Answer:
A carboxyl group (COOH) is a functional group consisting of a carbonyl group (C=O) with a hydroxyl group (O-H) attached to the same carbon atom. Carboxyl groups have the formula -C(=O)OH, usually written as -COOH or CO2H.
what is distillation used to seperate
Distillation is used to separate liquids from nonvolatile solids as in separation of alcoholic Liquors from fermented materials or in the separation of two or more liquids having different boiling points as in the separation of gasoline Carrison and lubricating oil from crude oil
Answer: It is used to separate a solvent from a solute.
Explanation:
at 25°c the heat of fusion of aluminum is 10.6 kj/mol and the heat of sublimation is 326.4 kj/mol. what is the heat of vaporization of aluminum at 25°c?
The heat of vaporization of aluminium at 25 °C is 315.8 kilojoules per mole.
The sublimation is the phase change of a substance from solid to gas, the fusion is the phase change of a substance from solid to liquid and the vaporization is the phase change of a substance from liquid to gas. The heat of vaporization is the difference between the heat of sublimation and the heat of fusion, that is to say:
[tex]h_{v} = 326.4\,\frac{kJ}{mol}-10.6\,\frac{kJ}{mol}[/tex]
[tex]h_{v} = 315.8\,\frac{kJ}{mol}[/tex]
The heat of vaporization of aluminium at 25 °C is 315.8 kilojoules per mole.
We kindly to check this question on sublimation: https://brainly.com/question/13773373
Why does sugar taste sweet
PLEASE EXPLAIN
Answer:
Because i comes from cane.
Which group has the maximum number of valence electrons attainable?
Answer:
group 18
Explanation:
Elements with the most valence electrons are in group 18
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 object in our solar system has the largest gravitational force
Answer: The sun
Explanation: because it has the most mass
Answer:
Hey there. That would be Jupiter.
Jupiter is the largest in our solar system which means it has the highest gravity.
Why is lead(II) nitrate: “Pb(NO3)2” and not “Pb3NO2”?
Just a bit confused because it looks a bit funny compared to how I learned how to write compounds.
Explanation:
this is because the combining capacity, ie valency, of Pb is 2 of which NO3 is 1. So, when they will combine by cross method, the compound become Pb(NO3)2 (lead II nitrate).
hope this helps you.
Four substances at the same temperature absorb equal
amounts of energy. The specific heat of the four
substances are listed below.
Substance
A. 1.45 J/g °C
B. 2.32 J/g °C
C. 0.98 J/g °C
D. 1.95 J/g °C
Which substance would show the GREATEST increase in
temperature?
A
B
C
D
Answer:
its that DDDDDD
Explanation:
i know this because its that DDDDDDDD
How can a soda can and illumine foil be the same mass?
Answer:
Foil is made from the same material as soda cans (aluminum), but since it's most often contaminated with food waste or combined with plastic (like with yogurt tops), there's no guarantee you can recycle it with your aluminum cans.
Explanation:
Mark me brainly please
how to keep apples from browning without lemon juice?
Answer:
eat
Explanation:
eat the dang apples
3. Elements in the s and p blocks of the periodic table are called
a. alloys.
b. main-group elements.
C. metals.
d. transition metals.
Answer:
The answer is B: main-group elements.
Explanation:
Answer:
b
Explanation:
Gold's natural state has a definite shape and a definite volume. What is gold's natural state(s)?
