How much heat is added if .0948g of water is increased in temperature by .728 degrees C?


.289 J

.803 J

1.46 J

.055 J

Answers

Answer 1

Answer:

0.289J of heat are added

Explanation:

We can relate the change in heat of a substance with its increasing in temperature using the equation:

q = m*ΔT*S

Where Q is change in heat

m is mass of substance (In this case, 0.0948g of water)

ΔT = 0.728°C

S is specific heat (For water, 4.184J/g°C)

Replacing:

q = 0.0948g*0.728°C*4.184J/g°C

q = 0.289J of heat are added


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

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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

mass is the gravitational pull on the earth
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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.

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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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:

How many moles of AgNO3 must react to form 0. 854 mol Ag? mol AgNO3.

Answers

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.

The balanced chemical equation for the dissolution of silver nitrate has been:

[tex]\rm AgNO_3\;\rightarrow\;Ag^+\;+\;NO_3^-[/tex]

The aqueous solution of silver nitrate has been dissociated into the constituent silver and nitrate ions.

In a balanced chemical equation, the coefficient has been equivalent to the moles of each reactant forming the moles of product.

From, the balanced equation,

[tex]\rm 1\;mol\;AgNO_3=1\;mol\;Ag[/tex]

The given moles of Silver has been 0.854 mol. Thus, the moles of silver nitrate required has been given as:

[tex]\rm 1\;mol\;Ag^+=1\;mol\;AgNO_3\\0.854\;mol\;Ag^+=0.854\;\times\;1\;mol\;AgNO_3\\0.854\;mol\;Ag^+=0.854\;mol\;AgNO_3[/tex]

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.

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Explain what happens during soil depletion and also how we can help prevent this naturally without chemicals?
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Answer:  create more healthy products for the soil and animals

Explanation:

How does lemon juice stop an apple from turning brown?

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Lemon juice prevents browning because it is full of ascorbic acid (Vitamin C) and it has a low pH level. The oxygen will react with the ascorbic acid before it reacts with polyphenol oxidase (the enzyme in the fruit).

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

Help

what is isotopes

Answers

Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons.

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

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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 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.

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:

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

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In summary, the mass of hydrogen is 24.552 grams.

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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
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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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The most recent model of an atom is the_____.

Points: 67

Answers

Answer:

answer is electron cloud model

A compound contains 40%carbon, 6.7%hydrogen, and 56.3%oxygen
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Why can't percent yield be greater than one hundred percent?

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Answer:

Percent yield is the maximum amount of product that can be formed in a reaction. Matter cannot be created or destroyed according to the law of conservation of mass, so you cant have over 100%.

Explanation:

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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 :)

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D) a relationship between volume and distance.

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Answer:

C) creating a relationship between mass and volume

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Answers

Answer:

Part 1: Condensation is when - a

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Part 1, Question Two: A., Water vapor suddenly freezes

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Which materials are used to make concrete select all that apply

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Answer:

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Explanation:

Answer:

Explanation:

The principal ingredients that make up the concrete mix are: cement, fine aggregate, coarse aggregate, water, chemical admixtures, and mineral admixtures.

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Answer:

211.0

Explanation:

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

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Answers

Answer:

SnCl4.

Explanation:

A student is asked to describe three random
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Answers

C hope u get it right bye

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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.

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The very act of you observing something
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Answer:

The observer effect is the answer.

Crumpling and tearing cause physical changes to a piece of paper.
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size and shape. only the appearance of the paper will have changed, but is reversible.

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
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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.

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

132 °C?​

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Answer:

4400 ml

Explanation:

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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.

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Answer:

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i believe it’s fluorine (?)

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

Explanation:

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