds.

Answers

Answer:

p = 900 kg·m/s

Explanation:

Calculate momentum given mass and velocity:

P = M*V

p = 150*6

Please I need help with this

Answers

Answer: put 45 mm

Explanation:

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Select the correct answer. Some medications or remedies bought "over the counter" can be dangerous and even life threatening. A. True B. False

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Select the correct answer.
Some medications or remedies bought "over the counter" can be dangerous and even life threatening.
A.
True
B.
False