When any salt is dissolved in water, the ionic bonds between the atoms must be broken in order for the salt to dissolve. The energy
stored up in these bonds then must be
A) convert into light
B) stored in the water
C) released to the environment
D) converted into mechanical energy
Answer:
C released to the environment
Explanation:
I just did it in class
Which of the following properties is responsible for the movement of tectonic
plates?
Temperature of oceanic crust
Thickness of Earth's layers
Density of continental crust
Convection currents in the asthenosphere
Consider the model of the nitrogen atom .
Which electron configuration matches this model?
Answer:
The atomic number of Nitrogen is seven. So it contains seven protons and seven electrons in neutral form. Also, the electronic configuration cited above contains seven electrons among which two electrons are present in first shell and five electrons are present in valence shell respectively.
Explanation:
What is the mass of 5.26 mol Fe2(SO4)3?
Answer in units of g.
2100 g Fe₂(SO₄)₃
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Stoichiometry
Using Dimensional AnalysisAtomic Structure
Reading a Periodic TableExplanation:Step 1: Define
5.26 mol Fe₂(SO₄)₃
Step 2: Identify Conversions
Molar Mass of Fe - 55.85 g/mol
Molar Mass of S - 32.07 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of Fe₂(SO₄)₃ - 2(55.85) + 3(32.07) + 12(16.00) = 399.91 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 5.26 \ mol \ Fe_2(SO_4)_3(\frac{399.91 \ g \ Fe_2(SO_4)_3}{1 \ mol \ Fe_2(SO_4)_3})[/tex]Multiply/Divide: [tex]\displaystyle 2103.53 \ g \ Fe_2(SO_4)_3[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
2103.53 g Fe₂(SO₄)₃ ≈ 2100 g Fe₂(SO₄)₃
What is the difference between reactants and products?
Answer:
The reactants are the substances that start the chemical reaction. The products are the substances that are produced in the chemical reaction.
Explanation:
What is the difference between reactants and products?
Answer:Reactants It is a substance that is present at the start of a chemical reaction.The substance(s) to the left of the arrow in a chemical equation. Products It is a substance that is present at the end of a chemical reaction.The substance(s) to the right of the arrow. #CARRYONLEARNING #STUDYWELLplease help due soon!
Answer:
W X Z Y. It is the strongest to the least
How many moles of glucose does 1.2 x 10^24 molecules represent
2.0 mol C₆H₁₂O₆
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
1.2 × 10²⁴ molecules C₆H₁₂O₆ (glucose)
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 1.2 \cdot 10^{24} \ molecules \ C_6H_{12}O_6(\frac{1 \ mol \ C_6H_{12}O_6}{6.022 \cdot 10^{23} \ molecules \ C_6H_{12}O_6})[/tex]Divide: [tex]\displaystyle 1.99269 \ mol \ C_6H_{12}O_6[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
1.99269 mol C₆H₁₂O₆ ≈ 2.0 mol C₆H₁₂O₆
Dissolve one teaspoon of sugar for each cup.Stir.What do you observe?Is there any difference?
a measuring cylinder cannot be used to measure the volume of regular shaped solids true or fakse
Answer:
False
Explanation:
The statement is false because the volume of an irregular object can either be measured by the use of a measuring cylinder or an overflowing jar. That's the standard method of measuring irregular objects volume.
2. zinc (III) chlorate →
Answer:
27
Explanation:
I need help with this
Answer: B
Explanation: All you have to do to find out if an equation is balanced is count the number of atoms on each side. To be balanced, they must be equal.
In case you didn’t know: The number in front of an element or compound means that you will multiply. For instance, 2AlBr3 would have 2 Al atoms and 6 Br atoms. The subscript number just means how many atoms there are in that compound.
What is the chemical formula for carbon fibre? (specifically if possible)
Answer: 90% Polyacrylonitrile (PAN)
(C3H3N)n - n signifies the chain
10% Rayon & Pitch Base
Explanation:
Just Because...
