Pureguardian 120-hour 2-gallon ultrasonic warm and cool mist humidifier with aroma tray.

Answer: The atomic mass of elements is measured with the help of unified atomic mass units. One unified atomic mass unit can be quantified as the weight of one-twelfth of the mass of a carbon-12 atom considering that it is at rest.

Answer:

Explanation:

Here, we want to get the new volume of the gas

What we need to know is the law that connects volume and pressure at constant temperature

The law that supports this is the Boyle's law

It states that the volume of a given mass of gas is inversely proportional to its pressure at constant temperature

Mathematically, we can have this as represented as:

We can proceed mathematically to solve as follows;

Answer:

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Answer:

40.0L is the volume the CO occupy

Explanation:

To solve this question we must assume the gas is at STP. To find the volume of a gas using the moles, temperature and pressure of the gas we have to use:

PV = nRT

V = nRT / P

Where V is volume in liters

n are moles of the gas -Molar mass CO: 28g/mol-

50.0g * (1mol / 28g) = 1.786 moles CO

R is gas constant = 0.082atmL/molK

T is absolute temperature = 273.15K at STP

P is pressure = 1atm at STP

Replacing:

V = 1.786moles*0.082atmL/molK*273.15K / 1atm

V = 40.0L is the volume the CO occupy

The equilibrium constant, Keq for the reaction given that [N₂] = 0.5 mol/L, [O₂] = 0.3 mol/L, and [NO] = 0.10 mol/L is 0.067

Equilibrium constant, Keq for a given reaction is by the following formula:

nReactant ⇌ mProduct

Equilibrium constant (Keq) = [Product]ᵐ / [Reactant]ⁿ

Now, we can shall determine the equilibrium constant, Keq for the reaction. This is illustrated below:

N₂(g) + O₂(g) ⇌ 2NO(g)

Equilibrium constant (Keq) = [NO]² / [N₂][H₂]

Equilibrium constant (Keq) = 0.1² / (0.5 × 0.3)

Equilibrium constant (Keq) = 0.01 / 0.15

Equilibrium constant (Keq) = 0.067

Thus, we can conclude that the equilibrium constant, Keq is 0.067

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Step 1 - Brief revision of Boyle's Law

Boyle's law is a law concerning the behavior of gases. It states that the pressure and the volume are inversely proportional given that the temperature is kept constant.

That is, if we increase the pressure, the volume will decrease. This principle is behind the proper functioning of our lungs, for example. This can also be described mathematically as:

Step 2 - Choosing the right alternative

As we have seen in step 1, we can use the following formula to work with Boyle's Law:

Therefore, the correct alternative is item d.

The amount of carbon flux in the atmosphere will be 3.3 GtC/yr

The carbon flux in the atmosphere can be calculated by:

1. Removing the amount of carbon that leaves the atmosphere from the amount that enters the atmosphere.

2. Adding the amount of carbon released by fossil fuel burning.

Thus,

Carbon flux = 211.6 - 213.8 + 5.5 = 3.3 GtC/yr

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Answer:

In beta radiation, the molecule that breaks down to create an electron could be a neutron or a proton

In beta radiation, the molecule that breaks down to create an electron could be a neutron or a proton. Beta radiation  happens when a core experiences a change, coming about within the emanation of either a beta-minus molecule (electron) or a beta-plus molecule (positron).

In beta  radiation a neutron inside the core changes over into a proton, emanating an electron and an antineutrino. The neutron is composed of quarks, particularly two down quarks and one up quark. Amid the rot, one of the down quarks inside the neutron changes into an up quark, changing the neutron into a proton. The overabundance vitality is carried absent by the transmitted electron (beta molecule) and the antineutrino.

The method can be spoken to by the taking after condition for beta-minus rot:

n → p + e- + ν-bar (antineutrino)

The abundance vitality is carried absent by the transmitted positron (beta molecule) and the neutrino.

