The heating system on the second floor is being fixed Dr Kline explained Please bring these extra blankets up there for the patience

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Answer 1
Whats the question??

Related Questions

What is the excess reactant of water?

Answers

Answer:

Hydrogen

Explanation:

An example of this can be In this example, hydrogen is the limiting reagent and oxygen is the excess reagent. The amount of product formed is limited by the amount of hydrogen.

Crumpling and tearing cause physical changes to a piece of paper.
Which two characteristics of the paper change?
A. Size
B. Reactivity
I C. Identity
I D. Shape


Please help I’ll give brainlist and no spamming or links just please help

Answers

size and shape. only the appearance of the paper will have changed, but is reversible.

Explain what happens during soil depletion and also how we can help prevent this naturally without chemicals?
PLZ FAST TYY <3

Answers

Answer:  create more healthy products for the soil and animals

Explanation:

The speed at which a chemical reaction proceeds is called

Answers

Answer:

Answer: Reaction Rate

Explanation:

reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.

Which is the pathway of light as it travels through the eye?cornea → iris → retina → lenscornea → iris → lens → retinairis → cornea → lens → retinaretina → lens → iris → cornea

Answers

Answer:

Cornea >iris>lens >retina

Explanation:

Can't exactly figure out the answer but I think it should look like this

Answer: cornea → iris → lens → retina

Explanation: I have my ways ;>

The very act of you observing something
will disturb the system is known as:

Answers

Answer:

The observer effect is the answer.

what is an atom plz answer to get 10 points +brainliest

Answers

atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.
An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across

Four students wrote down their descriptions of rotting.

Nick: Rotting is a chemical change that happens to fruit like strawberries or apples. Rotting happens slower when there is more heat.
Kevin: Rotting is a chemical change that happens to iron objects like nails. It causes iron objects to change color and texture.
Howie: Rotting is a physical change that happens to food like fruit. Rotting happens faster with increased heat and changes a fruits color and odor.
AJ: Rotting is a chemical change that affects food such as fruit. Rotting changes the fruits color and odor and happens faster with increased heat.
Which student had the best description of rotting?

Nick
Kevin
Howie
AJ

Answers

AJ but Kevin would also be right
Hope this helps

Answer:

Technically only AJ got it correct Howie got it wrong because rotting is a chemical not a physical change AJ  was correct becuase he knew what would make the fruit go faster so yes howie would have been right if he got the right kind change.

Explanation:

hope this help

What is the frequency of 14000 X ray photons having an energy of 5.27*10-5 J/Hz

Answers

The frequency of the X - ray is [tex]7.95 \times 10^{28} \ Hz[/tex].

The given parameters:

Energy of the X-ray, E = 5.27 x 10⁻⁵ J

The frequency of the wave is calculated as follows;

[tex]E = hf\\\\f = \frac{E}{h} \\\\[/tex]

where;

h is Planck's constant = 6.626 x 10⁻³⁴ J/Hz

Substitute the given parameters;

[tex]f = \frac{E}{h} \\\\f = \frac{5.27 \times 10^{-5} }{6.626 \times 10^{-34}} \\\\f = 7.95 \times 10^{28} \ Hz[/tex]

Thus, the frequency of the X - ray is [tex]7.95 \times 10^{28} \ Hz[/tex].

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A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?

Answers

Answer:

The frequency of the wave is 34 Hertz

Evaluate: (12)2 ×102 −6.3 ÷2.1


21.4 A


22 B


9.3 C


75 D HELP PLS

Answers

Answer:

answer is 2,445..or B as its noted

Write the chemical formulas and names for the following ionic compounds. Tin4+ and chlorine

Answers

Answer:

SnCl4.

Explanation:

Mr. Jenson's class is observing the growth of one kind of pea plant.


The class wants to design an experiment to answer the question, "What amount of water will cause the plants to produce the greatest number of peas?"

What could the class do to create the experiment?
A.
give all the pea plants the same amount of water and count the number of peas that the plants produce
B.
give all the pea plants different amounts of water and only guess the number of peas that the plants produce
C.
give all of the pea plants different amounts of water and count the number of peas that the plants produce
D.
stop watering all of the pea plants and then count the number of peas that the plants produce

Answers

Answer:

The answer would be C. Giving the pea plants a different amount of water in each one can help you observe how much water produces the most peas in a pea pod.