O solid
liquid
ОООО
solid or gas
O liquid or gas
Answer:
Solid
Explanation:
Determine the pH of 7.53 x 10-4 mol/L calcium hydroxide solution
Answer:
pH = 11,17
Explanation:
[tex][OH^{-} ] = \frac{n_{OH^{-} } }{V} = \frac{2n_{Ca(OH)_{2} } }{V} = 2[ Ca(OH)_{2} ]\\[/tex]
[tex]Ca(OH)_{2}[/tex] → [tex]Ca^ {2+}[/tex] + [tex]2OH ^ -[/tex]
[tex]7,53.10^-4[/tex] → [tex]7,53.10^-4[/tex] → [tex]1,506^-3[/tex]
pOH = -log [[tex]OH^-[/tex]] = [tex]-log 1,506^{-3}[/tex] ≈ 2,822
pH = 14- pOH = 14-2,822 = 11,178
1340.40 grams of Iron is made to react with nitric acid, find mass of ferri nitrite produced. Use the given equation 2 Fe + 6HNO3 2Fe (NO3 + 3H₂
The mass of ferric nitrate, Fe(NO₃)₃ produced from the reaction given the data is 5792.44 g
Balanced equation2Fe + 6HNO₃ –> 2Fe(NO₃)₃ + 3H₂
Molar mass of Fe = 56 g/mole
Mass of Fe from the balanced equation = 2 × 56 = 112 g
Molar mass of Fe(NO₃)₃ = 56 + 3[14 + (16×3)] = 242 g/mole
Mass of Fe(NO₃)₃ from the balanced equation = 2 × 242 = 484 g
SUMMARY
From the balanced equation above,
112 g of Fe reacted to produce 484 g of Fe(NO₃)₃
How to determine the mass of Fe(NO₃)₃ producedFrom the balanced equation above,
112 g of Fe reacted to produce 484 g of Fe(NO₃)₃
Therefore,
1340.4 g of Fe will react to produce = (1340.4 × 484) / 112 = 5792.44 g of Fe(NO₃)₃
Thus, 5792.44 g of Fe(NO₃)₃ were obtained from the reaction
Learn more about stoichiometry:
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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:
Reaction: Al2(SO4)3 + 3BaCl2 --> 2AlCl3 + 3BaSO4
Type: Double Replacement
Explanation:
1.) First you need to understand what the different reactions are
a.) Synthesis: is a reaction where two or more substances will combine with each other to make one product.
Ex: A + B → AB
b.) Decomposition: when one compound breaks down into two or more substances. (Opposite of synthesis)
Ex: AB → A + B
c.) Single Replacement: when one element replaces another one in a reaction
Ex: A + BC → AC + B
d.) Double Replacement: when the positively charged cations and negatively charged anions of the reactants trade places. Normally this will be the two outer elements combining and the two inner ones combining.
Ex: AB + CD → AD + CB
e.) Combustion: when a substance reacts with oxygen gas and releases energy as light and heat.
Ex: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)
2.) From there you can write out the formula of the different reactants and products and balance the equation.
Three students are labeling organisms in their diorama. Zola wants to label the algae and mushrooms as photosynthetic. Saffi wants to label plants and algae as photosynthetic. Ahmed wants to label plants and all bacteria as photosynthetic. Who is correct?
-Saffi and Ahmed
-Zola only
-Saffi only
-Zola and Ahmed
Answer:
Saffi only
Explanation:
I just took the test and that was the correct answer :)
3. What type of gas do plants take in?
oxygen
carbon dioxide
Answer:
Archaeology is the study of the human past using material remains. These remains can be any objects that people created, modified, or used.
Explanation:
why don't birds get electrocuted when they land on the electric wire?
Answer:
Birds can sit on power lines and not get electric shocks because the electricity is always looking for a way to get to the ground. The birds are not touching the ground or anything in contact with the ground, so the electricity will stay in the power line.
Pls mark as brainliest answer if it helps you
describe the development of the theory of atomic structure
this question is worth 6 marks
What is the formula for ammonium
Answer:
The formula for ammonium is NH₄⁺
Find the percent by mass concentration if the solution was prepared by dissolving 25.0 g of sugar into 100 g of water.
Answer:
25%
Explanation:
Percent by mass is looking at the percentage of mass within a a solution. So since there's 100g of water and 25 grams of sugar, you divide 25 by 100 to get the ratio. Then multiply by 100 to get the percentage.
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
given that the radiusof anion a2- is 0.290 nm, what would you expect the radius of a and a2+ to be
This problem is providing the ionic radius of an anion, A²⁻ as 0.290 nm and asks for that of the cation A²⁺ in comparison to the former.
Firstly, we need to recall the concept of ionic radius, as the distance between the nucleus and the outermost electron shell of an ion. In such a way, we can have two scenarios:
1. Anions result from the gain of electrons exhibited by a nonmetal, which means they turn out bigger than the neutral atom.
