why would we want to know the percent iron in a mixture if we were using the unknown to build a bridge?

Answer:

give it a shot never know....if you talk to her just be straight up and tell her how you feel, if you don't talk to her then just start talking to her and gt to know her better.

Explanation:

The total reactive power absorbed by the line is: 120-J 160 VA

Given that, a load of 30 - j 40 is connected to a source of 100 v with a phase angle of 30o , through a transmission line with an inductive reactance of 80 ohms.

\(current, $I=I_L=\frac{100 \angle 30^{\circ}}{30-j 40+j 80}=\frac{100 \angle 30^{\circ}}{30+j 40}$\)

\($=2 \angle-23.13^{\circ}$\)

\($\begin{aligned} V_L &=\left(100\left(30^{\circ}\right)-I(j 80)\right.\\ &=\left(100 < 30^{\circ}\right)-(2 L-23.13)(j 80) \\ &=100 L-76.26 \text { volts. } \end{aligned}$\)

\($\begin{aligned} \text { Power delivered toads }=& V_l I_L^* \\=&(100 < -76.26)(2 L-23.13)^* . \\=&(100 < -76.26)(1.839-j 0.786)^* \\ &=(100 < -76.26)(1.839+j 0.786) \\ &=(100 < -76.26)(2 L+23.13) \\ S &=120-j 160 \mathrm{VA} \end{aligned}$\)

The component of complex power known as reactive power pertains to energy storage and retrieval rather than consumption. Real power, which really does work, and reactive power, which permits transformers to change, generators to produce, and motors to rotate, are the two types of power found in an AC power system.

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Answer:Observable properties are characteristics or things about materials or objects that we can describe using our five senses. Color, texture, hardness, and flexibility are all things we can determine with our senses.

Explanation:

When the pool's center is occupied by the rubber raft. Think of it as the raft's starting position.

Once it reaches the rubber raft, the raft will start to rise when the friend creates a wave by slapping the water.

The raft will really gain energy from the wave, moving upward.

The raft will return to its original place once the wave passes.

The raft will return to its original place where it was before the wave hits it because it is indicated in the question that it is immobile.

As a result, the wave won't take it to the pool's edge.

Because you are only lightly lifted by the waves or because Lee cannot be pushed to the other side of the pool, the wave won't drive the person on the raft over the edge of the pool.

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Answer:

0.0111 M

Explanation:

pH = 4.5

[H3O+] = ?

Relationship between both quantitiesis given by:

pH = -log₁₀ [H3O+]

-pH = log₁₀ [H3O+]

-4.5 =  log₁₀ [H3O+]

[H3O+]  = e ^ (-4.5)

[H3O+] = 0.0111 M

Answer:

\({ \tt{k _{c} = \frac{[Na_{2} O _{2} ]}{[Na] {}^{2} [O _{2} ]} }}\)

Answer:Water is entirely composed of hydrogen and oxygen Being composed of such elusive and invisible elements

Explanation:this is helped to be clear by oxygen and invisible elements like nutrients

The molar mass of the unknown solute is 0.15 g/mol.

We know that the boiling point is one of the colligative properties thus it depends on the amount of the substance. Then we can be able to recall that;

Molality of the solute = Number of moles/ mass of the solvent

We have that;

Molality = 10.5 m

Number of moles of the solute = 1.5 g/M

Where M is the molar mass of the solute

Mass of the solution = 1Kg'

Then;

10.5 = 1.5 g/M/1

10.5 = 1.5 g/M

M = 1.5 g/10.5

M = 0.15 g/mol

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When conduction electrons move to the right in a wire, it indicates the flow of electric current in the opposite direction, which is from left to right. This is based on the conventional current flow convention, where current is considered to flow from positive to negative.

In reality, the movement of electrons is in the opposite direction, from negative to positive, due to the negatively charged electrons being the mobile charge carriers. However, for historical reasons, the convention of considering current to flow from positive to negative was established.

So, if the conduction electrons are moving to the right in a wire, it implies that the electric current is flowing in the opposite direction, from left to right.

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Answer:42 atoms at least

42

Explanation:

1234567912345678912345678912345678

The following compound could have the molecular formula C8H18: 2,3-dimethylpentane.

The molecular formula is a chemical formula that reflects the chemical composition of a molecule. It shows the exact number and types of atoms in a single molecule of a substance. It does not reflect the arrangement of the atoms in the molecule.

In organic chemistry, the molecular formula is essential because it can help identify a compound's structural isomers. A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of atoms.

3-methylhexane, 2-methylheptane, pentane, and hexane are all possible isomers of C8H18. The molecular formula for 2,3-dimethylpentane is C8H18.

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Answer:

Explanation:

Asaturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. Table salt (NaCl) readily dissolves in water.

for earth quake write, a disturbance in a suburban city has cause a massive earth quake and many problems for the citizens living there, add what you want after that

hope this helps :D

Answer:

wow

Explanation:

dang

Answer:

A massive explosion.

Explanation:

Answer:

v = 300 mph due South.

Explanation:

Given that,

The Princess cruise ship left San Francisco and traveled south for 8 hours at a speed of 30mph.

We need to find the velocity of the ship. It can be calculated by total distance divided by total time taken.

Velocity is a vector quantity i.e. it has both magnitude and direction. On the other hand, the speed has only magnitude (scalar quantity).

In this case it is mentioned that the cruise is travelling south with a speed of 300 mph.

Hence, the velocity is 300 mph in South direction.

Answer:

atomic number

Explanation:

atomic number is the number of protons

Answer:

it has...

