Which of the following substances is never a Bronsted-Lowry acid in aqueous solution? A) Hydrogen fluoride, HF(g). B) Sodium phosphate, Na3PO4(s) . C) Ammonium chloride, NH4Cl(s) . D) Hydrogen bromide, HBr(g) . E) sodium bicarbonate, NaHCO3(s)

Answer:

8.1293534120006496

Explanation:

hope this helps

Explanation:

first of all open the menu

Answer:

in group 17

Explanation:

just took the quiz

These four elements are most likely in group 17. Hence, option C is correct.

A substance can-not be broken into simple components by any chemical reaction. every element is made up of own type of atom, that’s why the chemical elements are all very different from each other. everything in the universe contains these halogens the atoms of at least one or more elements.

In group 17 element are noble gases like chlorine, bromine, iodine, astatine, they are also called as halogen as they react with metals to form salts.

In these group all elements have high melting points as compare to the other group elements.

They all are soluble in water.

These four elements are most likely in group 17. Hence, option C is correct.

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J. None of the above.

The total amount of energy in a closed system is conserved, meaning that it cannot be created or destroyed, only transformed from one form to another.

What is Energy?

Energy is a physical quantity that measures the ability of a system to perform work. It is an abstract concept that comes in many forms, such as mechanical, thermal, electrical, chemical, and nuclear energy. Energy can be transferred between different objects or systems, and it can be converted from one form to another.

Option H is an example of how thermal energy moves in a predictable pattern. When water is left on a table at a low temperature for a long period of time, its temperature drops below the freezing point of water, and the water molecules start to form ice crystals. This is an example of a predictable pattern in which thermal energy is transferred from the water to the surrounding air, causing the water to freeze.

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Answer:

At 4°C what is not able to decompose into hydrogen and oxygen chemical changes cannot be reverted, in this case it can. It will not change color, because water is always clear, and won't at this state turn into ice. though it can be reverted.

Explanation:

I hope that is correct that's all I've learned so far!

Answer:

A) Its temperature

Explanation:

Answer:

Synthetic fibers are made from synthesized polymers of small molecules. The compounds that are used to make these fibers come from raw materials such as petroleum-based chemicals or petrochemicals. These materials are polymerized into a chemical that bonds two adjacent carbon atoms.

Many mineral display various colors the varieties are mainly compelled by impurities or a slight shift in chemical composition.

Minerals are colored because specific wavelengths of incident light are absorbed, and the color we perceive is produced by the remaining wavelengths that were not absorbed. Some minerals are colorless.

Minerals can be found all over the world in the crust of earth but usually in such small amounts that they not worth yanking. Only with the help of certain geological methods are minerals condensed into economically feasible deposits. Mineral residues can only be removed where they are found.

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Answer:

Question 5: 127.2

The molar ratio between CH4 and C is 1:1

10.6 x 12 = 127.2 grams

Question 10: 5.9

The molar ratio between H(NO3) and Mg(NO3)2 is 2:1

5/63 = 0.0794 moles of H(NO3)

(.0794 / 2) x 1 = 0.0397 moles of Mg(NO3)2

.0397 x 148 = 5.9 grams of Mg(NO3)2

Question 6: 14.0

The molar ratio between CuO and N2 is 3:1

118.1 / 78.5 = 1.504 moles of CuO

(1.504 / 3) x 1 = .501 moles of N2

.501 x 28 = 14.0 grams of N2

Answer:

There are 1.4754246675000002e+24 atoms of Hydrogen within the measurement of 2.45 moles of hydrogen!

Explanation:

Answer:

1). In the periodic table as suggested by Mendeleev, elements were

the periodic table as suggested by Mendeleev, elements werearranged in the order of increasing atomic number.

--> T

2). Sodium (Z=11) is a member of a group called alkaline earth

Sodium (Z=11) is a member of a group called alkaline earthmetals.

--> T

3). Elements to the extreme right of the periodic table are metals.

--> F

They are non-metals .

4). Metalloids have properties of metals and non-metals.

--> T

Carbonated water is used makes sprite a substitute for egg in baking

Carbonated water can add moisture to recipes, but it also works as a great leavening agent

What is carbonated water ?

Carbonated water (soda water, bottled water, sparkling water, club soda, gassed water, also known as bottled water in many places, especially in the United States as seltzer or seltzer water) contains dissolved carbon dioxide. It is also water containing gas. It is artificially injected under pressure or occurs by natural geological processes. Carbonation creates tiny bubbles, giving the water a carbonation quality. Common forms include sparkling natural mineral water, club soda, and commercial sparkling water.

Carbonated water can add moisture to recipes, but it also works as a great leavening agent. Carbonation traps air bubbles and makes the finished product light and fluffy. You can substitute 60 grams of sparkling water per egg. This alternative is great for cakes, cupcakes and quick breads

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The technique to calculate how many grams of element are produced using limiting reactant is shown.

The term "limiting reactant" refers to the reactant that is entirely consumed in a chemical reaction and restricts the quantity of product that can be produced.

1. Determine the limiting reactant by comparing the amount of each reactant to the stoichiometric ratio given in the balanced equation.

2. Use the stoichiometric ratio to calculate the number of moles of the element produced from the limiting reactant.

3. Convert the moles of the element to grams using its molar mass.

The formula is:

Grams of element produced = Moles of element produced x Molar mass of element

where Moles of element produced is calculated using the stoichiometric ratio from the balanced equation, and Molar mass of element is the atomic mass of the element in grams per mole.

