explain why the hazard of the dilute hydrolic acid is lower than the hazard of concentrated ethanoic acid even though hydrolic acid is a strong acid and ethanoic is a weak acid

Bruce needs to mix 20 ml of the 10% alcohol solution with 30 ml of the 15% alcohol solution to make 50 ml of a 12% alcohol solution.

To determine the quantities of the 10% and 15% alcohol solutions that Bruce needs to mix, we can set up an equation based on the concentration and volume.

Let's assume that Bruce needs to mix x ml of the 10% alcohol solution and (50 - x) ml of the 15% alcohol solution.

The concentration of the 10% alcohol solution can be represented as 0.10x (since 10% is equivalent to 0.10) and the concentration of the 15% alcohol solution can be represented as 0.15(50 - x).

To achieve a 12% concentration in the final solution, the equation can be set up as follows:

0.10x + 0.15(50 - x) = 0.12(50)

Simplifying the equation, we get:

0.10x + 7.5 - 0.15x = 6

Combining like terms, we have:

-0.05x = -1.5

Dividing both sides by -0.05, we find:

x = 30

Therefore, Bruce needs to mix 20 ml of the 10% alcohol solution with 30 ml of the 15% alcohol solution to make 50 ml of a 12% alcohol solution.

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suppose mol of electrons must be transported from one side of an electrochemical cell to another in minutes. the size of electric current that must flow is   104.54 A.

Suppose 650 mmol of electrons must be transported from one side of an electro chemical cell to another in 10.0 minutes Then, we have to calculate the size of electric current that must flow. Then we know that Current I = Charge(q) / time(t), Charge = mols of e-x charge of electron = (0.650 mol of e-) x (96500 C/mol of e-) = 62725 C. now, time in seconds t = 10 min = 10 min x 60 s/ min = 600 s therefore, I = C/t = (62725)/600

| = 104.54 C/s, Also, 1 C/s = 1 Amp. Hence, I = 104.54 A. A torrent of particles, such as ions or electrons travelling through an electrically conducting or a vacuum is called as an electric current. The net rate of electric charge passing throughout a surface or through a control volume is how it is determined. Electric current is a term that refers to how so much electricity to flow across a circuit and how it flows in an electronic circuit. Amperes are employed to measure it (A). More and more electricity going through the circuit, the greater the ampere value.

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The flaw in Regina’s plan is that the time frame is unrealistic (option B).

Goal setting involves the development of an action plan designed in order to motivate and guide a person or group toward a goal, which is a result that one is attempting to achieve.

Effective goal setting lets you measure progress, overcome procrastination and visualize your dreams. However, setting goals is said to be effective when it is done in an adequate time frame.

According to this question, Regina identifies her goal and hastily writes it down as follows: I will make an A on my English literature term paper that is due next week.

This goal, although is great, is unlikely to be met because of the time frame. One cannot get an excellent result in something that lacks adequate preparation, which includes adequate time.

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Answer: If one mole of carbon monoxide has a mass of 28.01 g and one mole of carbon dioxide has a mass of 44.01 g , it follows that the reaction produces 44.01 g of carbon dioxide for every 28.01 g of carbon monoxide.

Explanation: (May Be Unrelated?)

Answer:

I am pretty sure the correct answer is a reproductive system

1) First, let's calculate the molar mass of NaCl and CoCl₂:

Atomic mass of:

Na - 22.99 g/mol

Cl - 35.45 g/mol

Co - 58.93 g/mol

So for NaCl:

22.99 + 35.45 = 58.44 g/mol

Molar mass of NaCl = 58.44 g/mol

For CoCl₂:

58.93 + (2x35.45) = 129.83 g/mol

Molar mass of CoCl₂: 129.83 g/mol

2) Now let's find out the number of moles of each sample. For this, we use the following equation:

moles = mass / molar mass

NaCl:

mole = 116.8 / 58.44

mole = 1.999 moles of NaCl

CoCl₂:

mole = 259.7 / 129.83

mole = 2.000 moles of CoCl₂

3) To find the amount of particles, we use the Avogadro's constant. Avogadro's constant is a constant of proportion between the amount of matter and the number of entities that are linked to that amount. These entities can be atoms, molecules, ions, electrons, protons, neutrons.

In this case, we have the same number of moles, so we will have the same number of particles for both NaCl and CoCl₂.

Answer:

The destiny of silicon,which is 2.33 g/cm3

Explanation:

On the graph,

To know what each letters represents, we must understand what an energy profile diagram is.

An energy profile diagram is a representation of chemical reaction, showing the pathways in which reactants follows to become products.

With the above information, we can say that:

Every reaction has a peak energy. This peak energy is referred to as the activation complex. The activation complex is the highest energy of the reaction. Looking at the diagram, we can see that B is at the peak.

