Answer:b
Explanation:
why do scientist think the earths core have iron in it .
20. How many atoms of Lithium (Li) are in the REACTANTS side of the
equation?
Answer:
2 atoms
Explanation:
The reactants side is the left side of the arrow. Li represents lithium and there is a 2 next do it which indicates that there are 2 lithium particles or atoms
How does the rate law show how concentration changes affect the rate of
reaction?
A. The rate is expressed as the sum of the concentrations of
reactants raised to some power.
B. The rate is expressed as the difference between the
concentrations of reactants.
C. The rate is expressed in terms of concentrations of the reactants
raised to some power.
D. The rate is expressed as a ratio of the concentrations of reactants
raised to some power.
SUBMIT
Answer: C
Explanation: I just did it
The rate law show how concentration changes affect the rate of
reaction. The correct statement is "The rate is expressed in terms of concentrations of the reactants raised to some power".
So, the correct option is C.
What is the rate law?The rate law is a mathematical expression which give relation between rate of reaction to the concentration of reactant.
Let suppose the reaction, A + B → C
Rate law is written as, rate = [A]n[B]m
Where, n and m is order of reaction which determine by experimental.
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Is this answer right ?
Answer:
YESExplanation:
Explanation
#KEEPSTUDYINGYes because it released the most amount of heat overall!!! well done xx
Create a timeline to show how atomic structure was developed over the centuries?
Answer A`bousi
Explanation:
What is the IUPAC name for H2O?
Answer:
I guess it is.....
Oxidane.
Answer:
Technically, dihydrogen monoxide.
Explanation:
You see, the International Union of Pure and Applied Chemistry, also known as IUPAC, hasn't seen a need to define a structural name for water yet.
Following the naming conventions, it should most likely be called "dihydrogen monoxide", but IUPAC has never officially defined this as the chemical name for water.
A 2.0 L sample of helium is under 760 mmHg of pressure and has a temperature of 300k, if the pressure is raised to 1520 mmHg and the temperature is raised to 400 K, what will be the new volume of gas?
Answer:
kggyiuol
Explanation:
PLZZZ HELP BRAINILEST (science)
Answer:
i cannot see the question due to the flash you used
Explanation:
How many moles is 2.80 x 1024 atoms of Si?
Answer:
4.65 moles of Si.
Explanation:
4) How much of the world population lives in countries where there isn't enough water, or
the quality has been compromised?
Answer:
The answer is 1/3 of the population.
Is the chemical equation balanced or unbalanced?
H2 + O2 = H20
O BALANCED
O UNBALANCED
Answer: Is the chemical equation balanced or unbalanced?
Explanation: H2 + O2 = H20
O BALANCED
O UNBALANCED
I have the same problem
Which statement is correct about the law of conservation of energy?
Energy is created when water freezes.
Energy is destroyed when sugar is burned.
Energy stays inside molecules permanently.
Energy is transferred when atoms are rearranged.
Answer:
Energy is transferred when atoms are rearranged
Explanation:
Breaking bonds between atoms need energy. When new bonds are formed, energy is released
The law of conservation of energy is energy isn't created or destroyed
A and B are wrong because there is creation or destruction of energy
C is wrong because energy can be transferred (think touching a hot stove with your finger. heat is transferred from the stove to your finger OUCH!)
D is correct because the energy is still there, but in a different form
Which molecule will undergo only London dispersion forces when interacting with other molecules of the same kind? a.HCl b.C2H5OH c.NH3 d.CH4
Answer:
CH4
Explanation:
London dispersion forces are a type of force acting between atoms and molecules that are normally electrically symmetric; that is, the electrons are symmetrically distributed with respect to the nucleus. They are part of the van der Waals forces(Wikipedia). It is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. This force is sometimes called an induced dipole-induced dipole attraction(Chem Purdue).
If we consider HCl, C2H5OH and NH3, we will discover that they all have polar bonds. Consequently, dipole - dipole interaction as well as hydrogen bonds exist between their molecules.
