A storm is moving toward your house at a speed of 20km/h. It is now
60km away from your house. In what time will the storm reach your
house? Remember to put the correct units too. *

Answer:

The total amount of heat needed to change 2250 grams of silver at 200 ºC to 0ºC is 5805 J.

Explanation:

The melting point of silver is 961.8 ºC, meaning that heat released is entirely sensible. Therefore, the amount of heat released by the sample of silver ([tex]Q[/tex]), measured in joules, is determined by the following formula:

[tex]Q = m\cdot c\cdot (T_{f}-T_{o})[/tex] (1)

Where:

[tex]m[/tex] - Mass, measured in kilograms.

[tex]c[/tex] - Specific heat of silver, measured in joules per grams-degrees Celsius.

[tex]T_{o}[/tex], [tex]T_{f}[/tex] - Initial and final temperatures, measured in degrees Celsius.

If we know that [tex]m = 0.225\,kg[/tex], [tex]c = 129\,\frac{J}{kg\cdot^{\circ}C}[/tex], [tex]T_{o} = 200\,^{\circ}C[/tex] and [tex]T_{f} = 0\,^{\circ}C[/tex], then the heat received by the sample of silver is:

[tex]Q = (0.225\,kg)\cdot \left(129\,\frac{J}{kg\cdot ^{\circ}C} \right)\cdot (0\,^{\circ}C - 200\,^{\circ}C)[/tex]

[tex]Q = -5805\,J[/tex]

The total amount of heat needed to change 2250 grams of silver at 200 ºC to 0ºC is 5805 J.

Answer:11.25g

Explanation:

Answer:

sheer adhesion

Explanation:

edge 2021

Answer:

the 2p5 should have filled up one more so it would be 2p6 ...which assuming it's not an excited electron?

Answer:

I think that it is related to the orbitals and the electron pairs in each atom.

try reading about "Vsepr" theory

Answer: I believe the correct answer is C.  41 degrees Fahrenheit.

Explanation: Time and temperature are the most essential elements for monitoring the growth of disease-causing bacteria in food. The temperature danger zone lies between 40 degrees Farenheit and 140 degress Fahrenheit.

Hope this helps! ^^

Answer:

combustion reaction

Explanation:

because we have a carbon based compound reaction with oxygen gas to produce carbon dioxide and water.

Answer:

answer d

Explanation:

methy group is in the second position while the double bond is in the third position

Answer:

By definition [Avogadro Law]

1 mole of ANY gas occupies 22.4L at STP

so 0.75 mole N2 occupies 22.4 x 0.75 = 16.8L at STP

Explanation:

Answer:

Mass = 96 g

Explanation:

Given data:

Number of moles of C = 8 mol

Mass of C in gram = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of C = 12 g/mol

8 mol = mass / 12 g/mol

Mass = 8 mol × 12 g/mol

Mass = 96 g

Answer:

i think it will 3 of each hope it helps. three molecules of each

Answer: 1.5 grams.

Explanation:

Answer:

Yes

Explanation:

Which element requires the least amount of energy to remove the most loosely held electron?

aanswer: bromine

Answer:

true

Explanation:

light travels faster than sound.

Answer:

Water solubility is a measure of the amount of chemical substance that can dissolve in water at a specific temperature. The unit of solubility is generally in mg/L (milligrams per liter) or ppm (parts per million). You can often find it in the section 9 of a safety data sheet (SDS).

Explanation:

Answer:

A

Explanation:

Answer:

1.67×10^25 molecules

Explanation:

No of molecules = no of moles × Avogadros number

No of moles= mass in gram / molar mass

No of moles of water in given sample = 500.3/18

= 27.79 moles

No of molecules = 27.79× 6.02×10^ 23

= 167.32×10^23 or 1.67×10^25

Answer:

HERE IS UOUR ANSWER MATE.............

