what did immortality-seeking alchemists create by mixing sulfur, charcoal, and potassium nitrate?
Answer:
Gunpowder was discovered somewhat inadvertently by Chinese alchemists, who were trying to develop an elixir of immortality. If you're not aware, there are three primary components to gunpowder: saltpeter (potassium nitrate), sulfur, and charcoal. ... The use of sulfur by the Chinese is also ancient.
Explanation:
What was the effect of decreasing the copper's mass?
Answer:
Decreasing the temperature of the copper made the final temperature decrease.
Heat emitted by copper reduces as copper's mass decreases. As the mass of copper lowers due to a decrease in heat gain by water, the final temperature also drops.
What is heat?The transfer of kinetic energy from an energy source to a medium, an object, or from one to the other is referred to as the creation of heat. The sun is the source of all energies. It is the natural source of solar energy, heat, and light. Thermal energy can move through three different channels: conduction, convection, and radiation.
Therefore, the increase in temperature is always proportionate to the mass of water. Thus, the final temperature will be lower if we increase the water mass. The temperature will be lower in the end. The density reduces as volume grows. Consequently, density drops as temperature rises.
Thus, heat emitted by copper reduces as copper's mass decreases. As the mass of copper lowers due to a decrease in heat gain by water, the final temperature also drops.
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Does molasses need to be refrigerated after opening?
A chemical reaction is when substance are changed into other substances.
True or False
Answer:
True
Explanation:
coz it is when one or more substances are mixed to produce one substance
Answer:
true
Explanation:
when its asking for a chemical reaction its asking for if it changed or had any effects like changing color or having weird effects on things it is mixed with or touches so its true
1. A substance which takes the shape and volume of its container is a?
Solid
Liquid
Gas
Crystal
Answer:
Liquid
Explanation:
Liquid
Answer:
Gas
Explanation:
Gas takes the shape and volume of its container because it doesn't have a definite shape or volume.
Liquid is wrong because it takes the shape of its container, but has a definite volume.
Gas is wrong because it has a definite shape and volume.
Crystal is definitely wrong.
The relative atomic mass of chlorine is 35.5.
When calculating relative atomic mass, which particle is the mass of a chlorine atom compared
to?
Given what we know, we can confirm that relative atomic mass is calculated by comparing the particles to the atomic mass of a carbon-12 atom.
Why compare to carbon-12?Carbon is a very common element. It was been studied greatly, telling us a great deal about the atom. It contains 6 protons and 6 neutrons.This makes it very stable and the standard for comparison.Therefore, given its abundant nature and the fact that it has been extensively studied, we can confirm that a carbon 12 atom has exactly 6 protons and 6 neutrons, making it very stable and the standard to which other atoms are compared.
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If two trucks are moving at the same speed, but truck A has a mass of 3,000 kg, and truck B has a mass of 4,500 kg, what statement is true?
Question 3 options:
Truck A has greater kinetic energy.
Truck A will have a greater stopping distance.
Truck B will have a greater stopping distance.
Truck B has less kinetic energy.
Answer:
C, Truck B will have a greater stopping distance. Took the test got it right.
Explanation:
Answer:
the answer is c
Explanation: the truck with less kg means that it will be more likely to stop fast but if you have a high kg it will slide till it stops thus the answer is c
What is the formula for ammonium
Answer:
The formula for ammonium is NH₄⁺
Classify each of the following as abiotic or biotic.
A. Sand
B. Grass
C. Air
D. Rabbits and deer
E. Humans
Answer:
D.Explanation:
#I'm not sure#happy learningWhat property determines whether an acid is a strong acid or a weak acid?
The dissociation of the ions
The total number of molecules
The pH of the acid
Answer:
the pH of the acid is the property that determines whether an acid is a strong acid or a weak acid
How much is the oxygen valency?
What products would you expect from the reaction of ammonia and sulfuric acid in aqueous solution
Answer:
(NH4)2SO4
Explanation:
2NH3(aq) + H2SO4 (aq) ---> (NH4)2SO4(aq)
Ammonia reacts with sulfuric acid to give the fertilizer ammonium sulfate.
What is the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen
A precious metal is _________________ a. An element with super and electric and thermal conductivity, high luster, and sensitivity. B. A highly sought after dense, shiny, soft precious metal that has been used as money for many centuries. C. An highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity. D. A soft, sensitive, and lustrous element with the highest conductivity of any element. Please select the best answer from the choices provided A B C D.
Answer:
c.
an highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity.
Explanation:
A precious metal is a highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity, hence option C is correct.
How precious metal is differed from the base metal?Rare metallic chemical elements with a high economic value are known as precious metals. The valuable metals are often less reactive chemically than most elements.
Iron-free metals and alloys are not considered base metals. Base metals have a propensity to tarnish, oxidize, or corrode with time or when exposed to the environment, in contrast to valuable metals.
Base metals typically cost less than precious metals since they are more plentiful in nature and sometimes easier to mine.
Therefore, a precious metal is a highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity.
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what is the electron configuration of a n3- anion?
Answer:
You can see in the above illustration of the periodic table that N is in Period 4, Group 5A, and p-block. Before reaching N, you will pass through the atomic orbitals 1s, 2s, and 2p. The electron configuration of N3- is N3-: 1s22s22p6 .
Explanation:
Convert 4.0 moles of krypton into liters of krypton.
Answer:
4.0 moles of krypton converts to 89.6L.