CH4 is nonpolar. Being a nonpolar molecule, the only possible intermolecular interaction forces between its molecules is the London dispersion forces.
Predict the shape of the molecule.
B. trigonal planar
A. linear
D. bent
C. tetrahedra
Plsss help this midterm ends 12.30
A piece of indium with a mass of 21.93 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 49.3 cm3. The correct value for the density of indium measured in g/cm3 from these data is:
Answer:
We know that,
Density= mass upon volume.
mass= 21.93g
Volume= 49.3 - 46.3
= 3 cm³
Density = 21.93÷ 3
= 7.31 g/cm³
Hope it helps :))
A piece of indium with a mass of 21.93 g is submerged in 46.3 cm³ of water in a graduated cylinder. The water level increases to 49.3 cm³. The correct value for the density of indium measured in g/cm3 from these data is 7.31 g/cm³.
What is density?The density of a material is defined as its mass per unit volume. Although the Roman letter D can also be used, the most common symbol for density becomes. Mathematically, density is calculated by dividing weight by volume.
Density is frequently loosely defined as weight per unit volume, which is technically wrong; this quantity is actually more accurately characterized as specific weight. One example is the oil and gas industry in the United States.
Density= mass/volume.
mass= 21.93g
Volume= 49.3 - 46.3
= 3 cm³
Density = 21.93÷ 3
= 7.31 g/cm³
Therefore, 7.31 g/cm³ is the density.
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What does it mean to neutralize a chemical solution?
Answer:
A neutralized solution in chemistry refers to the reaction between an acid and base that results in a neutral balance, or a measure of 7 on the pH scale.
Explanation:
Ca(NO3)2 + HCl --> HNO3 + CaCl2
According to the reaction above, 55.0 grams of calcium nitrate react with excess hydrochloric acid to produce how many grams of caclium chloride?
please help from the first to last question?
Answer:
The hypothesis is that you are going to have lots of energy due to \you having the energy drink! so it would be "A" for the first question. For the 2nd question i would have to guess "B"! :) Number 3 wouldn't be "C" because it is a specified the theory, so it might be "A"! Number 4 would be "B" cause you do controlled experiments to prove your hypothesis to make a theory! Hypothesis are built off certain beliefs our guesses you think would happen so I believe it would be "D". Hopefully this helped and have a wonderful day!!
Consider the reaction H2(g) + I2(g) Double headed arrow. HI(g) with an equilibrium constant of 46.3 and a reaction quotient of 525. Which direction will the system shift to?
Answer:
The reaction shifts to the left.
Explanation:
Equilibrium constant (K) = 46.3
Reaction Quotient (Q) = 525
The relationship between Q and K with their implications are given as;
K = Q (No net reaction)
K > Q (Reaction shifts to the right)
K < Q (Reaction shifts to the left)
Since in this question, Q (525) > K (46.3)
The reaction shifts to the left.
A neutral atom contains eight protons, nine neutrons, and eight electrons. The atom must be
A. An oxygen isotope
B. a nitrogen isotope
C. a fluorine isotope
d. a neon isotope
Help!!!!!! i have not done science since December!!!!!!! _________ is the distance traveled during a specific unit of time.
Answer:
Velocity is the distance traveled during a specific unit of time
According to the Law of Conservation of Mass, how much water is produced if 22.5 g of
CHA react with 35.7g of Oz to form 48.9g of CO2?
CH4 + O2 + CO2 + H2O
o 107.1g
o 71.4g
o 62.1g
o 9.3g
8
9
10 11
12 13 14 15 16 17
Ne
Answer: The amount of water produced is 9.3 grams
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
[tex]CH_4+2O_2\rightarrow CO_2+2H_2O[/tex]
mass of reactants = mass of methane + mass of oxygen = 22.5 g + 35.7 g = 58.2 g
mass of products = mass of carbon dioxide + mass of water = 48.9 g + mass of water
48.9 g + mass of water = 58.2 g
mass of water = 9.3 g
Name the following compounds:
Answer:
why
Explanation:
why don't we need to answer, did you already found the answers
How much does a radish seed plant grows in 1 day?
