A medical laboratory catalog describes the pressure in a cylinder of a gas as 15.32 MPa. What is the pressure of this gas in atmospheres and torr

Answer:

59.46 g

Explanation:

To answer this question, the molecular weight of ammonium sulfate must be computed.  To accomplish this, the weights of the individual elements must be noted.
N=14.01\(\frac{g}{mol}\)

H=1.01\(\frac{g}{mol}\)

S=32.07\(\frac{g}{mol}\)

O=16.00\(\frac{g}{mol}\)

To compute the molecular weight:

\(2[14.01\frac{g}{mol}+4(1.01\frac{g}{mol})]+32.07\frac{g}{mol}+4(16.00\frac{g}{mol})=132.14\frac{g}{mol}\)

To calculate the mass:

\(0.45 mol(\frac{132.14g}{1mol})=59.463g\)

Answer:

Air pollution effect the most

ANSWER :

Extra Information :

❥ Air pollution can damage crops and trees in a variety of ways.

❥ Ground-level ozone can lead to reductions in agricultural crop and commercial forest yields, reduced growth and survivability of tree seedlings, and increased plant susceptibility to disease, pests and other environmental stresses (such as harsh weather).

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Answer:so that they may not get confused in which container did they place which chemical since some chemicals are simmilar in colour

Explanation:

The scientists labeled all containers so that they will sure about which container did they put which chemical in since some of the chemicals are similar in color or some are colorless.

Labeling in a lab is extremely important for many reasons. The laboratory is a fast-paced and efficient work zones due to proper workflow and organization.

Labeling helps to make sure that scientists are working with the correct samples or materials. Without labels, they run the danger of using the wrong chemicals or materials in experiments. This can cause experiments to fail and wastes time, resources, and funds or more than that.

Therefore, it is important for materials to work with by using labeling, as it ensures they are stored in the proper containers. The scientists label the containers to avoid confusion about the material being mixed with other materials.

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After equilibrium is established, then type of ion in solution in largest concentration, other than the k ion, is : (b) HPO₄²⁻.

In chemistry, equilibrium is a state of balance or stability achieved in chemical reaction when the rates of forward reaction and reverse reaction are equal.

The balanced chemical equation for the reaction between H₃PO₄ and KOH is:

H₃PO₄ + 3KOH → K₃PO₄ + 3H₂O

In this reaction, one mole of H₃PO₄ reacts with three moles of KOH to produce one mole of K₃PO₄ and three moles of water.

When equal volumes of 0.10 M H₃PO₄ and 0.20 M KOH are mixed, the concentration of OH⁻ ions will be in excess because KOH is strong base and H₃PO₄ is a weak acid. The OH⁻ ions will react with H⁺ ions of H₃PO₄ to form water, according to following reactions:

H₃PO₄ + OH⁻ → H₂PO₄⁻ + H₂O

H₂PO₄⁻ + OH⁻ →  HPO₄²⁻ +H₂O

The net effect of these reactions is that H₃PO₄ reacts with OH⁻ to produce HPO₄²⁻. Therefore, the type of ion in solution in largest concentration, other than the K+ ion, is  HPO₄²⁻.

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Answer:

1.4 mol

Explanation:

that my i got i was doing for it

Answer:

There are 3 significant figures on this one.

The amount of heat a 30-gram sample of substance Y absorbs to melt at its melting point is 105 J.

The enthalpy of fusion of a substance additionally referred to as heat of fusion is the alternate in its enthalpy resulting from imparting electricity, usually heat, to a specific amount of the substance to change its state from a stable to a liquid, at a steady strain.

The heat of fusion is the amount of heat vital to alternate 1 g of a stable to a liquid without a temperature exchange.

The heat of fusion is the strength wished for one gram of a solid to melt without any change in temperature. The heat of vaporization is the energy needed for one gram of a liquid to vaporize (boil) without a trade-in strain.

q = m·ΔHf

   = 30 × 3.5

heat  = 105 J

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If you fill 12 trays with water and find the total water mass to be 500 g, the quickest way to figure out the mass of water in one of the trays would be to divide the total mass of water by 12.

Since the total mass of water in the 12 trays = 500 g

Mass of water in a single tray would be = 500/12

                                                               = 41.67 rounded to 2 decimal places.

This represents the quickest way because direct weighing will require a few steps and, thus, takes more time.

For direct weighing:

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Answer:

5 x 10^3 = 5 x 1000 = 5000

Hope this helps.

Good Luck

Answer:

Explanation:

We have 10 is raised to a power of 3, since 3 is positive you are to add three zeros to the right of 5.

