Answer:
The correct answer is - They gently shake the pan causing the marbles to move back and forth.
Explanation:
When water is heated the molecules present in its liquid state start to move and vibrate faster and allows the water to expand and increase in volume. If the heat is continuously applied to the water its molecules move even faster and escape in the form of molecules of vapor to the atmosphere.
To exhibit this phenomenon by the marble and pan, Richard and Brooke should gently shake the pan causing the marbles to move back and forth which shows faster vibration and movement of molecules.
The excess reactant... a. provides more product in the reaction b. is left over, after the reaction is complete c. has the highest coefficient in every balanced reaction d. is the gas in a balanced reaction
50 POINTS HELP
Answer:
[tex]\boxed {\boxed {\sf Option: B }}[/tex]
Explanation:
The excess reactant is the reactant left over after a chemical reaction. It is found when the limiting reactant is completely done. The answer to your question is option B. The excess reactant is what is found after the reaction is complete. Our answer is Option B.
Answer:B
Explanation: Excess Reactant - The reactant in a chemical reaction that remains when a reaction stops when the limiting reactant is completely consumed consumed. The excess reactant remains because there is nothing with which it can react.
What else is produced during the combustion of butane, C4H10?
2C4H10 + 13O2 8________ + 10H2O
H2O
C4H10
CO2
O2
Another product: CO₂
Further explanationGiven
Reaction
2C₄H₁₀ + 13O₂⇒ 8__+ 10H₂O
Required
product compound
Solution
In the combustion of hydrocarbons there can be 2 kinds of products
If there is excess Oxygen, you will get Carbon dioxide(CO₂) and water in the product
If Oxygen is low, you'll get Carbon monoxide(CO) and water
Or in other ways, we can use the principle of the law of conservation of mass which is also related to the number of atoms in the reactants and in the products
if we look at the reaction above, there are C atoms on the left (reactants), so that in the product there will also be C atoms with the same number of C atoms on the left
2C₄H₁₀ + 13O₂⇒ 8CO₂+ 10H₂O
Answer:
is C. CO2
Explanation:
how can I change an experiment to a field work
Answer:
You apply the experiment in real life
Explanation:
if im thinking about how im gonna make a big kaboom explosion, I crash the plane and it makes a big kaboom explosion in the real field
make a website and then hire other people and show them the expirment
Electronic configuration of first 20 elements
Explanation:
Electronic Configuration of First 30 Elements with Atomic Numbers
Atomic Number Name of the Element Electronic Configuration
18 Argon (Ar) [Ne] 3s2 3p6
19 Potassium (K) [Ar] 4s1
20 Calcium (Ca) [Ar] 4s2
21 Scandium (Sc) [Ar] 3d1 4s2
26 more rows
Explanation:
NUMBER ELEMENT ELECTRON CONFIGURATION
1 Hydrogen 1s1
2 Helium 1s2
3 Lithium [He]2s1
4 Beryllium [He]2s2
5 Boron [He]2s22p1
6 Carbon [He]2s22p2
7 Nitrogen [He]2s22p3
8 Oxygen [He]2s22p4
9 Fluorine [He]2s22p5
10 Neon [He]2s22p6
11 Sodium [Ne]3s1
12 Magnesium [Ne]3s2
13 Aluminum [Ne]3s23p1
14 Silicon [Ne]3s23p2
15 Phosphorus [Ne]3s23p3
16 Sulfur [Ne]3s23p4
17 Chlorine [Ne]3s23p5
18 Argon [Ne]3s23p6
19 Potassium [Ar]4s1
20 Calcium [Ar]4s2
The volume of a sample gas is 650.ML at 0.00C. What volume will the sample occupy at 75C?
Answer: 828.57mL
Explanation:
First and foremost, we need to convert the degree in Celcius to Kelvin, this will be C + 273 = K
Temperature 1 = 0 + 273 = 273K.
Temperature 2 = 75 + 273 = 348K.