The condition for beta-plus rot is as takes after:

p → n + e+ + ν (neutrino)

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Answer:

ldk

Explanation:

ldk

Answer:

No, it's not possible to change the atoms into a different element.

Explanation:

No, because rule four of his theory says that change cannot occur

Answer: 0.83 m/s

Linear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration

Formation of ammonium acetate and water occurs when aqueous solutions of ammonia and vinegar are mixed, the

Ammonia, which has the chemical formula NH₃, is a weak base, while vinegar, which is a solution of acetic acid (CH₃COOH) in water, is an acid. When the two solutions are mixed, a neutralization reaction occurs, in which the ammonium ion (NH⁴⁺) from ammonia combines with the acetate ion (C₂H₃O²⁻) from vinegar to form ammonium acetate (NH₄C₂H₃O₂) and water (H₂O).

The balanced chemical equation for the reaction is,

NH₃(aq) + CH₃COOH(aq) → NH₄C₂H₃O₂(aq) + H₂O(l)

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Answer:

Mass of Chromium produced = 37.91 grams

Explanation:

2K + CrBr₂  →  2KBr + Cr

2mole     1 mole                1 mole

mass of Potassium = 57.0 grams

molar mass of Potassium = 39.1 g/mol

no of moles of Potassium = 57.0 / 39.1 = 1.458 moles

mass of CrBr₂= 199 grams

molar mass of CrBr₂ = 211.8 gram/mole

no of moles of CrBr₂ = 199 / 211.8 = 0.939 mole

From chemical equation

1 mole of CrBr₂ = 2 moles of K

∴ 0.939 moles of CrBr₂ = ?

   ⇒ 0.939 x 2/1 = 1.878 moles of K

1.878 moles of K is needed, but there is 1.458 moles of K. So, Potassium is completed first during the reaction . Hence, Potassium is limiting reagent. and CrBr₂ is excess reagent .

From chemical equation

2 moles of K = 1 mole of Cr

∴ 1.458 moles of K = ?

   ⇒ 1.458 x 1/ 2 = 0.729 moles of Cr

no of moles of Cr formed = 0.729 moles

molar mass of Cr = 52.0 g/mol

mass of one mole of Cr = 52.0 grams

mass of 0.729 moles of Cr = 52.0 x 0.729 = 37.908 grams

mass of Chromium produced = 37.91 grams

Crystallization of sugar in a syrup can be avoided by adding inverted sugar. Invert sugar is a mixture of glucose and fructose, produced from sucrose. It is produced by hydrolysis of sucrose by heating with water and an acid such as lemon juice, vinegar or cream of tartar.

By adding invert sugar to a syrup, it reduces the amount of sucrose present in the solution and promotes the formation of glucose and fructose. This causes the solution to become more saturated and the syrup less likely to crystallize. Invert sugar is often used in the production of confectionery, ice cream, and other sweets.Inverted sugar can also be used to improve the texture and quality of baked goods. It is often used in cake recipes to enhance the flavor and increase the shelf life. It can also be used as a substitute for honey or corn syrup in recipes that require a liquid sweetener.In conclusion, the addition of invert sugar helps to prevent crystallization of sugar in syrup. Invert sugar is a mixture of glucose and fructose produced from sucrose by hydrolysis.

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It is because the high temperature superconductor was more affordable، easy to use and more efficient than before.

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Answered by Benjemin

Yes, hexane and diethyl ether, a solvent pair, will definitely function as a team during crystallization.

This is due to the fact that crystal formation requires a miscible solvent pair. Normally, two solvents—one in which the compound is soluble and one in which it is not—are required for crystallization. Additionally, these two solvents ought to mix easily.

Hexane and diethyl ether, the given solvent pair, are miscible with one another. Therefore, we can crystallize using the solvent pair mentioned above.

What is crystallization?

Crystallization is the process of increasing the concentration of a solution to a supersaturated state in order to form solid particles in a homogeneous phase. Crystallization is the process by which crystals are formed from either melted material or a solution.

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Answer:  reverse osmosis.