The volume and temperature changes in according to Charles' law will be:

The relationship between the volume and temperature of a given mass of gas is given by Charles' Iaw which states that volume is directly proportional to temperature if a gas in Kelvin.

To complete the tables volume and temperature changes:

Therefore, volume and temperature are directly proportional.

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The empirical formula for the compound is \(PCl_{3}\)

The empirical formula of a compound is the formula in which the atoms of all the elements are present in their simplest whole-number ratio. It's possible that a compound's empirical formula and molecular formula are different.

Given Information:

P = 10.15 mg

Cl = 34.85 mg

Convert mg to moles

                                 31 mg of P ----------------- 1 mmol

                                 10.15 mg  ------------------   x

                                 x = 0.327 mmol of P

                                  35.5 mg of Cl ------------  1 mmol

                                   34.85 mg -----------------  x

                                 x = 0.982 mmol of Cl

Divide by the lowest number of mmoles:

For P = \(\frac{0.327}{0.327}\) = 1

For Cl = \(\frac{0.982}{0.327}\) = 3

So the empirical formula for the compound will be \(PCl_{3}\)

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Answer: C, negative

Explanation: Electrons give a negative charge, so having more electrons then postiivley charged protons would result in a negative charge.

Balanced nuclear equation by giving the mass number, atomic number, and element symbol for the missing species is ¹⁰B + ⁴He → ¹⁴N + 1¹H

The missing species in the given nuclear equation is ¹⁴N and 1¹H.

Let's write the mass number, atomic number, and element symbol for the missing species:

Mass number of ¹⁴N = 14

Atomic number of ¹⁴N = 7

Element symbol of ¹⁴N = N (since the atomic number of nitrogen is 7)

Mass number of 1¹H = 1Atomic number of 1¹H = 1

Element symbol of 1¹H = H (since the atomic number of hydrogen is 1)Therefore, the main answer of the balanced nuclear equation is: ¹⁰B + ⁴He → ¹⁴N + 1¹H.

In order to balance a nuclear equation, it is essential that the total mass number and the total atomic number is conserved.

Balancing nuclear equations requires both the knowledge of atomic structure as well as knowledge of the laws of conservation of mass and charge.

A balanced nuclear equation is essential in understanding nuclear reactions and in predicting the outcomes of nuclear reactions.The balanced nuclear equation for the given nuclear equation is:¹⁰B + ⁴He → ¹⁴N + 1¹H. Conclusion:Thus, the missing species in the given nuclear equation is ¹⁴N and 1¹H.

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Answer: The name of the salt produced is Calcium Sulphate.

Explanation:

we know, whenever an acid reacts with a base, we get a salt and water.

In the given question, Calcium Hydroxide is a base and Sulfuric acid is an acid.

When Calcium Hydroxide reacts with Sulfuric Acid, we get Calcium Sulphate and Water.

The required balanced chemical reaction is:-

Ca(OH)2 + H2SO4 = CaSO4 + 2H2O

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Answer:

yes

Explanation:

Revolution is the movement of an object around another object. So, Earth revolves around the Sun, and the Moon revolves around Earth. At the same time, Earth and the Moon are also rotating. Earth's rate of revolution is about 365 days (one year), and its rate of rotation is about 24 hours (one day).

A beam of light has a wavelength of 280 nanometers. The frequency of the light is  1.07 × 10¹⁵ Hz.

the information in the question is given as :

wavelength of beam of light = 280 nm

the relation between the frequency and the wavelength is given as :

F = c / λ

where,

F = frequency of the light

c = speed of light

λ = wavelength of light

speed of light , c is = 3 × 10⁸ m/s

substituting all the value in the formula for the frequency, we get:

F = c / λ

F =  3 × 10⁸  / 280 × 10⁻⁹

F = 0.0107 × 10¹⁷ Hz

F = 1.07 × 10¹⁵ Hz

Thus, A beam of light has a wavelength of 280 nanometers. The frequency of the light is  1.07 × 10¹⁵ Hz.

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Answer:

yes, I am pretty sure it can

1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr. the correct answer is D.

There are 24 electrons in all, according to the electron arrangement. A neutral atom will contain 24 protons if it has 24 electrons. The element is determined by its proton count. Chromium, symbol Cr, is the 24th element.

Since Cr contains 24 protons and the +2 charge would result in the nucleus having 26 protons, Cr²⁺ is invalid.  Cu is made up of 29 protons. The copper would be Cu⁵⁺ as there are only 24 electrons. Cu²⁺ was rejected for the same reason.

Therefore, 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr.