Thus, letter B represents the activation complex

Also, every reaction has activation energy. This is the minimum energy required for a reaction to occur. In profile diagram the activation energy is the energy between the peak (i.e activation complex) and the reactant. from the graph, we can see that letter D lies between the letter B and A.

Thus, we can say letter D is the activation energy

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Answer: Ductile

Explanation:

Answer:

640 grams

Explanation:

look up Solubility table in wikipedia for potassium nitrate (KNO3)

32 grams of potassium nitrate (KNO3) water solubility at 20 degrees celsius (room temperature) can be dissolved in 100 milliliters (0.1 L) of water.

2 liters = 2000 milliliters

32 grams / 100 milliliters = x grams / 2000 milliliters

cross-multiply

100 * x = 32 * 2000

x = (32 * 2000) / 100

x ≈ 640 grams

chatgpt

The concentration of ethanol in mass percent is 35.08%. We are given the volume percent of ethanol in a particular liquor which is 44.5%.

The density of ethanol is 0.789 g/mL while the density of water is 0.998 g/m L .

To find the mass percent, we must first convert the volume percent to mass percent.

The formula for volume percent is: Volume percent

=Volume of solute / Volume of solution × 100% .

We can use this formula to find the mass percent of ethanol in the liquor. However, before we do that, we need to determine the volume of ethanol in the liquor using the density of ethanol.

The formula for density is: density

= mass / volume Rearranging the formula to solve for volume gives : volume

= mass / density

We can now use the volume of ethanol and the volume of the liquor to find the mass percent of ethanol in the liquor.

The formula for mass percent is:

Mass percent

= Mass of solute / Mass of solution × 100% Since density

=mass/volume,

mass= density × volume

Substituting the values of density and volume, we have:

mass of ethanol

= 0.789 × (44.5/100)

= 0.351405 g / m L.

mass of water

= 0.998 × ( 55.5/100)

= 0.55389 g/m L .

The total mass of the liquor is the sum of the masses of ethanol and water. Therefore, we have:

mass of solution

=mass of ethanol + mass of water

=0.351405 + 0.55389

= 0.905295 g / m L.

Finally, substituting the values of the masses in the formula for mass percent gives: mass percent

=0.351405 / 0.905295 × 100%

=35.08% .

Therefore, the concentration of ethanol in mass percent is 35.08%.

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Answer:

cool boy

Explanation:

The spectroscopy has been an analytical technique used for the qualitative and quantitative determination of the sample.

\(A=\epsilon \;cl\)

Where A= absorbance

The molar absorptivity, \(\epsilon\)

The concentration of the sample, c

The path length of the sample, l

The absorbance of the sample has been given as:

A=cl

Where, the absorbance of sample, A=1AU

The path length of the sample, l=.46 cm

The concentration of sample has been given by substituting the values as:

\(1=1.46\;\times\;c\\c=\dfrac{1}{1.46} \text{M}\\c=0.68\;\text M\)

The concentration of the sample with molar absorptivity 1 has been 0.68 M.

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Answer:

C, a volcano erupting

Explanation:

because volcanos release alot of smoke and ash into the air, plus they are naturally occurring.

Its tail helps it climb down the tall grasses and lets it swing from the grass like a monkey in a tree

Explanation:

Answer:

Into the adaptive Trait!

Explanation:

Answer:

Just in case you want confirmation yes, its mid ocean ridge

The triple point can be seen from the graph that has been attached here.

The triple point is a special combination of temperature and pressure where the equilibrium of a substance's three phases—solid, liquid, and gas—occurs. The transition between phases happens with no discernible net change in the substance because the solid, liquid, and gas phases are in perfect equilibrium at the triple point.

A crucial reference point in thermodynamics, the triple point is frequently used to specify temperature scales and calibrate thermometers. Each substance has a specified value for temperature and pressure.

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Heat required : 4.8 kJ

The heat to change the phase can be formulated :

Q = mLf (melting/freezing)

Q = mLv (vaporization/condensation)

Lf=latent heat of fusion

Lv=latent heat of vaporization

The heat needed to raise the temperature

Q = m . c . Δt

1. heat to raise temperature from -20 °C to 0 °C

\(\tt Q=10\times 2.09\times (0-(-20)=418~J\)

2. phase change(ice to water)

\(\tt Q=10\times 333=3330~J\)

3. heat to raise temperature from 0 °C to 25 °C

\(\tt Q=10\times 4.18\times (25-0)=1045~J\)

\(\tt Q~tot=418+3330+1045=4793~J\rightarrow rounding~and~2~sig~figs=4.8~kJ\)

180° angle between the two chlorine atoms in the diequatorial conformation of trans-1,2-dichlorocyclohexane.

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Nitrogen has seven protons, whereas beryllium has four. Therefore, the effective nuclear charge of beryllium is somewhat larger than that of 2.