We then plug the values gotten into.the formula which will give:
650/273 = x/348
X = (650 × 348) / 273
X = 828.57mL
The volume that the sample will occupy at 75C would be 828.57mL.
Decipher this puzzle
SECRET
SECRET
SECRET
Answer:
Top secret
Explanation:
Top secret because it is circling the word secret on the stack of three so its the secret on the top. It's a play on words or words riddle.
Consider the above reaction. If some CO2 were removed from the container, what would the reaction do in an attempt to replace the CO2?
Answer:
See explanation
Explanation:
The reaction to be considered is shown below;
H2CO3<------->CO2 + H2O
We know that when a constraint such as a sudden change in concentration, pressure or temperature is imposed on a reaction system in equilibrium, the system has to adjust itself by shifting in a particular direction in order to cancel the constraint.
Now, if we remove CO2, the equilibrium position must shift to the right by the decomposition of more H2CO3 to establish equilibrium again.
Explain the purpose and function of a gene.
Function
Genes decide almost everything about a living being. One or more genes can affect a specific trait. Genes may interact with an individual’s environment too and change what the gene makes.
Genes affect hundreds of internal and external factors, such as whether a person will get a particular color of eyes or what diseases they may develop.
Some diseases, such as sickle-cell anemia and Huntington’s disease, are inherited, and these are also affected by genes.
Purpose
The purpose of genes is to store information.
Each gene contains the information required to build specific proteins needed in an organism.
Hope this helps !!
_AL +
_Br2 —>
_AlBr3
Answer 2, 3, 2
Explanation:
The weak interactions between atoms that keep atoms near each other but don't tightly bind them together are called
Answer:
Cohesive and adhesive forces.
further, we also have vander waal's forces of attraction
What does the nucleus of the atom contain?
A. protons and electrons
B. protons and neutrons
C. neutrons and electrons
Answer:
I believe the answer is B
please help me I will give brainesty if your right
Answer:
Sunlight
Explanation:
My science teacher has told us that plants need the sun to photosynthesis. And even though their is a lot of sun, they need to compete for it still.
could someone please tell me how many subatomic particles are in the element phosphorus?
Which pair of elements form in a conic bond with each other
I think you mean ionic bond and not conic bond. The pair of elements that form an ionic bond are barium and chlorine.
3.Write the chemical equation for the reaction when methane burns in (2) (a) Sufficient supply of oxygen (b) Insufficient supply of oxygen
Answer:
the answer is god
Explanation:
because god created everything therefore hes the answer to everything
Answer:
(a) CH₄ + 2O₂ ----> CO₂ + 2H₂O
(b) 2CH₄ + 3O₂ ----> 2CO + 4H₂O
Explanation:
The burning of methane in an insufficient supply of air leads to incomplete combustion releasing carbon monoxide which is extremely poisonous and cause death.
When methane burnt in air or oxygen, it produces large amounts of heat, together with carbon dioxide and water vapour
Can someone please walk me through this?-- 25 pts!
Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the following reactions:
Reaction 1: N2 (g) + 3H2 (g) --> 2NH3 (g); Change in enthalpy: -91.8 kJ/mol
Reaction 2: C (s, graphite) + 2H2 (g) --> CH4 (g); Change in enthalply: -74.9 kJ/mol
Reaction 3: H2 (g) + 2C (s, graphite) + N2 (g) --> 2HCN (g); Change in enthalpy: +270.3 kJ/mol
I have to include the following:
The numerical answer with correct units.
State which reactions, if any, you had to "Flip".
State which reactions you had to multiply, if any, to get the correct amount of the compound. Also, include how much you multiplied the reaction by.