2. Cations result from the loss of electrons exhibited by a metal, which means they turn out smaller than the neutral atom.
With the aforementioned, we infer that the cation A²⁺, will me smaller than the anion A²⁻, which means it will have an ionic radius smaller than 0.290 nm.
Learn more:
https://brainly.com/question/12026272https://brainly.com/question/190328151. Hydrogen and nitrogen combine to form ammonia. When nitrogen and hydrogen bond, nitrogen pulls the electrons from hydrogen toward itself. Which statement about the reactants is correct?
A) Hydrogen is oxidized, and nitrogen loses electrons.
B) Hydrogen is oxidized, and nitrogen is reduced.
C) Hydrogen gains electrons, and nitrogen is reduced.
D) Hydrogen is reduced, and nitrogen is oxidized.
2. Which phrase best defines a redox reaction?
A) A reaction in which the number of oxygen atoms is reduced.
B) A reaction in which elements are transferred between different atoms.
C) A reaction is which oxygen combines with different atoms.
D) a reaction in which elements are released from the system.
3.Which statement describes the process of oxidation?
A) Oxidation results in a loss of electrons, so the oxidation number increases.
B) Oxidation results in a gain of electrons, so the oxidation number increases.
C) Oxidation results in a gain of electrons, so the oxidation number decreases.
D) Oxidation results in a loss of electrons, so the oxidation number decreases.
4. Which chemical equation represents a redox reaction?
A) TiCl4(s) + 2H2O(g) → TiO2(s) +4HCl(g)
B) CaO(s) + SiO2(s) → CaSiO3(l)
C) CaCO3(s) → CaO(s) + CO2(g)
D)Fe2O3(s) + 2Al(s) → Al2O3(s) +2Fe(l)
5. Which elements are oxidized and reduced in the reaction below?
Br2 (l) + 2NaI(aq) → I2 (s) + 2NaBr(aq)
A) Bromine (Br) is oxidized, and iodine (I) is reduced.
B) Iodine (I) is oxidized, and bromine (Br) is reduced.
C) Sodium (Na) is oxidized, and bromine (Br) is reduced.
D) Bromine (Br) is oxidized, and sodium (Na) is reduced.
Answer:
did you do it yet?
Explanation:
Answer:
1. Hydrogen is oxidized, and nitrogen is reduced.
Explanation:
What happens to the ionizing rate if the steps of ionizing polyprotic acid increases?
Answer:
An acid that contains more than one ionizable proton is a polyprotic acid. The protons of these acids ionize in steps. The differences in the acid ionization constants for the successive ionizations of the protons in a polyprotic acid usually vary by roughly five orders of magnitude.Answer:
What happens to the ionizing rate if the steps of ionizing polyprotic acid increases? Well they have this stepwise ionization process occurs for all polyprotic acids
Explanation:
Convert 25 gigaseconds into centiseconds
25 gigaseconds is equal to 2,500,000,000,000 centiseconds
b) Explain how a burette and a conical flask should be rinsed before a titration experiment?
[tex] \large \text{Answer} \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]
If you rinse the burette with the solution to be used, then any tiny amounts of liquid remaining are the same as the solution used to fill the burette, so they will not change the concentration of the solution in any way. This is to prevent contamination.
~⭐Hope it helps you ⭐~
Describe the process of pasteurization?
Answer:
Pasteurization is a process in which packaged and non-packaged foods (such as milk and fruit juice) are treated with mild heat, usually to less than 100 °C (212 °F), to eliminate pathogens and extend shelf life.
how do atoms achieve noble-gas configurations in single covalent bonds
Answer:
by sharing an electron
Explanation:
each of the two bonded atoms share an electron....making a single covalent bond b/w the two....like in....F - F
what happens to the particles of a solid as it becomes a liquid
Answer:
melting
Explanation:
Answer:
When a solid is heated the particles gain energy and start to vibrate faster and faster. ... Further heating provides more energy until the particles start to break free of the structure. Although the particles are still loosely connected they are able to move around. At this point the solid is melting to form a liquid.
Explanation: