You are applying ice to a sprained ankle. calculate the heat, in joules, that is absorbed by 50g of ice at 0 degree C placed on the skin and warmed to body temperature (37 degree C).

Volume of ammonia gas : 10.67 L

Given

10.0 L of nitrogen gas

16.0 L of hydrogen gas

Required

Volume of ammonia gas

Solution

Reaction

N₂ + 3H₂ ⇒ 2NH₃

From Avogadro's hypothesis, at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles  

Find limiting reactant :

N₂ : 10 : 1 = 10

H₂ : 16 : 3 = 5.3

H₂ as a limiting reactant

So volume of NH₃ based on H₂

= 2/3 x volume H₂

= 2/3 x 16 L

= 10.67 L

Answer:

9x +6b

hope this helps

have a good day :)

Explanation:

Answer:

you would more than likely have hot coca.  

Explanation:

Because when its cold out you don't want something cold, its common sense  lol.

slope = 2 .................

Answer:

λ= 4.99 * 10^-17

Explanation:

C= F * λ

F= frequency(Hz)

λ= wavelength(m)

C= 3.0 * 10^8

F= 6.01 * 10^24

λ= ?

3.0 * 10^8= (6.01 * 10^24) λ

***Simplify

λ= 4.99 * 10^-17

Answer:

the answer is 1. nonmetal; low

1) List known values

V2: 4952 mL

C2: 1.65

C1: 11.10

V1: ?

2) Set the equation

3) Plug in values en solve for V1.

736.11 mL of solution should be used.

The correct answer is "nuclear reaction because the nucleus is changing during the reaction." In a nuclear reaction, the nucleus of an atom is altered, resulting in a change in the element or isotope.

Chemical reactions, on the other hand, involve the rearrangement of electrons in atoms or molecules, resulting in the formation of new chemical bonds but not a change in the nucleus. Therefore, the change in the nucleus is the key characteristic that distinguishes a nuclear reaction from a chemical reaction.

The question is asking whether the reaction described is a chemical or nuclear reaction and why. Based on the information given, the correct answer would be:

Chemical reaction because the nucleus is not changing during the reaction.

This is because in a chemical reaction, the chemical formulas of the reactants and products may change, but the nucleus of the atoms involved remains unchanged. In a nuclear reaction, the nucleus of the atoms changes, resulting in different elements or isotopes.

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Answer:

D. Endoplasmic reticulum

Explanation:

Because Rough endoplasmic reticulum contains Ribosomes.

Answer:

D = 4 g/mL

General Formulas and Concepts:

Density = Mass over Volume

Explanation:

Step 1: Define

m = 100 g

V = 25 mL

D = unknown

Step 2: Find D

Answer:

water should be the answer because its one of the 4 elements and air

Answer:

Sun

↓

Alfalfa

↓

Rabbit

↓

Coyote

Explanation:

To find - Choose one food chain in the web. Name all of the organisms in that chain. Start with a producer and end with the top level consumer.

Solution -

We know that,

A food chain is a series of events in which one organism eats another and obtains energy.

The Food chain is as follows :

Sun

↓

Alfalfa

↓

Rabbit

↓

Coyote

Ammonium chromate

May I get brainliest if its right? ;-;

Answer: B.

Explanation:

Trust me already took the quiz on it its B.

Answer:

Yes its B

Explanation:

Answer:

About 8.94.

Explanation:

Because we are given a 500. mL volumetric flask, the solution will have a volume of 500. mL.

Find the number of moles of zinc fluoride needed. Recall that molarity is simply moles per liter of solution:

\(\displaystyle 500.\text{ mL} \cdot \frac{0.173\text{ mol ZnF$_2$}}{1\text{ L}} \cdot \frac{1\text{ L}}{1000\text{ mL}} = 0.0865\text{ mol ZnF$_2$}\)

Convert this to grams. The molecular weight of zinc fluoride is 103.38 g/mol:
\(\displaystyle 0.0865\text{ mol ZnF$_2$} \cdot \frac{103.38\text{ g ZnF$_2$}}{1\text{ mol ZnF$_2$}} = 8.94\text{ g ZnF$_2$}\)

In conclusion, about 8.94 grams of solid zinc fluoride should be added.