NH3(g) + CH4(g) ⇒ HCN + 3H2 ∆ H:255.95 kJ/mol
Further explanationGiven
Reaction and the enthalpy
Required
The change of enthalpy
Solution
Reaction 1
N2 (g) + 3H2 (g) --> 2NH3 ∆ H: -91.8 kJ/mol⇒reverse
2NH3 ⇒ N2 (g) + 3H2 (g) ∆ H: +91.8 kJ/mol
Reaction 2
C (s, graphite) + 2H2 (g)⇒ CH4 (g) ∆H: -74.9 kJ/mol ⇒reverse
CH4 (g) ⇒ C (s, graphite) + 2H2 (g) ∆H: +74.9 kJ/mol ⇒ x2
2CH4 (g) ⇒ 2C (s, graphite) + 4H2 (g) ∆H: +149.8 kJ/mo
Reaction 3
H2 (g) + 2C (s, graphite) + N2 (g) ⇒ 2HCN (g);∆ H: +270.3 kJ/mol
Add up all the reactions and remove the same compound from different sides :
2NH3 ⇒ N2 (g) + 3H2 (g) ∆ H: +91.8 kJ/mol
2CH4 (g) ⇒ 2C (s, graphite) + 4H2 (g) ∆H: +149.8 kJ/mol
H2 (g) + 2C (s, graphite) + N2 (g) ⇒ 2HCN (g) ∆ H: +270.3 kJ/mol
-----------------------------------------------------------------------------------------
2NH3(g) + 2CH4(g) ⇒ 2HCN + 6H2 ∆ H: 511.9 ⇒ :2
NH3(g) + CH4(g) ⇒ HCN + 3H2 ∆H:255.95
Explain how the periodic table is organized. Include the following in your response: What is the relationship between elements in the same group? How does an element's location on the periodic table relate to its reactivity? Describe the properties of the following families of elements: Hydrogen, Alkali Metals, Alkaline Earth Metals, Halogens, and Noble Gases.
Answer:
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Periodic table
chemistry
WRITTEN BY
J.J. Lagowski See All Contributors
Professor of Chemistry, University of Texas at Austin. Author of The Chemical Bond.
See Article History
Alternative Title: periodic table of the elements
Study chemistry's periodic law to understand elements' properties and how they relate to one another
Study chemistry's periodic law to understand elements' properties and how they relate to one another
Explanation of the periodic table.
Encyclopædia Britannica, Inc.
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Periodic table, in full periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus. When the chemical elements are thus arranged, there is a recurring pattern called the “periodic law” in their properties, in which elements in the same column (group) have similar properties. The initial discovery, which was made by Dmitry I. Mendeleyev in the mid-19th century, has been of inestimable value in the development of chemistry.
periodic table
Explanation:
need thanks and make me brainiest if it helps you
Both covalent-network solids and ionic solids can have melting points well in excess of room temperature, and both can be poor conductors of electricity in their pure form. However, in other ways their properties are quite different. a. Which type of solid is more likely to dissolve in water
Answer:
IonicEvidence: It can be proved by a simple experiment, sand doesn't dissolve in water but NaCl (table salt) does. (excluding cases like BaSO4 and sugar and amino acids)Cause: The electrostatic bonds among ions in a lattice only hold them together like two magnets with unlike poles facing each other. The water molecules can split them through the similar process with several molecules ganging up on them, the H+ parts of the molecules attracts the anion and O2- part; the cations. If this electrostatic attraction is big enough, the bonds between the solid's ions break (into separate ions). And so the solid dissolves. This is usually the case with most.
Why not covalent structures?: Sure, covalent solids have a low m.p and b.p for low intermolecular forces, the covalent bonds here are strong and cannot easily be 'pulled apart' by water molecules. They usually have stronger intermolecular forces than that of water.
But... if their intermolecular forces are weaker or similar, sure they can dissolve easily. Like any often-used alcohol (glacial).
Earth's southern hemisphere generally experiences colder temperatures in
July than it does in January. Which statement explains why?
O A. The southern hemisphere is tilted away from the Sun in January.
O B. Sunlight strikes the southern hemisphere at a more direct angle in
July.
O C. The Sun produces more energy in June, July, and August than it
does in December, January, and February.