The answer is C to give all of the pea plants different amounts of water and count the number of peas that the plants produce

Explanation:

Answer:

C. give all of the pea plants different amounts of water and count the number of peas that the plants produce

Explanation:

The class wants to design an experiment that answers the question, "What amount of water will cause the plants to produce the greatest number of peas?"

To answer the question, the experiment should show how many peas the plants produce when they are given different amounts of water. The best way to do this would be to give all of the plants different amounts of water and count the number of peas that the plants produce.

¿Cómo pueden los padres pasar a sus
hijos rasgos como el color de ojos?

Answers

Answer:

Los padres transmiten rasgos o características, como el color de ojos y el tipo de sangre, a sus hijos a través de sus genes. Algunas condiciones de salud y enfermedades también pueden transmitirse genéticamente. A veces, en

why must a ph meter be calibrated by using a solution with a known ph value

Answers

Answer:

A pH calibration is the process of adjusting your pH meter by measuring solutions of a known pH value. This is because the characteristics of your electrode will change over time and this needs to be compensated for. A calibration does this by matching your pH meter to the current characteristics of your pH sensor.

Explanation:

A tank of syngas produced by coal gasification contains 60.0% carbon monoxide, 30.0% hydrogen, and 10.0% carbon dioxide. What is the mass of hydrogen (in g) in 1.00 cubic meter of this syngas mixture at 1.00 atm and 25.0 °C? (1 m³ = 1000 L)

Answers

Considering the ideal gas law, the mass of hydrogen is 24.552 grams.

An ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P× V = n× R× T

In this case, you know:

P= 1 atmV= 1 m³= 1000 Ln= ?R= 0.082[tex]\frac{atmL}{molK}[/tex]T= 25 °C= 298 °K

Replacing in the ideal gas law:

1 atm× 1000 L = n× 0.082[tex]\frac{atmL}{molK}[/tex]× 298 K

Solving:

[tex]n=\frac{1 atmx1000 L}{0.082 \frac{atmL}{molK}x298 K}[/tex]

n= 40.92 mol

The mol of syngas mixture is 40.92 mol.

Syngas mixture contains 30.0% hydrogen. So, there is a mol fraction of [tex]x_{hydrogen} =[/tex]0.3 . Thus, the mols of hydrogen in syngas mixture is calculated as:

40.92 moles of syngas mixture× 0.3= 12.276 moles of hydrogen

Finally, being the molar mass of hydrogen H₂ 2 [tex]\frac{g}{mole}[/tex], then the mass is:

[tex]12.276 molesx\frac{2 grams}{1 mole}[/tex]= 24.552 grams

In summary, the mass of hydrogen is 24.552 grams.

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A compound contains 40%carbon, 6.7%hydrogen, and 56.3%oxygen
calculate the molecular formula of the compound, if it’s vapour density is 90. Note that molecular
mass=2 x vapeur density

Answers

180 might be the answer man

fe3(so4)3->fe(oh)3->fe2o3->fe->feso4->fecl2

Answers

Answer: Id answer it but i think your copy and paste got corrupted!

Explanation:

How does temperature affect winds all
over the globe?

Answers

Answer:

The differences in atmospheric pressure generate winds.

Explanation:

At the Equator, the sun warms the water and land more than it does the rest of the world. Warm equatorial air rises higher into the atmospher and migrates towards the poles. The complex relationships between fronts cause different types of winds and weather patterns.

I hope this helps :)

A gas occupies 900 mL at a temperature of 27 °C. What is the volume at

132 °C?​

Answers

Answer:

4400 ml

Explanation:

Help me with my Science, Part 1 and 2 please this has to be done by tomorrow

Answers

Answer:

Part 1: Condensation is when - a

Condensation happens when- water vapour suddenly freezes

Part 2: Water, condenses, vapour, cold, droplets, Condensation

Part 1, Question One: A., Vapor/gas turns into a liquid
Part 1, Question Two: A., Water vapor suddenly freezes

Part 2: Condensation occurs when water is evaporated and condensed into water droplets. The vapor from the evaporation collects on a cold surface. This can be seen when a cold soft drink has water droplets on the can. The process of the vapors forming these water droplets is called condensation.

Consider the reaction below. 2H2 O2 Right arrow. 2H2O How many moles of water are produced from 13. 35 mol of oxygen? 6. 675 mol 26. 70 mol 53. 40 mol 66. 75 mol.