➡️High-Sodium Foods are :-

1) Smoked, cured, salted or canned meat, fish or poultry including bacon, cold cuts, ham, frankfurters, sausage, sardines, caviar and anchovies.

2) Frozen breaded meats and dinners, such as burritos and pizza.

3) Canned entrees, such as ravioli, spam and chili.

4) Salted nuts.

5) Beans canned with salt added.

➡️ Reducing sodium and increasing potassium in your diet can help control hypertension and lower your risk of cardiovascular disease and death. Lowering blood pressure reduces the risk of heart disease and stroke.

➡️Many fresh fruits and vegetables are rich in potassium:

1 . Bananas

2 . oranges

3 . Cantaloupe

4 . Honeydew

5 . Apricots

6 . Grapefruit

(some dried fruits, such as prunes, raisins, and dates, are also high in potassium)

7 . Cooked spinach.

8 . Cooked broccoli.

9 . Potatoes.

10 . Sweet potatoes.

11 . Mushrooms.

12 . Peas.

13 . Cucumbers.

➡️ A salt is a chemical compound consisting of an ionic assembly of cations and anions. Salts are composed of related numbers of cations and anions so that the product is electrically neutral.

Salt ( for chemistry) is a substance produced by the reaction of an acid with a base. A salt consists of the positive ion (cation) of a base and the negative ion (anion) of an acid.

➡️Most of the salt in food, as well as the salt in a shaker, is sodium chloride. Sodium chloride isan ionic compound with the chemical formula NaCl. Processed foods contain a lot of salt and therefore a lot of sodium (Na). As a result, many people consume too much of this alkali Earth metal.

High-sodium diets have been linked to high blood pressure. High blood pressure, in turn, increases the risk of stroke, heart attack, and kidney failure. Reducing sodium intake may help prevent these health problems.

HOPE IT HELPED YOU .......................

THIS QUESTION WAS TOOOO LONG.....

Explanation:

MARK ME AS BRAINLIST..........................

Answer:

Iron(3+) sulfide

Explanation:

Answer:

The relationship between the frequency of a wave and the wavelength is an inverse relationship, therefore, if the wavelength of a wave increases and the velocity of the wave stays the same, the frequency of the wave decreases.

An example is the ocean wave, if the distance between successive wave crests, which is the wavelength, 'λ', of the wave, increases, while the velocity, 'v', of the wave coming to shore remains the same, the number of wave crest arriving at the beach in a given period of time, which is the frequency of the wave, 'f',  decreases according to the following equation;

f = v/λ

Explanation:

The frequency and wavelength have inverse relationship. With increase in wavelength there has been a decrease in frequency when speed has been kept constant.

Wavelength has been defined as the distance traveled by the wave in a unit time, while frequency has been defined as the rate of the repetition of the wave in unit time.

The relationship between the wavelength and frequency has been given by;

Wavelength = [tex]\rm \dfrac{speed}{frequency}[/tex]

Since the speed has been constant, there has been an inverse relationship between the frequency and wavelength. Thereby with increase in wavelength there has been a decrease in frequency and vice versa.

For more information about wavelength and frequency, refer to the link;

https://brainly.com/question/8037854

Answer: A-Copper.

Explanation:

Copper is the element that could be formed at the anode when a molten salt is electrolyzed due it's variable oxidation state.

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. 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.

Learn more about element,here:

https://brainly.com/question/14347616

#SPJ2

Explanation:

Zn + 2 HCI → ZnCl2 + H2

Hope it will help :)

Answer:

a change in an atom's nunclues usually producing a different elements.

on the other hand, involved only a rearrangedment of electrons and do not involve change in the nuclie

Explanation:

Hope it helps kindly follow me

Answer:

Explanation:

Potassium iodide reacts with oxygen in presence of water to produce potassium hydroxide and potassium diiodoiodate(I) .

5KI + 2H₂O + O₂ =4 KOH + I₂ + K(II₂) .

Answer:

It is H2CO

Explanation:

Answer:

The water is solvent and the salt is solute