D. Sunlight in the southern hemisphere is more spread out in July.
Answer:
A
Explanation:
aluminium is obtained industrially by the electrolysis of aluminium oxide heated to high temperatures.
the positive electrodes used in electrolysis of aluminium oxide are made of carbon
these electrodes slowly disappear over time as they are converted to a gas
suggest the identity of this gas
Answer:
Explanation:
????? i am having trouble according this
You have one mole of a diatomic gas.
Which statement is true?
You have six times the number of particles that are in 12 grams of carbon-12.
You have three times the number of particles as in 12 grams of carbon-12.
You have the same number of particles that are in 12 grams of carbon-12.
You have one-third the number of particles that are in 12 grams of carbon-12.
Answer: You have three times the number of particles as in 12 grams of carbon-12. (B)
what is a formula for sodium nitrate
Answer:
NaNO3
Explanation:
sodium= Na
Nitrogen= N
and there's 3 oxygens = O3
What is the slowest type of mass movement?
Answer:
Creep
Creep is the slowest of all the mass movements and moves the most soil out of all the mass movements. The only way to detect soil creep is to observe the fences, buildings, and other surface objects that may be in that area. As the loosened soil moves slowly downslope, these objects will move along with the soil.
Explanation:
1. What causes potential energy to change within a system?
2. How does the location of an energy generation source affect the available potential energy?
Answer:
I don't know what you mean by that I just wanted to ask you this: who do u support? Biden or Trump?
Explanation:
Thank you if you answered my question!
What gas makes up the majority of the Earth's atmosphere?
Answer:
Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N 2) and about 21% oxygen (O 2).
In short, Nitrogen
The diagram below shows a boy with his positions above the trampoline
Which best describes the energy the boy has at position 3 just before gravity begins to pull him back down?
A)applied
B)Kinetic
C)Mechanical
D)potential
Answer:
Ur answer is c I think
Explanation:
true of false? After Vincennes was recaptured by the British,
George Rogers Clark captured it again in a
surprise attack.
if it’s false give an explanation why
Answer:
False
Explanation:
Answer:Terms in this set (17)
T/F Mohawk war chief Joseph Brant was one of the few Native Americans who sided with the Patriots. ... After George Rogers Clark captured Vincennes, it remained in Patriot control. True. After Vincennes was recaptured by the British, George Rogers Clark captured it again in a surprise attack.
Explanation:
How many formula units are in 4.56 moles of LiCl?
Answer:
In 4.56 moles of LiCl 27.46*10^23 formula units is present.
Explanation:
Formula units is defined as the empirical formula for any ionic, covalent and network solid compounds which are used as a single unit for stoichiometric calculations. Also It can be defined as the lowest whole number ratio of ions which can be represented in an ionic compound.
We are given
4.65 moles of Lithium chloride.
One mole of Lithium chloride has 6.022*10^23 unit Formula unit
In 4.56 moles of Lithium Chloride the formula unit will be
= 4.56*6.022*10^23
Formula units = 27.46 * 10^23
It is clear that in 4.56 moles of Lithium Chloride will contain 27.46*10^23 Formula unit.
Therefore in 4.56 moles of LiCl 27.46*10^23 formula units is present.
What is the mass of 2.486 * 10^{24} atoms of neon?
Select one:
a)83.33 g Ne
b)0.2046 g Ne
c)8.333 g Ne
d) 4.130 g Ne
Answer:
The answer is A 83.33 g Ne
Explanation:
Used Avogadros Law
A satellite image can help scientists locate the area where two plates have diverged by showing the existence of
A. grassy plains
B. Mountains
C. plateaus
D. rift valleys
I need it now while I'm in class
Answer:
D
Explanation:
Because it's d so yeah
The satellite image where the scientists locate the area by representing the existence of rift valleys.
What is rift valleys?A rift valley refers to the lowland region where it created at the time when there should be tectonic plates of the earth that should be moved apart or rifted. A rift valley should be lowland region that should be created at the time when earth tectonic plates should be moving part. It should be founded both on the land and at the bottom of the ocean.
Therefore, we can conclude that the option d is correct.
Learn more about area here: https://brainly.com/question/16660726