Answers

Considering the reaction stoichiometry, the correct answer is second option: the total number of moles of water produced from 13. 35 mol of oxygen is 26.7 moles.

The balanced reaction is:

2 H₂ + O₂ → 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

H₂: 2 moles O₂: 1 mole  H₂O: 2 moles

Then you can apply the following rule of three: if by stoichiometry 1 moles of O₂ produce 2 moles of H₂O, 13.35 moles of O₂ will produce how many moles of H₂O?

[tex]amount of moles of H_{2} O=\frac{13.35 moles of O_{2} x2 moles of H_{2} O}{1 mole of O_{2}}[/tex]

amount of moles of H₂O= 26.7 moles

Finally, the correct answer is second option: the total number of moles of water produced from 13. 35 mol of oxygen is 26.7 moles.

Learn more about stoichiometry:

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PLEASE HELP CHEMISTRY

What is the hydronium ion concentration of a solution with a POH of 6.90?
O 6.29 x 10-7 M
6.53 x 10-7 M.
O 7.18 x 10-8 M
O 7.94 x 10-8 M

Answers

Answer:

O 7.94 x 10-8 M

Explanation:

Did the test

The hydronium ion concentration of a solution with a pOH of 6.90 is 7.94 × 10⁻⁸ M.

What is the relation between pH & pOH?

Relation between the pH and pOH will be represented by the below equation as:

pH + pOH = 14

Given that pOH = 6.90

So, pH = 14 - 6.90 = 7.1

Also we know that, pH = -log[H⁺]

[H⁺] = [tex]10^{-pH}[/tex]

[H⁺] = [tex]10^{-7.1}[/tex]M

[H⁺] = 7.94 × 10⁻⁸ M

Hence the concentration of hydronium ion is [tex]10^{-7.1}[/tex] M.

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A 100 watt solar power panel usually costs $146 they are on sale for 0.75 of the regular price what is the sale price

Answers

Answer: $109.5
Multiply $146 (original price) by 0.75 (the percentage) and there’s your answer!

Which element has a greater Ist ionization energy, Phosphorus or Fluorine?

Answers

Answer:

phosphorus

Explanation:

i believe it’s fluorine (?)

mass is the gravitational pull on the earth
-tru
-fals
plz help

Answers

It is TRUE that mass is indeed the gravitational force that pulls on earth

Answer:

I believe the answer is false

Explanation:

Earth's gravity comes from all of its mass. All the mass makes a combined gravitational pull on all the mass in an object. If you were on a planet with less mass than Earth, you would weigh less than you do here. Mass is the quantity of matter in a physical body. It is also a measure of the body's inertia, the resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. Mass is not the gravitational pull on the earth.

A student is asked to describe three random
elements found on the periodic table. All three
elements will FOR SURE have which of the two
following characteristics?
A. similar color and texture
B. shininess and value
C. mass and volume
D. similar boiling and freezing points

Answers

C hope u get it right bye

All three elements  in the periodic table will for sure have characteristic of mass and volume.

What is an element?

An element  is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom which is characteristic of it's own. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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What does it mean to optimize a solution ?
How are solutions optimize

Answers

Question

What does it mean to optimize a solution?

To find out best possible solution for a given problem within the given constraint is generally termed as optimization

How are solution optimize ?

To solve an optimization problem, begin by drawing a picture and introducing variables. Find an equation relating the variables. Find a function of one variable to describe the quantity that is to be minimized or maximized. Look for critical points to locate local extrema.

Both graphite and pure metals are both soft. explain why

Answers

Answer:

In a pure metal, the force needed to make the layers slide over each other is small. This explains why many pure metals are soft. ... The smaller or bigger atoms distort the layers of atoms in the pure metal. This means that a greater force is required for the layers to slide over each other.

Explanation:

In a pure metal, the force needed to make the layers slide over each other is small. This explains why many pure metals are soft. ... The smaller or bigger atoms distort the layers of atoms in the pure metal.

AHHHH HELP IM TIMEd!!!!! WILL BRAINLIEST

Answers

Answer:

211.0

Explanation:

∆G(free energy) = ∆H(enthalpy) - T∆S(entropy)

∆H = 215KJ/mol

T = 90°C = 273 + 90

= 363K

∆S = 11J/mol/K or 11 × 10^-3kJ/mol/K

∆G = 215- 363(11 × 10^-3)

= 215 - 3.993

= 211.007

To the nearest tenth 211.0

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