It is January. The temperature is 33°F, and the wind is blowing. Huge clouds are coming in from the west.

Based on these circumstances, what is a reasonable prediction?

It will probably snow today.
A heat wave will come through today.
The sun will come out for the rest of today.
It will probably not snow today.

Answer:

Yellow

Explanation:

Thymol blue has a brownish-green or reddish-brown color and is a good pH indicator. It changes from red to yellow at a pH 1.2–2.8 ( acidic) and then from yellow to blue at a pH of 8.0–9.6( alkaline).

Nitric acid is a strong acid which means the pH indicator will change to yellow.

Answer:

(NH4)2SO4

Explanation:

2NH3(aq) + H2SO4 (aq) ---> (NH4)2SO4(aq)

Ammonia reacts with sulfuric acid to give the fertilizer ammonium sulfate.

Given what we know, we can confirm that when carbon and nitrogen form a covalent bond, they will share two electrons between them.

Therefore, given that the covalent bond formed between nitrogen and carbon in the formation of isocyanic acid entails the sharing of electrons, we can confirm that these atoms will share two electrons in order to complete the octet of the nitrogen atom.

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Answer:39 min

Explanation:

Answer; the answer is variations

The unit of genetic material that determines how living things look is called variations, look below for more description.

Hereditary variety alludes to contrasts among the genomes of individuals from similar species. A genome is all the innate data — every one of the qualities — of a creature. Hereditary variety is the distinction in DNA successions between people inside a populace.

For example, the human genome contains somewhere close to twenty and 25 thousand qualities.

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Answer:

abc

Explanation:

Answer:

273.6 g

Explanation:

mass =(density)(volume)

mass=(5.7g/cm^3 )(48 cm^3)

cancel out your cm^3 and your are left with grams

multiply (5.7g)(48)=273.6 g

The mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.

Density is defined as the degree to which a material is packed together.

It is also defined as a mass per unit volume of the substance.

Its SI unit is kilogram per cubic meter or  gram per meter.

Density can be expressed as

Density = mass / volume

Mass =  density x volume

As given, Density = 5.7 g/cm³

                Volume = 48 cm³

So, Mass =  5.7 g/cm³ x  48 cm³

               =  273.6 grams

Thus, the mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.

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This chemical is known as lead (II) nitrate. It is an ionic assembly (salt compound) comprised of lead cations in the +2 oxidation state. With regard to the naming convention, each lead (II) cation is paired with two nitrate anions, each having a charge of -1.

Chemical nomenclature is a set of principles for naming chemical substances in a systematic manner. The International Union of Pure and Applied Chemistry designed and developed the most widely used nomenclature in the world (IUPAC).

The basic goal of chemical nomenclature is to guarantee that no ambiguity exists between a spoken or written chemical name and the chemical compound to which the name refers. Each chemical name should only relate to one substance.

It is required to indicate the charge of these cations or compounds containing these cations when identifying them. Ionic compounds are formed when cations and anions interact. The cation of an ionic compound is named first, followed by the anion. When writing their chemical formulae, they use the same format.

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Answer:

23

Explanation:

there are 23 pairs of chromosomes

46 individula chromosomes

but each parnet contribute one chromosome to each pair

Answer:

23 :)

Explanation:

Answer:

60%

Explanation:

En la reacción:

2SO₂ + O₂ → 2SO₃

Donde 2 moles de SO₂ reaccionan por mol de O₂.

El peso atómico del SO₂ es:

1S = 32g/molₓ1 = 32g/mol

2O = 16g/molₓ2 = 32g/mol

SO₂ = 32g/mol + 32g/mol = 64g/mol

Y el peso atómico de O₂ es:

2O = 16g/molₓ2 = 32g/mol

Las moles de SO₂ y O₂ son:

SO₂: 40g ₓ (1mol / 64g) = 0.625 moles

O₂: 25g ₓ (1mol / 32g) = 0.7813 moles

Para una completa reacción de SO₂ se necesitan:

0.625 moles SO₂ ₓ (1mol O₂ / 2 mol SO₂) = 0.3125 moles de O₂

Así, las moles en exceso de O₂ son:

0.7813 moles - 0.3125 moles = 0.4688 moles O₂

En gramos:

0.4688 moles O₂ ₓ (32g / mol) = 15g O₂ están en exeso.