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Answer:

by Judith Curry On what we can learn from Goldilocks and The Three Bears ... In planetary science, the 'Goldilocks zone' is terminology for the the band ... We all know the fairy tale story of “Goldilocks and the three bears”, where GL ... as the discovery that the Earth was not the center of the solar system.

Explanation:

Answer:

empirical formula is the simplest formula of a compound with 4.433g phosphorus and 5.717g ooxygen.

When pouring from a stock solution bottle, it is generally recommended to hold onto the bottle by grasping the body of the bottle itself. Here's a detailed explanation: Stability, Spillage Prevention, Accurate Pourin

Stability: Holding the bottle by its body provides better stability and control over the pouring process. The body of the bottle is usually designed to provide a firm grip, allowing you to have better control over the pouring angle and flow rate.

Spillage Prevention: Holding the bottle by its body helps minimize the risk of spilling or tipping the bottle. The body of the bottle is typically wider and more stable compared to the neck or cap. By holding onto the body, you can maintain a better balance and reduce the likelihood of accidental spills.

Accurate Pouring: Holding the bottle by the body allows you to have a clearer view of the pouring spout or opening. This visibility helps ensure that you can accurately aim and control the pouring of the stock solution without splashing or wasting the liquid.

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6C(s) + 6H2(g) + 3O2(g) ⇄ C6H12O6(s) is  a balanced chemical equation for the standard formation reaction of solid glucose.

"Balancing by inspection," also referred to as trial and error, is the most basic and widely applicable technique for balancing chemical equations. There are a few techniques that can be applied to cut down on the number of trials and errors necessary to arrive at an equation that is ultimately correctly balanced. The law of conservation of matter must be followed for a chemical equation to be considered balanced. Chemical equations use two different kinds of numbers. In the chemical formulas of the reactants and products, there are subscripts. Additionally, coefficients are used to show how many molecules of a substance are consumed or produced before chemical formulas.

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Answer:

should be half wich is 750

Explanation:

There are six common types of radioactive decay: alpha emission, beta emission, gamma emission, positron emission, electron capture, and spontaneous fission.

Each type of decay is usually caused by specific conditions. Alpha emission occurs when the nucleus has a high atomic number (Z> 83) and too many protons for stability. Beta emission happens when the ratio of neutrons to protons (N/Z) is too small or too large. Gamma emission occurs when the nucleus is in an excited state or ground state. Positron emission is usually caused by N/Z being too small or too large, and positron capture occurs when N/Z is too small or large. Electron capture occurs when N/Z is too small or too large. Finally, spontaneous fission occurs when the nucleus has a mass number greater than 89. These different types of decay are important to understand in order to fully grasp the complex process of radioactivity and its effects.

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Answer:

it's sodium chloride I believe

Explanation:

Answer:

kJ/mol

Mass of nitrogen (m): 10/5.60 = 1.78 mol

I hope it helps you

The reported value of adding 4.56 g to 0.01860 g to the correct significant figures will be 4.58 g.

According to one of the rules guiding addition operation in significant figures., the number with the lowest significant figure to the right of the decimal place determines the number of significant figures in the final answer.

Thus, in operation: 4.56 + 0.01860, the number with the lowest significant figures to the right of the decimal place is 4.56 with 2 significant figures after the decimal place.

In other words, the final answer of the operation will also have two significant figures after the decimal.

Hence;

                     4.56 + 0.01860 = 4.58 g

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Denise ought to keep detailed record of the experiment to allow someone to do the same investigation and check the accuracy of results. Option D

The term experiment has to do with cause and effect relationships. We know that the cause is what leads to the effect if the process can be tested in a laboratory. The experiment that as performed by Denise was targeted at finding what time of the day is warmest.

From the results of the experiment, we can conclude that Denise ought to keep detailed record of the experiment to allow someone to do the same investigation and check the accuracy of results.

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In pinnately compound leaves, the leaflets arise from either side of the rachis. The rachis is the main axis or stalk of the leaf, to which the leaflets are attached. It serves as the central support structure for the leaflets in a pinnately compound leaf.

To better understand this, imagine the rachis as the stem of the leaf. The leaflets, which are smaller leaf-like structures, are attached to the rachis in a feather-like pattern. The leaflets can be arranged in pairs, with each pair emerging from opposite sides of the rachis.

For example, in a pinnately compound leaf like the fronds of a fern or the leaves of a rose bush, the leaflets arise from the sides of the rachis. This arrangement allows the leaf to efficiently capture sunlight and perform photosynthesis.

In summary, in pinnately compound leaves, the leaflets arise from either side of the rachis, which serves as the central axis of the leaf.

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