Explanation:

some good features to have tilting devices:-)

Answer:

If the tilt of the Earth's axis is changed there would be a change in the season because the season is caused by the Earth's tilt (23.5 degrees) and the revolution or orbit.

True. Endiandric acids are a class of natural products that have been extensively studied and isolated from the Australian plant Endiandra introrsa.

These compounds exhibit intriguing chemical structures and possess various biological activities, making them valuable targets for medicinal chemistry research. Researchers have been investigating the pharmacological properties of Endiandric acids, including their potential as anticancer agents, antimicrobial agents, and inhibitors of certain enzymes. The isolation, characterization, and synthesis of these compounds have provided valuable insights into their structure-activity relationships and have paved the way for further exploration of their therapeutic potential. The study of Endiandric acids contributes to our understanding of natural product chemistry and highlights the importance of biodiversity in drug discovery and development.

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Answer:

Cotton Shirts

Explanation:

I would think that the cotton shirts would be more appropriate form of of clothing for summer.

Cotton has tiny pores that enable the sweat to evaporate off your skin, and hence keep you cooler. At the same time it absorbs this sweat, allowing easy evaporation. Synthetic fibers hold heat in, and do not allow sweat to evaporate.

It would be that Rana should buy cottons shirts for summer.

Answer:

Option A.

Explanation:

Probability is expressed in percent, fraction or in whole numbers

The only one that does not express a probability is 25.

A one in four chance, a fifty percent chance, a three in four chance. These all could be probabilities.

25 doesn't express a probability.

If this is incorrect, please, don't refrain to tell me.

Answer:16

Explanation:

The correct answer is B. Metalloids

Explanation:

In this periodic table, the green boxes include elements such as Boron (B), Arsenic (As), and Antimony (Sb). All these elements are known in chemistry as semimetals or metalloids. This classification is because these elements cannot be completely classified into metals or non-metals. Moreover, they all display similar properties including some level of conductivity, malleability, and solid-state. According to this, the correct answer is B.

Answer:

B. Metalloids

Explanation:

Answer:

0.600 is yourr answer and if wrong sorry  

Explanation:

0.600 mol of potassium contain \(3.6 * 10^{23}\) atoms of potassium.

C. 0.600 mol

A mole is the amount (10) of material containing  \(6.022*10^{23}\) particles . This number is also called Avogadro's number.

Given:

Atoms of potassium = \(3.3*10^{23} atoms\)

To find:

Moles of potassium =?

As we know,

\(1 mole = 6.022*10^{23} atoms\\\\1 atom = 1 / 6.022*10^{23} mole\\\\3.3*10^{23} atoms = 1 / 6.022*10^{23} mole * 3.3*10^{23} atoms\\\\3.3*10^{23} atoms=0.600 mol\\\\\)

Thus, 0.600 mol of potassium contain  \(3.6 * 10^{23}\) atoms of potassium.

Therefore, option C is correct.

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The structure of the 4-ethyl-2-methyl-3-propyl heptanoic acid is shown in the image attached

The arrangement and connectivity of the atoms within a molecule are referred to as the structure of an organic substance. Along with other elements including oxygen, nitrogen, sulfur, and halogens, organic molecules are largely made of carbon atoms bound to hydrogen atoms.

It is crucial to remember that organic compounds can exist in several isomeric forms, where the same chemical formula leads to various structural configurations. The connection of atoms or the spatial arrangement of atoms in three-dimensional space might vary between isomers.

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They include the folowing;

1. The break-up of firm particles = Endothermic heat absorbing process

2. The break-up of solute fragments = Endothermic heat arresting process

3. The joining of solute and solvent particles = Exothermic heat bearing process

The Enthalpy of Resolution maybe found in this manner including three elements: ΔHsoln = ΔH1 + ΔH2+ ΔH3

1. Break-up of the solute molecules from each one (extending the solute), this is an endothermic response. (ΔH1)

2. Break-up of the financially sound molecules from each one (extending the solid fragments), this is also an endothermic backlash (ΔH2)

In their divided states, the solute and fit fragments are free to attract each one liquid.

3. The exothermic response of the solute and fit resulting in the composition of the resolution. (ΔH3)

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Answer:

The correct answer is 1.66 atm ≅ 1.7 atm

Explanation:

Given:

T₁ = -13°C + 273 = 260 K (initial temperature)

T₂ = 15°C + 273 = 288 K (final temperature)

P₁ = 1.5 atm

P₂= ?

We use the mathematical expression of Gay Lussac's Law to calculate P₂, as follows:

P₁/T₁ = P₂/T₂

P₂= P₁/T₁ x T₂ = (1.5 atm)/(260 K) x 288 K = 1.66 atm ≅ 1.7 atm

Since the law says that the temperature of a gas is directly proportional to the pressure, when the temperature is increased, the pressure increases.

The sample of pure carbon would contain approximately 2.135 x 10²⁴ carbon atoms.

The majority of carbon atoms—98.93%—have masses of 12 atomic mass units. A mass of 13.00 atomic mass units is present in 1.07% of the carbon atoms. 14.) Identify one distinction between the nuclei of carbon-12 and carbon-13 atoms in terms of the subatomic particles that can be discovered there.

First, using the atomic mass of carbon, we must determine how many moles of carbon are present in the sample:

1 mole of carbon atoms = 12.01 g of carbon atoms (atomic mass of carbon)

42.552 g of carbon atoms / 12.01 g/mol = 3.545 moles of carbon atoms

Using Avogadro's number, we can then determine how many carbon atoms are present in the sample:

Number of carbon atoms = 3.545 moles of carbon atoms x 6.022 x 10²³ atoms/mole

Number of carbon atoms = 2.135 x 10²⁴ atoms

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