The branch of chemistry that deals with the study of heat and its relationship to chemical reactions and processes is known as "thermochemistry." Thermochemistry involves the measurement and calculation of heat transfer and the study of heat changes in chemical reactions.

Calorimetry, involves the use of calorimeters, is an important tool in thermodynamics. A calorimeter is a device designed to measure the heat changes associated with chemical reactions or physical processes. It allows scientists to accurtely determine the heat absorbed or released by a substance during heating or cooling. Calorimeters work based on the principle of energy conservation. As measuring temperature changes, either directly or indirectly, the calorimeter can quantify the amount of heat gained or lost by a substance. 

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Answer:

its C

Explanation:

The formation of 2,3-dimethylbutadiene (also known as isoprene) can be explained by an elimination reaction, specifically, the dehydrohalogenation of 2,3-dimethyl-2-chlorobutane. Here is a proposed mechanism for this reaction:

Step 1: Protonation of the chloroalkane

The 2,3-dimethyl-2-chlorobutane molecule reacts with an acid (such as sulfuric acid or hydrochloric acid) to form its corresponding carbocation. In this step, a proton from the acid adds to the chlorine atom, resulting in the formation of a carbocation intermediate.

Step 2: Formation of the double bond

The carbocation intermediate undergoes an elimination reaction, where a hydrogen atom adjacent to the carbocation is abstracted by a base (such as a chloride ion) to form a C=C double bond. This step involves the removal of a proton from one of the beta carbons (carbon atoms adjacent to the positively charged carbon) and the formation of a new pi bond.

Step 3: Deprotonation

In this step, a base (such as water or hydroxide ion) deprotonates the resulting alkene to form the final product, 2,3-dimethylbutadiene (isoprene).

Overall reaction:

2,3-dimethyl-2-chlorobutane → 2,3-dimethylbutadiene + HCl

The proposed mechanism involves the initial protonation of the chloroalkane, followed by the formation of a carbocation intermediate and the subsequent elimination of a proton to form the double bond. Finally, deprotonation occurs to generate the desired product, 2,3-dimethylbutadiene.

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Answer:

YES!

Explanation:

Answer:

165.3 cm^3

Explanation: hope this is correct!!

P1 * V1 / T1 = P2 * V2 / T2

P1 = 84.6 kPa

V1 = 215 cm³

T1 = 23.5°C = 23.5 + 273 K = 296.5 K

At STP:

P2 = 101.3 kPa

V2 = ?

T2 = 273 K

Answer:

The screw with 10 wraps is the correct answer

Explanation:

The screw with 6 wraps would create a strong hold.

The strongest member of the family of wood screws is a lag screw. It is a reliable and sturdy fastener that frequently has a square head or an externally powered hex drive.

In general, lag screws are significantly stronger and heavier than standard wood screws. They have a tapered point and coarse threads.

Thus, The screw with 6 wraps would create a strong hold.

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The atomic ratio of carbon to oxygen in carbon monoxide (CO) is 1:1, and the atomic ratio of carbon to oxygen in carbon dioxide (CO₂) is 2:1.

Firstly, we can analyze the decomposition of carbon monoxide (CO) and carbon dioxide (CO₂) to determine the atomic ratios involved.

Let's denote the atomic ratio of carbon to oxygen in carbon monoxide as x, and the atomic ratio of carbon to oxygen in carbon dioxide as y.

According to the given data;

Decomposition of carbon monoxide (CO);

Oxygen produced = 3.36 g

Carbon produced = 2.52 g

We know that the atomic mass of carbon is 12 g/mol, and the atomic mass of oxygen is 16 g/mol. Using these values, we can calculate the number of moles for each element;

Number of moles of oxygen = mass / atomic mass = 3.36 g / 16 g/mol = 0.21 mol

Number of moles of carbon = mass / atomic mass = 2.52 g / 12 g/mol = 0.21 mol

Since the atomic ratio of carbon to oxygen in carbon monoxide is x, we can write the following equation;

0.21 mol C / (0.21 mol O) = x

Simplifying the equation, we have;

x = 1

Therefore, the atomic ratio of carbon to oxygen in carbon monoxide is 1:1.