What type of reaction is Ni + MgSo4
can electricity and light bring about reversible and irreversible changes ? Give examples
Answer:
yes
Explanation:
Yes, electricity and light can bring reversible and irreversible changes. Light : Reversible change - The light illuminate it's surrounding's environment which is reversible when we turn off the source of the light. ... And,this reaction is an irreversible change
why is it true that particles in a rock lying on the group have kinetic energy and energy
Answer:
Particles of objects have both kinetic and potential energy. Because particles are constantly in motion, they have kinetic energy. These particles are arranged in specific ways in different objects. Therefore, they also have potential energy.
Explanation:
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Ca2+ is an example of
a. cation
b.anion
c.ionic bond
d. ionic compound
HELP HELPPPPPPPPPPP
what can be said about the properties of a compound?
Answer:
A compound has unique properties that are distinct from the properties of its elemental constituents. One familiar chemical compound is water, a liquid that is nonflammable and does not support combustion. It is composed of two elements: hydrogen, an extremely flammable gas, and oxygen, a gas that supports combustion.
Explanation:
One main difference between a Prokaryotic cell and an Eukaryotic cells is __________.
Question 3 options:
Prokaryotic cells have many organelles
The Eukaryotic Cell has a nucleus
The Prokaryotic cells have a cell wall
The Eukaryotic cell is the only cell with DNA
Answer:
The Eukaryotic cell has a nucleus
Explanation:
Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.
Need help!!!
Will give brainliest for answer
Give oxidation and reduction half-reactions to the equation provided
Explanation:
here u go kid , welcome kid :)
its a lot cheaper and wanted to know if you think it would be just as good?
Need help ASAP. Gave only 10 min
Answer:
Explanation:
If it interests you, you could check out Maxwell's demon. If he is not in operation (and he likely isn't), then the answer is D.
Heat always transfers from hot to cold -- at least at beginning levels of chemistry.
How many atoms are in 2.00 x 10^-7 moles of Helium
Answer:
1.20 10^17
Explanation:
convert to atoms using Avogadro's number
2.00 x 10^-7 moles * 6.022 X 10^23 atoms= 1.20 10^17
Which reason best explains why plasmas are good conductors of electricity? They have mobile charged particles. They are at extremely high temperatures. They are made up of particles in fixed positions. They have slow-moving nuclei that carry electricity.
Answer:
They have mobile charged particles.
Explanation:
Plasma refers to very hot matter such that the electrons in matter are ripped away from the atoms leading to the formation of an ionized gas.
We know that the carriers of electricity are charged particles. Any state of matter that has an abundance of charge carriers will definitely be a good conductor of electricity.
Therefore, plasmas are good conductors of electricity because they have a lot of mobile charged particles.
What is solar energy?
Answer:
Solar energy is energy from the sun converting it to thermal or electric energy. It is renewable resource meaning it will never die out. It is also called radiant energy.
Explanation:
This is urgent please help...
Write a balanced equation for this reaction.
___ C2H2 + ___ O2 ---> ___ CO2 + ___ H2O
Please help
Answer:
2C2H2+5O2--->4CO2+2H2O
Explanation:
.....................
Information to make scientifically supported judgments by describing the Importance of Ernest Rutherford's gold-foil experiment.
Answer:
Rutherford's experiment led to the rejection of JJ Thomson's raisin bundle model. In the experiment, a thin gold strip was bombarded with alpha particles. According to Thomson's atomic model, all alpha particles should have passed through the strip, but in this experiment it was found that some of the particles were reflected backwards. Based on his experiment, Rutherford published the result that almost the entire mass of an atom is concentrated in its nucleus. Rutherford's atomic model was later improved by Niels Bohr, who published the Bohr model.
HELLPPPPP! The students were making zinc, Zn by reacting copper, Cu, with zinc nitrate, Zn(NO3)2. They were expecting to produce 5.63 g of copper but they recovered only 5.1 g copper. Calculate the percent yield
Answer:
[tex]5.1 \div 5.63[/tex]
MgCl2+ Na2O---> NaCl+ Mgo
Balance the equation
Answer:
MgCl2 + Na2O ---> 2NaCl + MgO
How could you increase the atomic number?
Answer:
So the atomic number increases with each element. The atomic mass is the sum of the protons and neutrons. As the atomic number increases it causes an increase in the atomic mass. However sometimes there is not a corresponding increase in the number of neutrons...
Explanation:
:)) good luck!!!