El porcentaje en exceso es:

15g / 25g ₓ 100 =

The pKa of a compound is the pH at which the compound is half-ionized. At a pH of 2.24, the aspirin is mostly in the form of its acid, so we can assume that the pKa of aspirin is 2.24.

Half-ionized refers to a state where some, but not all, of the molecules or atoms have had one or more of their electrons removed and become positively charged ions. This can occur either naturally in a gas or as a result of electromagnetic radiation, such as X-rays, passing through the gas. In some cases, such as in the interstellar medium, the gas is only partially ionized, meaning that only a fraction of the atoms or molecules have been affected. In such cases, the fraction of the gas that has been ionized is referred to as the ionization fraction. Half-ionized gas can be found in extreme environments, such as those found in star-forming regions or in the outer layers of the atmosphere of Jupiter. The half-ionized state can also be found in laboratories, where lasers can be used to create plasmas with a range of ionization fractions.

\($$\begin{aligned}& \text { Reaction :- Aspirin } \rightarrow \mathrm{Asp}^{-}+\mathrm{H}^{+} \\& 0.1-x \times x \\& \mathrm{Ka}=\frac{\left[\mathrm{Asp}^{-}\right]\left[\mathrm{H}^{+}\right]}{\text {(Aspirin) }} \\& =\frac{x^2}{0.1-x} \\& \text { Find out }[\mathrm{H}+]=\mathrm{x} \\& \mathrm{PH}=-\log _{10}\left[\mathrm{H}^{+}\right] \\& \log _{10}\left[\mathrm{H}^{+}\right]=2.24 \\& {\left[\mathrm{H}^{+}\right]=\text {antilog } 2.24} \\& =1.73 \times 10^{-2}=x \\&\end{aligned}$$\)

\($$\begin{aligned}& \text { Now Ka }=\frac{x^2}{0.1-x} \\& \mathrm{Ka}=\frac{1.73 \times 10^2}{0.1-0.0173} \\& \mathrm{Ka}=\frac{\left(\left(1.73 \times 10^{-2}\right)\right)^2}{0.0627} \\& \mathrm{Ka}=\frac{2.9929 \times 10^{-1}}{0.01827} \\& \mathrm{Ka}=36.32 \times 10^{-4}=3.63 \times 10^{-3} \\& \text { Pka }=-\log _{10} \mathrm{ka} \\& =-\log \left(3.63 \times 10^{-3}\right) \\& =2.44\end{aligned}$$\)

Thus, pKa of aspirin is 2.24

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Explanation:

{c}^C . {d}^D / {a}^A . {b}^B

Answer:

2 single, 0 double, and 1 triple

Explanation:

H-C≡C-H

Answer:

The range of values of some property

Explanation:

A.pex, and the comments on the other answer

The best defines a spectrum is The range of values of some.

A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without gaps, across a continuum. The word was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum. It thereby became a mapping of a range of magnitudes (wavelengths) to a range of qualities, which are the perceived "colors of the rainbow" and other properties which correspond to wavelengths that lie outside of the visible light spectrum.

Spectrum has since been applied by analogy to topics outside optics. Thus, one might talk about the "spectrum of political opinion", or the "spectrum of activity" of a drug, or the "autism spectrum". In these uses, values within a spectrum may not be associated with precisely quantifiable numbers or definitions. Such uses imply a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion. Nonscientific uses of the term spectrum are sometimes misleading. For instance, a single left–right spectrum of political opinion does not capture the full range of people's political beliefs. Political scientists use a variety of biaxial and multiaxial systems to more accurately characterize political opinion.

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Make 2 in 102 as the power of 10

10^2 = 100

101 - 10^2 = 101 - 100 = 1

Hope it helped:)

Answer:

27.19 cm.

Explanation:

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

Height (h) of cylinder = 6461.76 cm

Volume (V) of cylinder = 15000000 cm³

P1 (π) = 3.14

Radius (r) =.?

Thus, we can obtain the radius of the cylinder water tank by using the following formula as illustrated below:

V = πr²h

15000000 = 3.14 × r² × 6461.76

15000000 = 3.14 × 6461.76 × r²

Divide both side by 3.14 × 6461.76

r² = 15000000 / (3.14 × 6461.76)

Take the square root of both side

r = √[15000000 / (3.14 × 6461.76)]

r = 27.19 cm

Thus, the radius of the cylinder water tank is 27.19 cm.

