Answer:
Hey sorry if i took too long but I believe it is A
Explanation: sorry if im wrong
hope this helps
Answer:
It is A
UW
Explanation:
Chemistry a sugar solution contains 26g of sugar in .50 l of solution. What is the concentration
Answer:
b cause it say sit
Explanation:
njj
QUESTION 5
Sugar and coal are not minerals because they are ___.
A. crystals
B. organic
C. made by humans
D. solid
E. not found with a specific chemical composition
I Will only give brainliest if you are correct
Answer:
They are organic
Answer the question below
Answer:
C
Explanation: I think
What evidence should Mitchell collect to BEST support the second law of thermodynamics?
Answer:
The Second Law of Thermodynamics poses an insurmountable problem for ... More time will make things worse for the Darwinist, not better. ... error fail-safe and proof-reading devices utilized for quality control, assembly ... No one really supports the idea that the sun + non life = life
Explanation:
According to the second law of thermodynamics, the energy of the universe is conserved but the entropy of the universe is continuously increasing.
What is the second law of thermodynamics?The second law of thermodynamics put some restrictions on the direction of heat transfer and attainable efficiencies of heat engines. This law stated that any spontaneously happening process will lead to an escalation in the entropy (S) of the universe.
This law explains that the entropy of an isolated system will never decrease with time. Mathematically, the 2nd law of thermodynamics:
ΔS (universe) > 0
where ΔS of the universe is the change in the entropy of the universe.
The second law of thermodynamics provides the criterion for the feasibility of any physical or chemical process. A physical or chemical process cannot take place unless it must follow both the 1st and 2nd laws of thermodynamics.
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What is represented in each block of the periodic tables?
the answer is c
it wants me to write a 20 letter explanation but ion got time for that
One ion is represented in each block of the periodic tables. Hence option C is correct.
What is periodic table?Periodic table is defined as a table with the chemical elements ordered by increasing atomic number, displaying the elements to show trends in their characteristics. The elements are arranged in the Periodic Table in accordance with their related chemical and physical characteristics. There are rows and columns in the table. The periodic table's vertical columns stand in for Groups. Periods are shown in the table as horizontal rows.
Ions are defined as any atom or collection of atoms that carries one or more electrical charges, either positive or negative. The positive ions are known as cation while the negative ions are known as anion. When an atom's number of protons and electrons is out of balance, ions are created.
Thus, one ion is represented in each block of the periodic tables. Hence option C is correct.
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I need the answer to this multiple-choice
Which substance is heatergeneous mixture
A. Pure olive oil
B. A sugar cube
C. Chicken noodle soup
D. Liquid dishwashing soap
Answer:
The answer is A
Explanation:
I am Mr. Know It All
A rock with a mass of 70 grams is dropped into a graduated cylinder with 30 mL of water in it. The water level rose to 35 mL calculate the density of the rock in g/mL
Answer:
14
Explanation:
70g/(35mL-30mL)=14g/mL
If a rock with a mass of 70 grams is dropped into a graduated cylinder with 30 milliliter of water in it. The water level rose to 35 milliliters, then the density of the rock in gram / milliliter would be 14 gram / milliliter.
What is density?It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.
The mass of ṭhe rock = 70 grams
The volume of the rock = 35 milliliters - 30 milliliters
= 5 milliliters
The density of the rock = mass of the rock / volume of the rock
=70 grams / 5 milliliters
= 14 gram / milliliter
Thus, the density of the rock would be 14 gram / milliliter.
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The electron configuration of aluminum, atomic number 13, is (Ne) 352,
3p1. Aluminum is in period...
3
2
13
6
Answer:
Aluminium is in period number 3
The aluminum is placed in period 3 of the periodic table.
What is period?Periods are the seven horizontal rows that make up the periodic table. Periods are the horizontal rows in the periodic table. Each period represents the consecutive occupation of orbitals in an atom's valence shell, also with long periods representing the occupation of orbitals in a d subshell.
What is periodic table?The periodic table could be thought of as a visualization of the elements, from which it is simple to determine the physical and chemical properties of any given element.
It is given that, electronic configuration of aluminum is [tex][Ne]3s^{2},3p^{1}[/tex].
It can be seen that last electrons enter in 3p orbital , here 3 tells about the period of the element where it will be placed in periodic table.
Therefore, aluminum will be placed in period 3.
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What are the signs of ΔH, ΔS, and ΔG for the spontaneous conversion of a crystalline solid into a gas?
Answer:
ΔH>0, ΔS>0, and ΔG<0
Explanation:
Crystalline solid → Gas
ΔG < 0 T as the reaction is Spontaneous The solid is converted into gas so the Entropy will increase as randomness is more in gas than solid, ΔS > 0using Gibbs equation
ΔG = ΔH - TΔS
as ΔG < 0 and ΔS > 0
ΔH - TΔS <0
ΔH < TΔS ⇒ΔH >0
This gives that ΔH will be Positive but it will be less than TΔS. So we need to provide some energy to convert crystalline solid into gas.
7th grade help me plzzzzz
Answer:
A & B
Explanation:
The answer for the first one is A because the proton is found in the nucleus with the neutron
The answer for the second was is B because the Neutrons, protons and electrons are all subatomic particles, as they are the main particles that make up an atom.
Proton = Positive Charge (+)
Neutron = Neutral charge (=)
Electron = Negative Charge (-)
Answer:
1- positive
2- A
3-A
Explanation:
Human genes can combine in about _________________ different combinations.