Answer:
Sow the seeds 1/4- to 1/2-inch deep and 1 inch apart. Under ideal conditions, spring radish seeds will germinate within three to four days, but may take as long as 10 days.
Explanation:
Question 1
Balance the following chemical equation. __Li+___f2-->___LIF
Answer:
2Li + F2 → 2LiF
Explanation:
Hope this helps!
2. Describe two ways in which you could decide when an
acid has been completely neutralised by an insoluble
carbonate.
Answer:
search in chrome u will get your answer
Explanation:
Look at the dots around each symbol and the energy levels from the resources above;
Answer the questions in the text entry option for this assignment.
Copy and paste questions and respond in complete sentences.
Include a space between each question.
Be specific with your responses for each question. Assume your reader has no knowledge of the subject and you are teaching them via your answers.
Please answer the following questions:
Why does Na have only one dot?
Why do none of these diagrams show more than 8 dots?
What relationship do you notice between the dots in these two charts?
The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why? (Hint: Octet Rule (Links to an external site.))
Hello! Here's the answer I was able to come up with:
Why does Na have only one dot?
Sodium, or Na, has only one valence electron. (This makes the atom tend to participate in ionic bonding and "give" its single valence electron to an atom like chlorine.)
Why do none of these diagrams show more than 8 dots?
It is physically impossible for an atom to have more than 8 electrons in its valence layer, according to the Octet Rule.
What relationship do you notice between the dots in these two charts?
The dot diagram for each element represents the number of electrons each element will have in its outermost, or valence, shell. (2-8-8)
The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why?
An atom can have a maximum of two electrons in its innermost layer. Hydrogen and helium have only one and two electrons, respectively, so they don't have enough electrons to actually have more than one layer. Therefore, their outermost layer is, in fact, their only layer. This is why the number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table.
Don't copy this word for word! You will most likely be in trouble for plagiarism. Instead, rewrite these ideas in your own words, or paraphrase. Good luck, and I know you can do it! ♥
An ionic compound that conducts electricity is called an ______
Answer:
Electrolyte
hope it helps and your day will be full of happiness
Two plants growing close to one another are competing for resources. Which resource are they NOT likely to compete for? Choices A-Water B-Soil and nutrients C- Carbon dixoide
Answer: the resource which they are not likely to compete for is CARBONDIOXIDE. The correct option is C.
Explanation:
Competition may be defined as the a negative effect on plant growth which occurs when there is reduction in the availability of resources.
During the growth of plants, there are several resources that affects it's growth and maintenance. These resources include:
--> soil nutrients,
--> water,
--> carbondioxide and
--> sunlight
Since plants are autotrophs, that is, they manufacture their own food through the use of inorganic raw materials such as water and carbondioxide in the presence of sunlight, there may exist some level of competition for these resources when there is lack of space.
But plants are NOT likely to compete for carbondioxide because the atmospheric pool of carbondioxide is large and well mixed, therefore it won't be affected by lack of space between the two plants. Unlike the other main resources such as soil nutrients and water which are highly competed for and can determine the distribution of plants in an ecosystem.
You have two wires made of two different metals (metal A and metal B). Both wires are the same thickness and length. In one circuit, you use the metal A wire. In another identical circuit, you use the metal B wire. The metal A wire gets hot, while the metal B wire does not. Explain
Answer:
because metal A is not suitable for electric connection and metal B is suitable
A metallic wire is a cylindrical and flexible wire that carries electricity. Metal A wire gets hot as it is not suitable to conduct electricity.
What is a conductor?A conductor is a substance that can carry or pass the electricity and heat through it. The thickness and the length of the wire play a role in resistivity.
The metallic wire with good conductivity passes the electricity easily through it, while bad conductivity results in the release of heat through the wires making them lose energy.
Therefore, metal A wire gets hot.
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