Explanation:

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7.33 psi is the pressure at which the balloon bursts.

With a pressure of 748 mmHg and a temperature of 28.0 °C, a weather balloon is inflated to a volume of 28.5 L. The balloon ascends through the atmosphere to a height of around 25,000 feet, where the temperature is -15.0 °C and there is a pressure of 385 mmHg. Release of the balloon into the atmosphere. The pressure on the balloon is 35.0 kPa at the height above the ground.

P1 vs. V1 = P2 vs. V2 vs. T2 (T2)

Where:

P1 = 1.00 atm

V1 = 71.6 L

T1 = 293.15 K (20.0 °C in Kelvin)

T2 = 238.15 K (-35.0 °C in Kelvin)

V2 = 250.0 L

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

P2 = (1.00 atm * 71.6 L * 238.15 K) / (250.0 L * 293.15 K)

P2 = 0.499 atm

1 atm = 14.696 psi

0.499 atm = (0.499 atm) * (14.696 psi / 1 atm) = 7.33 psi

Hence, 7.33 psi is the pressure at which the balloon bursts.

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62.1 g Al

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

2.30 mol Al

Step 2: Identify Conversions

[PT] Molar Mass of Al - 26.98 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

62.054 g Al ≈ 62.1 g Al

Increasing one charged particle by 16 will lead to increasing the electrical force between two charged particles by a factor of 16.

This is referred the attractive or repulsive interaction between any two charged bodies present.

F= kq1q2/r²

F1/F2= kq1q2/r² / 16kq1q2/r²

F1/F2 = 1/16

F2 = 16F1

This is therefore how to increase the electrical force between two charged particles by a factor of 16.

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Answer:Helium

Explanation:

Helium can hold two electrons on the outer shell. as for the inner part it mostly looks like helium.

Answer:

2117.02 litres

Explanation:

Using the ideal gas equation as follows;

PV = nRT

Where:

P = pressure of the gas (atm)

V = volume of the gas (L)

n = number of moles (mol)

R = gas law constant (Latm/molK)

T = temperature (K)

According to the information given in this question,

P = 0.12 atm

V = ?

n = 9.7moles

T = 46°C = 46 + 273 = 319K

R = 0.0821 Latm/molK

Using PV = nRT

0.12 × V = 9.7 × 0.0821 × 319

0.12V = 254.04

V = 254.04 ÷ 0.12

V = 2117.02 litres

Answer:

~120 grams water

Explanation:

% LiCl = (Mass LiCl) / (Mass of Soln) x 100%

= Mass LiCl / (Mass H₂O + Mass LiCl) x 100% = 6.7% (divide both sides by 100%)

=> Mass LiCl / Mass H₂O + Mass LiCl = 0.067

=> Mass LiCl = 0.067(Mass H₂O) + 0.067(Mass LiCl)

Solve for Mass H₂O:

=> Mass LiCl - 0.067(Mass LiCl) = 0.067(Mass H₂O)

=> Mass H₂O = (Mass LiCl - 0.067(Mass LiCl) / 0.067

= 8.6g - 0.067(8.6g) / 0.067 = 8.0238g / 0.067 = 119.76g H₂O = ~120grams

The systematic, or IUPAC, name for the compound in which a six-carbon ring is bonded to a four-carbon ring is cyclohexylbutylcyclobutane.

To name the compound given the chemical structure -Naming an organic compound follows a set of rules. These rules are widely known as nomenclature, which gives a unique name to a compound.

In this compound, there is a six-carbon ring, which is cyclohexyl and a four-carbon ring, which is cyclobutane. Both are linked by a butyl group. We can apply the following rules to name this compound:Identify the parent chain: In this case, it is the ring with the maximum number of carbons, which is cyclohexyl. Remove the suffix -ane from the parent chain: Cyclohexyl. Remove the name of the side chain that is bonded to the parent chain: Butyl. Add the name of the smaller ring with its prefix: cyclobutane. Finally, the correct name of the compound is Cyclohexylbutylcyclobutane.

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