The chemical element with the atomic number 7 and the letter N is known as nitrogen. The lightest element in group 15 of the periodic table, often known as the pnictogens, nitrogen is a nonmetal. It is a typical element in the cosmos, believed to be eighth in the Milky Way and the Solar System in terms of overall abundance.

Nitrogen is a typical diatomic non-metal gas that is typically colourless, odourless, and tasteless. It is trivalent in the majority of compounds because its outer shell contains five electrons.

An vital macronutrient for plants, nitrogen is also a crucial component of amino acids, which serve as the building blocks for enzymes and proteins in plants.

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water is a pure substance

Determine quantitative density of a liquid whose mass is 62 g and whose volume is 31 mL. A block or wood with the dimensions 3 cm x 2 cm x 5 cm and a heft of 22.5 g (2 g/mL)

How do you calculate a block of wood's volume?

Result for an image A timber block weighs 22.5 grammes and has dimensions of 3 cm x 2 cm x 5 cm. What is that?

It is simple to determine the volume of such a block, prism, a cylinder by multiplying the base's area by the object's height or altitude.

How is block mass determined?

Multiply the volume and density together.

You may get the mass of your object by multiplying your two numbers together. You'll notice that you end up having units of mass if you keep track of both the units as you go along (kilograms or grams). A diamond, for instance, has a volume of 5,000 cm3 and a density of 3.52 g/cm3.

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Determine quantitative density of a liquid whose mass is 62 g and whose volume is 31 mL. A block or wood with the dimensions 3 cm x 2 cm x 5 cm and a heft of 22.5 g (2 g/mL)

Result for an image A timber block weighs 22.5 grammes and has dimensions of 3 cm x 2 cm x 5 cm. What is that?

It is simple to determine the volume of such a block, prism, a cylinder by multiplying the base's area by the object's height or altitude.

Multiply the volume and density together.

You may get the mass of your object by multiplying your two numbers together. You'll notice that you end up having units of mass if you keep track of both the units as you go along (kilograms or grams). A diamond, for instance, has a volume of 5,000 cm3 and a density of 3.52 g/cm3.

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Answer:

that's true without any doubt

If we triple the temperature and double the volume, The new pressure of the system be 10atm.

The equation of state for a fictitious ideal gas is known as the ideal gas law. Although it has several drawbacks, it is a decent approximation of the behaviour of numerous gases under various circumstances. The formula for the ideal gas equation is

To find pressure we us ideal gas equation:

PV = nRT

Therefore, if we multiply Volume by 2 and Temperature by 3, we get.

hence, by adding.

Given that nR are constant throughout, P (2V)=nR(3T).

then would only consider variables

P = 3T/2V

So p = 1.5 T/V

It can alternatively be expressed as P/1.5=T/V.

Pressure would therefore drop by a factor of 1.5 division.

The new pressure of the system is 10atm.

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Answer:

42 neutrons

Explanation:

Mass number = number of protons + number of neutrons

number of neutrons = Mass number - number of protons

= 75 - 33

= 42

Answer:

42 neutrons

Explanation:

The age of the meteorite is 2.77 × 10⁹ years. The result is obtained by using the exponential decay equation.

The exponential decay equation can be used to calculate radioactive decay for the activity, the nuclei, and also the mass. The exponential decay equation for the mass is

\(m = m_{o} e^{- \lambda t}\)

Where

We had a sample of lunar meteorite contained 100% K-40 at start. Now, the sample contains 78% Ar-40 and 22% K-40. The half life is 1.27 × 10⁹ years.

To find the age of the meteorite, we can use the exponential decay equation.

First, let's calculate the decay constant.

λ = 0.693 / T½

λ = 0.693 / 1.27 × 10⁹

λ = 0.54567 × 10⁻⁹

If the remaining K-40 is 22%, the decay time is

\(m = m_{o} e^{- \lambda t}\)

\(\frac{m}{m_{o}} = e^{- \lambda t}\)

\(\frac{22}{100} = e^{-0.54567 \times 10^{-9} t}\)

\(ln \: 0.22 = ln \: (e^{0.54567 \times 10^{-9} t})\)

- 1.514 = - 0.54567 × 10⁻⁹ t

t = 2.77 × 10⁹ years

Hence, the age of the lunar meteorite containing Ar-40 and K-40 is 2.77 × 10⁹ years.

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Answer: A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption

Explanation:

Answer:

5.4 × 10 3

Explanation:

Answer:

5.4 × 10^3.

Explanation:

Not 5.49 × 10^3, 5.4 × 10^7, or 5.5 × 10^3.

Answer: B

Explanation:

Answer:

incorrect

Explanation:

The statement "A solution that contains 50 g of [unknown substance] in 100 mL of water at 80 degrees C is" is incomplete and does not provide enough information to answer the question. We need to know what substance is dissolved in the water in order to determine the properties of the solution, such as its concentration and behavior at a certain temperature. Please provide more information or context to the question so that I can assist you better.