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The balanced equation for the reaction of iron with water that results in the production of iron oxide and hydrogen gas is

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

Iron does not react directly with liquid water but react with water vapour. When the reaction happens, it results in the formation of a solid and a gas. The products of the reaction are Iron oxide and hydrogen. The equation of the reaction would be

Fe (s) + H₂O (g) → Fe₃O₄ (s) + H₂ (g)

Now, we need to balance the equation. On the right-hand side, we have 3 Fe, 4 O and 2 H. Similarly on the left-hand side there are 1 Fe, 1 O and 2 H.

To balance the equation, we add 3 to Fe, 4 to H₂0 and 4 to H₂.

As a result, the balanced chemical equation for the reaction would be

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

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Answer:

Excess lemon juice: 162.25 - 92.54 = 69.71

Excess water: 910.08 - 169.55 = 740.53

Explanation:

Excess reactant #2: Water

158.32 x 1/215 x 2/2 x 230.25 = 169.55 g water

Excess lemon juice: 162.25 - 92.54 = 69.71

Excess water: 910.08 - 169.55 = 740.53

Answer:

Forensic drug chemists analyze samples of unknown materials including powders, liquids and stains to determine the chemical identity or characteristics of the compounds that make up the sample. samples submitted as evidence in a drug-related case can contain one compound or a mixture of many compounds.

Answer:

welcome

Explanation:

Uses of Rutherfordium

Because rutherfordium is made within the lab, there are not very many uses for this element commercially. On the other hand, rutherfordium has been used within the laboratory setting to conduct research. Most elements that are highly radioactive are used for nuclear power and medicinal purposes.

Answer:

the escape velocity

Explanation:

To do this, your rock has to go very fast – more than 11 kilometers per second. This velocity is called the escape velocity, the speed an object must achieve in order to overcome the gravitational attraction of a celestial body (be it a planet, a star, or a galaxy) and escape into space

found it online, lol better then nothing

Answer:

Explanation:

41.369

Answer:

The answers are B and D.

Explanation:

This is because neutralisation process that contain sodium, potassium and ammonium will produce salt and water.

Explanation:

1. The gaseous exchange in the lungs occurs in the alveoli. They are tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.

Chargaff's criteria, DNA from all cells of all creatures should include a 1 : 1 ratio of pyrimidine and purine bases.

According to Chargaff's criteria, DNA from all cells of all creatures should include a 1 : 1 ratio of pyrimidine and purine bases. More specifically, the amounts of guanine and adenine should be identical to each other in terms of their proportions to cytosine and thymine, respectively.

A and T and G and C bases in DNA are always equal in amount, according to this rule. (Adenine, Thymine, Guanine, and Cytosine make up the nucleotide triphosphates.) Erwin Chargaff (1905–2002), a renowned Austrian–American scientist who worked at Columbia University, is honored by having this rule bear his name.

The Chargaff's Rule was established by Erwin Chargaff and serves to illustrate the nitrogenous component of the DNA double helix. The DNA of every organism has an equal number of purines and pyrimidines, or a 1 : 1 ratio, according to this statement.

Therefore, the correct answer is option a. Chargaff's rule.

The complete question is:

DNA has equal number of adenine and thymine residues (A=T) and equal number of guanine and cytosine (G=C). These relationships are known as

a. Chargaff's rule

b. Coulomb's law

c. Le-Chatelier's Principle

d. Van't Hoff plot

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Answer: pretty sure its 0.214 moles * 40.3g/mole = 8.6g (2 sig figs) of MgO, and

0.035 moles * 40.3g/mole = 1.4g of MgO

Explanation:

An atom of strontium-90 has 38 protons because the number of protons in an element is determined by its atomic number, which is always a whole number. The atomic number of strontium is 38, which means that a neutral strontium atom has 38 protons in its nucleus.

The "90" in strontium-90 refers to its atomic mass, which is the sum of its protons and neutrons. Since strontium-90 has a mass number of 90, and strontium has an atomic number of 38, we can calculate the number of neutrons by subtracting 38 from 90, which gives us 52 neutrons. Therefore, the nucleus of strontium-90 contains 38 protons and 52 neutrons.

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Answer: rytesttrt5rtr

Explanation:

Answer:

Number of energy levels that the element has.

Explanation:

The period number (n) is the outer energy level that is occupied by electrons. The period number that an element is in, is the number of energy levels that the element has.

Gasoline blending in petroleum refineries involves analyzing the properties of different components and determining the optimal mixing ratios to produce gasoline that meets specific octane rating and quality requirements.

Gasoline blending is a critical process in petroleum refineries where different components are combined to produce the desired gasoline product. In this example, the challenge is to blend gasoline from three different components.

To solve the gasoline blending problem, various factors need to be considered such as the desired octane rating, volatility, and environmental regulations. The first step is to determine the optimal proportion of each component based on their individual characteristics. This involves analyzing the properties of each component, such as its research octane number (RON), motor octane number (MON), and vapor pressure.

The second step is to develop a blending strategy that achieves the desired gasoline specifications. This involves determining the appropriate mixing ratios of the three components to meet the target octane rating and other quality requirements. The blending process requires precise calculations and adjustments to ensure the final gasoline product meets the desired specifications.

Additionally, economic considerations play a role in gasoline blending. The cost of each component and the market demand for specific gasoline grades can influence the blending decisions. Refineries aim to optimize the blend to minimize costs while meeting quality standards.

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