Explanation:
To convert moles to liters, remember that at standard temperature and pressure (STP), 1 mole is equal to 22.4 liters. Multiply your mole value - in this case, 4.0 - by the molar volume constant, 22.4L, to convert moles into liters. 4.0 x 22.4 is equal to 89.6, thus your answer is 89.6L.
We can check this by dividing 89.6 by 4.0, which will give us the molar volume constant 22.4L, proving that this answer is correct.
What is the relationship between Avogadro number, mole, and mass number?
Describe how you would crystalize potassium nitrate from it's aqueous solution
Answer:
Potassium nitrate crystals are among the safest and easiest crystals to grow. Potassium nitrate (KNO3) is also known as saltpeter. It’s used in processed meats, fertilizers, gunpowder, fireworks, and many science projects. Here’s how to make potassium nitrate crystals and a look at how to up your game to grow a big crystal.
Materials
It’s fine to do this project in your kitchen. All you need is:
Potassium nitrateWaterCooking pot or microwave-safe bowl
Explanation:
Thanks
NaC2H3O2 HOH --> HC2H3O2 NaOH Since the two products are a weak acid and a strong base, we expect this mixture to be basic. When NaF reacts with water in the same manner, the products would be NaOH and _______.
The products of the reaction would be NaOH and HF
From the question,
We are to determine the products of the reaction between NaF and water in the same manner as the given reaction.
To determine the other product, we will write the equation for the reaction
The equation for the reaction is
NaF + H₂O → NaOH + HF
Hence, the products of the reaction would be NaOH and HF.
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Why is fluorine more reactive than and bromine
Answer:
- The Valence/Bonding Electrons (whatever name you address them as) in Flourine are closer to the nucleus than the Valence/Bonding Electrons are in an atom of Bromine.
Explanation:
Hopefully this was helpful!
chemical properties of sodium
Answer:
Density 0.97 g.cm -3 at 20 °C
Melting point 97.5 °C
Boiling point 883 °C
oxidation states +1, −1 (rare)
Explanation:
Have a nice day
Identify three elements that form only one CATION.
Answer:
hyrogen,Lithium,beryllium
What allows us see the color green?
A
The green wavelength is absorbed.
B
The green wavelength is reflected.
C
All colors but green are reflected back.
D
The green wavelength vibrates the air particles.
Answer:
When (B) the green wavelength is reflected, we are able to see green.
I hope this helped at all.
In an electromagnetic spectrum, complimentary colors are absorbed and reflected , the color which is visible is the reflected color, hence the green wavelength is reflected which enables to see the color green.
What is electromagnetic spectrum?The electromagnetic spectrum consists of electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.
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Zn(s) + Cu2+ —> Zn2+(aq) + Cu(s)
In this reaction, copper __ electrons, therefore it is the __ agent.
A. loses, reducing
B. gains, oxidizing
C. loses, oxidizing
D. gains, reducing
Answer: do you guys know the answer
Explanation:
Answer:
gains,oxidizing
Explanation:
Zn(s) + Cu^2+---> Zn^2+(aq) + Cu(s)
I got the answer right on usatp.
A compound is 2. 00% H by mass, 32. 7% S by mass, and 65. 3% O by mass. What is its empirical formula? The third step is to calculate the mole ratios of the elements present. To do this, you will divide each molar amount by the smallest molar amount. The molar amounts of the elements present are:.
Lead has a density of 11.29 g/mL. If you had 186 g of lead, what would its volume be?
Write the balanced chemical equation for the following reaction. Also, classify the
reaction as sythesis, decomposition, single replacement, double replacement, or combustion.
aluminum sulfate + barium chloride —> aluminum chloride + barium sulfate
Answer:
Explanation:
Al2(SO4)3 + 3BaCl2 ====> 2AlCl3 + 3BaSO4
Sorry forgot to say that it is a double replacement. The Ba goes where there Aluminum is and the Aluminum goes where the Barium is.
The internal balance numbers come from the fact that the ions and complex ions have different valance numbers.
6.02 times 10 to the 23 atoms of an element have a mass in grams equivalent to the mass of how many of the atoms in amu?
Answer:
Relation between AMU and Gram
The mass of an atom in amu is numerically the same as the mass of one mole of atoms of the element in grams. One atom of sulfur has a mass of 32.07 amu; one mole of S atoms has a mass of 32.07 g. For compounds, the molecular mass (in amu) is numerically the same as the mass of one mole of the compound in grams.
Explanation:
i hope this helps and can i have branly plz
The salt which in solution gives a pale green precipitate with sodium hydroxide solutionanda white precipitate with barium chloride solution is?
Answer:
Analytical Chemistry. The salt which in solution gives a pale green precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is : Iron (III) sulphate.
2AlCl3 --> 2Al + 3Al2
If you produce 15 moles of Al, how many grams of AlCl3 decomposed?
Answer:
1597,5 gm AlCl3 decomposed
Explanation:
2AlCl3 --> 2Al + 3Al2 If you produce 15 moles of Al, how many grams of AlCl3 decomposed?
FIRST, you need to write down the the correct reaction. Your equation makes no sense
here is the correct question
2AlCl3 --> 2Al + 3Cl2 If you produce 15 moles of Al, how many grams of AlCl3 decomposed?
for every mole of Al produced, we decomposed a mole of AlCl3
so we produced 15 moles of Al, so we decomposed 15 moles of AlCl3
15 moles are 15 X 106.5 = 1597,5 gm AlCl3 decomposed