Decomposition of carbon dioxide (CO₂);

Oxygen produced = 9.92 g

Carbon produced = 3.72 g

Following the same calculations as before;

Number of moles of oxygen = mass / atomic mass = 9.92 g / 16 g/mol = 0.62 mol

Number of moles of carbon = mass / atomic mass = 3.72 g / 12 g/mol = 0.31 mol

Since the atomic ratio of carbon to oxygen in carbon dioxide is y, we can write the following equation;

0.31 mol C / (0.62 mol O) = y

Simplifying the equation, we have;

y = 0.5

Therefore, the atomic ratio of carbon to oxygen in carbon dioxide is 1:0.5, which can be simplified to 2:1.

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--The given question is incomplete, the complete question is

"Missed this? watch kcv: atomic theory; read section 2.3. you can click on the review link to access the section in your text. carbon and oxygen form both carbon monoxide and carbon dioxide. when samples of these are decomposed, the carbon monoxide produces 3.36 g of oxygen and 2.52 g of carbon, while the carbon dioxide produces 9.92 g of oxygen and 3.72 g of carbon. Calculate the atomic ratio of carbon to oxygen in carbon monoxide, and carbon dioxide."--

The volume of the stock solution needed for dilution is 0.065 L.

How to find the volume of concentrated solution needed for dilution?

To determine the volume of the stock solution needed for dilution, we can use the dilution formula: C1V1 = C2V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Given:
C1 = 1.5 M (concentration of the stock solution)
C2 = 0.54 M (final concentration after dilution)
V2 = 0.18 L (final volume)

We need to find V1, the volume of the stock solution.

Using the formula: C1V1 = C2V2, we can solve for V1:

V1 = (C2V2) / C1
V1 = (0.54 M × 0.18 L) / 1.5 M

Now, calculate the value:

V1 ≈ 0.065 L

With two significant figures, the volume of the stock solution needed for dilution is 0.065 L.

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Answer:

The definition of atom: The Atom is the basic unit of matter.

Types of atoms: There are 3 types of atoms, protons, neutrons, and electrons.

A strong IKI (Iodine-Potassium Iodide) result indicates that the product of the reaction is present.

This means that amylase activity is optimal, the substrate is present, and amylase is effectively working to break down the starch. The strong IKI result confirms the successful progress of the enzymatic reaction. The iki test measures the amount of starch that is converted to sugar molecules over a specific period of time. When the amylase activity is at an optimal level, the rate of conversion should be relatively high, meaning that the amount of starch converted to sugar molecules should be relatively high. This is indicated by a strong iki result, as it indicates that the reaction rate is at a satisfactory level.

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Option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

The long-run equilibrium condition for perfect competition is that price (P) is equal to average total cost (ATC), which is also equal to marginal cost (MC), and marginal revenue (MR).

Option (d), P=ATC=MR=MC, best represents the long-run equilibrium condition for perfect competition. In perfect competition, firms operate at the minimum point of their average total cost curve, where price equals both average total cost and marginal cost. This condition ensures that firms are earning zero economic profit and are producing at an efficient level.

In the long run, if firms are earning economic profit, new firms will enter the market, increasing competition and driving prices down. Conversely, if firms are experiencing losses, some firms may exit the market, reducing competition and causing prices to rise. This process continues until firms reach a state where price equals average total cost, marginal cost, and marginal revenue, ensuring a long-run equilibrium.

Therefore, option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

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Answer:

B. pipette

Explanation:

A pipette can barely measure anything, they mostly don't have numbers on them and only squeeze out a few drops. Other materials, graduated cylinder and (buret) burette, have measuring lines on them. They can hold much more amount of liquid. This makes a pipette the least precise way to measure a liquid.

When CH2OH is introduced into the previously evacuated vessel , A physical change takes place because intermolecular attractions are overcome. The correct option to this question is D.

Remove (or evacuate) the air between two glass tubes to form a vacuum and reduce heat loss through conduction and convection.

Methanol is known to contain extremely polar oxygens, so it can exhibit hydrogen bonding. It is known that methanol can form very strong hydrogen bonds. Hydrogen bonds are known to form when the positive charge of hydrogen atoms accumulates significantly.

Hydrogen bonding is a unique type of inter-dipole attraction between molecules rather than covalent bonding to hydrogen atoms. This results from the attraction between a hydrogen atom bonded to an extremely electronegative atom such as an O, N, or F atom and an additional extremely electronegative atom.

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