Answer:

Inference

Explanation:

A conclusion reached on the basis of evidence and reasoning is called an inference.

Answer:

6680 J

Explanation:

Answer:

5 million million atoms can fit at the end of a needle

Answer:

Let's just say 5 million million hydrogen atoms could fit at the end of a needle.

Explanation:

Atoms are 100 picometers, and to compare, the amount of even 1 centimeter, a calculator can't even figure out how many picometers are in a centimeter because there is just too much picometers.

The orbital hybridization of a central atom with one lone pair and bonding to two other atoms is (B) sp². This is because the central atom has three electron domains (two bond pairs and one lone pair) that must be arranged in a trigonal planar geometry to minimize electron repulsion.

This requires the hybridization of one s and two p orbitals to form three sp² hybrid orbitals that are 120° apart. The three hybrid orbitals are used to form sigma bonds with the two bonded atoms and the lone pair occupies an unhybridized p orbital perpendicular to the plane of the sp² hybrid orbitals.

This arrangement allows the lone pair to be located far from the bonding pairs, reducing electron repulsion and stabilizing the molecule.

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Answer:

c) hereditary

Explanation:

This means that if your parents had one eye colour, you'll most likely have the same one because you share the same genes, and it's passed down to you.

Answer:

The 2 one

Explanation:

The correct model for the flow of energy is  Sun→  Algae → Shrimp → Red drum. Option B is correct.

Therefore, the correct model for the flow of energy is  Sun→  Algae → Shrimp → Red drum.

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Answer:

-27.7 grams of PbI2 are produced.

Explanation:

When hydrochloric acid is diluted in water, the beaker feels hot as Dissolving the solute is an exothermic process. Therefore, the correct option is option D.

Thermal expansions These are exothermic reactions because the energy leaves the reaction and diffuses into the environment. The energy is often transported as heat energy, which raises the temperature of the reaction mixture plus its surroundings. The temperature rise is noted using a thermometer. When hydrochloric acid is diluted in water, the beaker feels hot as Dissolving the solute is an exothermic process.

Therefore, the correct option is option D.

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The hydroxide ion concentration [OH-] in an aqueous solution is 6.66 x 10⁻⁹ M

Experimental measurements of the pKw of water at 25ºC yielded a result of 14.0. The same method used to determine the pKa of all other water-soluble compounds that can function as acids in aqueous solution can also be used to determine this value from the examination of thermodynamic or electrochemical data for these aqueous solutions.

Water has a pkw=14

So it can be represented as,

[H+] [OH-] = 1×10^-14

Given [H+] = 1. 5×10^−6

So, [OH-] = (1*10^-14) / ( 1.5*10^-6)

               = 6.66 x 10⁻⁹ M

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Answer:

Sorry can't right now and theres pedos out there so no

Love, lavenderhelper

Answer: what even is this kind of answer

Explanation:

To make 2.0L of a 0.30mM solution, \(6.4 \times 10^3\) millilitres of a 0.80mM ammonium hydroxide solution are needed.

An aqueous solution containing ammonium (\(NH_4\)) and hydroxide (\(OH^-\)) ions is known as ammonium hydroxide. Because it is a strong base, it totally dissociates in aqueous solutions, resulting in an alkaline reaction.

Ammonium hydroxide is utilised in a wide range of commercial and domestic applications, including the production of cleaning agents. It can be used for cleaning, deodorising, and bleaching, among other things. It serves as a dough conditioner and an

acidity regulator in the food sector.

\(6.4 \times 10^3\)

Let x = 0.80 mM ammonium hydroxide solution in millilitres is needed.

We know that molarity (mM) = moles/L

Given:

\(M_1\) = 0.80 mM

\(M_2\) = 0.30 mM

\(V_2\) = 2.0 L

As a result, we may construct the equation shown below:

(0.80 mM)(x mL) / (1000 mL/L) = (0.30 mM)(2.0 L)

Solving for x, we get:

x = \(6.4 \times 10^3\)  mL

In order to produce 2.0L of 0.30mM solution, \(6.4 \times 10^3\)  mL of a 0.80mM ammonium hydroxide solution are needed.

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