A Metal pan will heat up quickly when placed over a gas or electric burner. The Metal pan is a good what...
Answer:
heating up, lol
Explanation:
If the hydronium ion concentration of a substance is 1.0 X 10-6 M, what would be the pH of that substance??
Show/Describe your work.
Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water H2O and carbon dioxide CO2 chemically react to form the simple sugar glucose C6H12O6 and oxygen gas O2.
What mass of water is consumed by the reaction of 6.49g of carbon dioxide?
ANSWER:
2.65 g H2O
Explanation:
6.49g (co2) / 44.009g (co2) x 1 mol (co2) / 1 mol (h2o) x 1 mol (h2o)
=0.147 mol H2O
0.147 mol (H2O) / 1 mol (h2o) x 18.015 g (h2o)
=2.65 g H2O
Which energy transformation produces electricity and is least likely to negatively impact the environment?
Generating electricity from a natural gas-fired power plant
Generating electricity from a natural gas-fired power plant
Generating electricity from a coal-fired power plant
Generating electricity from a coal-fired power plant
Generating electricity from a nuclear power plant
Generating electricity from a nuclear power plant
Generating electricity from a solar panel system
Generating electricity from a solar panel system
electricity from solar panels
Explanation:
All other options produce something after or during the time electricity is made. That something is gas. Not solar
The reaction of zinc metal and hydrochloric acid produces hydrogen gas and zinc chloride. Write the balanced chemical equation. Phases are optional.
Answer:
Zn + 2HCl -----> ZnCl₂ + H₂
Explanation:
The balanced chemical equation for Zn with hydrogen is Zn + 2HCl ---> ZnCl₂+ H₂.
What is balanced chemical equation?
A balanced chemical equation is one in which number of reactant is equal to number of products. When Zinc reacts with hydrogen it will form zinc chloride and hydrogen gas.
Here, 1 molecules of hydrochloric acid are participating in the process, and 1 molecules of hydrogen are being created.
Therefore, The balanced chemical equation for Zn with hydrogen is Zn + 2HCl ---> ZnCl₂+ H₂.
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what is salt
explinnn hhhhhh hh hh
Answer:
salt is a very well known seasoning
Explanation:
hope this helped :)
What are some structural adaptations of adult frogs that help them survive in their environment?
Explain how each adaptation helps the frogs.
Answer:
Well I think that the frogs ability to breath underwater is a adaptation to help them from prededors. Also, they have camophlage to help too.
What is an example of a gas in motion and a fluid in motion?
Answer:
Gas in motion : Vaporization
Examples of fluid flow :
A river flowing down a mountainAir passing over a bird's wingBlood moving through a circulatory systemFuel moving through an engine.Explanation:
What is the mass of CO2 lost at 20 min from the limestone sample?
How much CO2, in moles, was lost at 20 min from the limestone sample?
How much CO3 2- was lost at 20 min from the limestone sample?
Answer:
The mass, CO2 and CO3 from the limestone sample is discussed below in details.
Explanation:
(A) mass loss of sample of limestone after 20 min
= 0.8437g-0.5979g = 0.2458 g
From the given reaction of limestone, 2 mol of the sample gives 2 moles of CO 2.
Therefore
184.4 g ( molar mass of limestone) gives2× 44 g of carbon dioxide.
1 g of sample gives 88/184.4 g of carbon dioxide
Hence 0.2458 g sample gives
= 88/184.4 × 0.2458 g = 0.117 g carbon dioxide
(B) mole of CO 2 lost = weight/ molar mass
= 0.117 g / 44 g/mol =0.0027 mole
(C). 1 mol of limestone contain 2 mol of carbonate ion
From the reaction we know that carbonate ion of limestone is converted into carbondioxide
Hence lost carbonate ion = 0.2458 g
(D) we know that
1 mol limestone contain 1mol CaCO 3
Hence in sample present CaCO 3
= 1mole / 184.4 g × 0.8437 g= 0.00458 mol CaCO3
please help!!
which oneeeee
how an ionic compound made up of charged particles can be electrically neutral
Answer:
Explanation:
Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.
A. Liquid water can change shape, but water vapor cannot.
B. Both liquid water and water vapor have definite volume.
C. Water vapor is less dense than liquid water.
D. Particles of water vapor have less energy than particles of liquid water.
Answer: c
because gasses are less dense than liquids
PLEASE HELP!! Circuit A consist of two wires and a battery. Circuit B consist of the same strength battery and the same type of wires, but it also contains a light bulb. Which circuit has more resistance?
Answer:
light bulb B
Explanation:
more resistance
why was the royal society of london formed
Answer:
..............what.......
Check all that apply
Use tongs to remove
hot items
Touch the surface.
t
Turn off after use
Answer:
1 and 3
Explanation:
i hope this helps it was an instruction on edge
Answer:
It's 1, Use tongs to remove hot items and 2, Turn off after use
Explanation:
On Edge 2021
How many nucleons are in an Iodine element? Okay
Answer:
there are 74
Explanation:
Two atoms that are different isotopes of the same element have
Two atoms that are different isotopes of the same element have same number of protons.
What are elements?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.Each element has atoms which are unique to itself.
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Steps in a Nerve Impulse diagram
Answer:
..Repolarization. 2
1 Action potential. Unlike a graded potential, an action potential is capable of traveling long distances. ..
3 Hyperpolarization. ..
4 Refractory period.
Explanation:
