Answer:
Does a magnet attract the element?
Explanation:
This is because, the attraction of an element by a magnet is a purely physical property. It has to do with the orientation of the electrons in the element. It does not tell us of the composition of the element or how it reacts with other elements. Whereas, the other questions deal with the chemical properties of the element. That is, how it reacts with other elements or substances.
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what type of element is [Xe] 4f5
Answer: element symbol: Eu. Element Atomic Number: 63.
Europium
Europium (Eu), chemical element, a rare-earth metal of the lanthanide series of the periodic table.
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___ manifested as instantaneous charge difference is due to molecular interactions
Answer:
Dispersion forces are manifested as instantaneous charge differences due to molecular interactions
Explanation:
A student made lemon drop candy by melting sugar, water, and lemon flavoring in a sauce pan until the mixture was at a very high temperature. Next, the student poured the clear yellow mixture onto a baking sheet until it was cool. The process of making lemon drop candy is most like the formation of what type of rock? Igneous Igneous Metamorphic Metamorphic Sedimentary Sedimentary Conglomerate Conglomerate
Answer:
The answer is "Igneous".
Explanation:
Igneous rock (or magmatic rock) is one of the 3 main forms of stone, the other metamorphic and sedimentary, derived from Latin "ignis", which denotes flame, which is formed through magma or lava melting and reasserting.
This hardening of liquid-solid rock shapes the inglorious rock. Its diabasic, peridotite, gabs, quartz, pegmatites, or peridotite are examples of intrusive igneous rocks. Exceptional ignorant stones burst mostly on the surface, cooling fast and forming small crystals.
Can someone please help me with number 10
How did conservatism affect the nationalist movements in Europe?
A.
It promoted the overthrow of absolute monarchies.
B.
It forced nationalist leaders to adopt socialism.
C.
It delayed or extended nationalist struggles.
D.
It emphasized the rights of individuals over nations.
Answer:
The answer is C. (It delayed or extended nationalist struggles.)
Explanation:
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If a pea plant is hybrid for height, this means that
a) It has one dominant and one recessive allele
b) it has two of the same allele
PLSSSS HELP ASAP!!
Answer:
A
Explanation:
By nature, a hybrid has one dominante allele and one recessive allele
What THREE organisms use photosynthesis?
Answer:
Plants, bacteria, and algae
Explanation: Plants are known to gather food from the sun, algae is a type of plant, and bacteria gather food from the sun while they are in the air.
what is universal indicator solution used for
what causes a mountains to change in height or location
Movement of tectonic plates, erosion, earthquakes, and landslides, etc causes a mountains to change in height or location.
Some mountains might change due to the volcanic activities. Erosion occurs due to the rain and wind and primary reason for landslides to happen is flooding. When earth's crust presses against each other, the crust collects up to form the mountains. When erosion occurs, it erodes down the mountains and decreases their height making them shorter and less steep.The height and location of mountains change due to the movement of tectonic plates. When these tectonic plates shows movement, the height of mountains gradually increases and these plates produces high elevations resulting in the expansion of mountains. As much as the plates collide with each other, mountains will get taller and taller.The tectonic plates continuously moves slowly, but due to the friction, they stuck at the edge. These plates move away from each other and cause mild shocks of earthquake, or they move towards each other resulting in collision. This collision is very destructive. It brings down a mountain, resulting in gradual decrease of height of mountains.To learn more about mountains,
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MULTIPLE CHOICE QUESTION
In an ionic bond, metals will
Gain electrons to form positive ions
Lose electrons to form positive ions
Gain electrons to form negative ions
Lose electrons to from negative ions
Answer:
B) Lose electrons to form positive ions
Explanation:
Solid Silicon can be reacted with Nitrogen gas at a high temperature to form silicon nitride (Si3N4).
1.20 moles of Silicon are added to 1.00 moles of Nitrogen gas.
(5 Points) Balance the equation and indicate the phases.
Si (___) + N2 (___) → Si3N4 (___)
(5 Points) What is the limiting reactant? You must show your work.
Define these three words in your own words. will also give brainliest.
1.air resistance
2.Data
3.Magnetism
Answer:
Translation: Air resistance is a force that is caused by air. The force acts in the opposite direction to an object moving through the air.
Data are characteristics or information, usually numerical, that are collected through observation. In a more technical sense, data are a set of values of qualitative or quantitative variables about one or more persons or objects, while a datum (singular of data) is a single value of a single variable.
a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.
what is reduction potential?
a. a measure of ionization energy of an element
b. a measure of the electronegativity of an element
c. a measure of the ability of the substance to be reduced
d.a measure of the oxidation state of an element
Reduction potential is a measure of the ability of a substance to be reduced
What is reduction potential?Reduction potential (Eo) can simply be defined as as that tendency of a chemical species or a substance to be reduced by gaining an electron.
Generally, the reduction potential of any chemical species can be determined by subtracting the standard reduction potential for the reaction occurring at the anode from the standard reduction potential for the reaction occurring at the cathode.
So therefore, reduction potential is a measure of the ability of a substance to be reduced
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Answer: c. a measure of the ability of the substance to be reduced
Explanation:
Question 2
1 pts
Because transition metals have more than one stable oxidation state their charges
Answer:
Transition metals can have multiple oxidation states because of their electrons. The transition metals have several electrons with similar energies, so one or all of them can be removed, depending the circumstances. When they attach to other atoms, some of their electrons change energy levels.
Explanation:
What does the following nuclear symbol reveal about the particle?
Answer:
Photo?
Explanation:
ASAP please and Thankyou
Answer:
c
Explanation:
There are four boxes so each are 25%.
Red = 25%
Red and White = 50%
White = 25%
CO
O 2
NaCl
H 2
MgO
N 2
Cl 2
K 2 O
LiF
CaO
How many of the above contain ionic bonding in them. Write their formulas below. Write one major
reason that how do you come to know that your given answers contain ionic bonding in them
Answer:
1) The number of the listed compounds that have ionic bonds between them are 5 compounds
2) Their formulas showing their charges within the compounds are;
NaCl ↔ Na⁺+Cl⁻
MgO ↔ Mg²⁺+O²⁻
K₂O ↔ 2K⁺+O²⁻
LiF ↔Li⁺+F⁻
CaO ↔ Ca⁺+O²⁻
3) The major reason they were selected is because they are compounds formed by the combination of a metal and a nonmetal
Explanation:
1) An ionic bond involves the transfer of an atoms valence to another atom, such that the ions formed by the ionic chemical bond will be oppositely charged
Therefore, metals, which are elements that mainly have a few electrons in their outermost shell, loses their valence electrons and become positively charged, while non metals, which require a few electrons to complete the stable octet electronic configuration, receive the electrons from the metallic atoms and become negatively charged
Therefore, the compounds formed between a metal and a nonmetal in the list are the the compounds containing ionic bonds, including
NaCl, MgO, K₂O, LiF, and CaO
Therefore, 5 compounds contain ionic bonds between them;
2) Their formulas are;
NaCl, MgO, K₂O, LiF, and CaO
3) The major reason that the chosen compounds contain ionic bonding between them is because they involve the combination of a metal and a nonmetal as follows;
a) NaCl → Na⁺ (metal ion) + Cl⁻(nonmetal ion)
b) MgO → Mg²⁺ (metal ion) + O²⁻(nonmetal ion)
c) K₂O → 2K⁺ (metal ion) + O²⁻(nonmetal ion)
d) LiF → Li⁺ (metal ion) + F⁻(nonmetal ion)
e) CaO → Ca⁺ (metal ion) + O²⁻(nonmetal ion)
before the quarry was dug, the land contained more vegetation . what impact has this change most likely had on the local ecosystem
ionic bonding occurs when ______ atom donates one or more _______ to a _______ atom
Answer:
ionic bonding occurs when unstable atoms donates one or more valence electrons to a unstable atom
Explanation:
An aqueous solution of potassium iodide turns from colourless to brown.
What happens to the iodide ions?
A.)lodide ions are oxidised due to gain of electrons
B.)lodide ions are oxidised due to loss of electrons.
C.)lodide ions are reduced due to loss of electrons.
D.)lodide ions are reduced due to gain of electrons.
Answer:B
Explanation:
It’s pretty obvious lol
Classify the following as a solution, suspension or colloid
(a) Brine
(b) milk
(c) sand and water
(d) soda
(e) air
(f) smoke
(g) chalk and water
Answer:
Solution - (a) Brine . Suspension - (c) sand and water, (g) chalk and water Colloid - (e) air, (f) smoke , (d) soda , (b) milk
Explanation:
A solution is an homogeneous mixture of two or more compounds.
A suspension is a heterogeneous mixture of two or more compounds while a colloid is a homogeneous mixture of two or more compounds with suspended particles which do not settle.
So, under these definitions, the classifications are as follows-
Solution - (a) Brine .
Suspension - (c) sand and water, (g) chalk and water
Colloid - (e) air, (f) smoke , (d) soda , (b) milk
If 6 grams of a hydrocarbon gas have a volume of
4.8 cubic decimeter, what would be the
approximate molecular mass of this gas?
A 30 grams
B 40 grams
C 20 grams
D 48 grams
Answer:
30 grams
Explanation:
I got 40 wrong so I picked 30
Answer:
30 grams
Explanation:
I did the ck12
Choose all the answers that apply.
The elements in group 18 _____.
are highly reactive
are gases at room temperature
usually do not react with other elements
are in a group called the noble gases
are nonmetals
Answer:
are gases at room temperature
usually do not react with other elements
are in a group called the noble gases
are nonmetals
Explanation:
The elements in group 18 or group O are the inert elements. They have completely outermost shell and are not reactive. Every atom reacts with another in order to be like the noble gases.
All of the elements here are gaseous. They do not readily react with other elements. They are called noble gases, inert gases, or group O elements.It should be noted that group 17 elements are very reactive compared to the group O elements.
HELP ASAP 20 POINTS AAAA
Please help. write a paragraph using eight (8) of these terms.
observation
hypothesis
theory
matter
agent
experimental group
control group
temperature
particle
criteria
Answer:
Me and my friends were going to do a science experiment. Jonny’s job was to make the HYPOTHESIS. He said the “ If we mix baking soda and vinegar together, the TEMPERATURE will go down.”
So then Molly mixed the baking soda and vinegar together and checked the TEMPERATURE. We all OBSERVED as the thermometer’s TEMPERATURE went down. “ your THEORY/ HYPOTHESIS was correct!” Exclaimed Molly.
Then the whole science GROUP let out with a cheer! And wrote the information down on their EXPERIMENTAL info chart. They took a microscope and looked at the mixture because they wanted to the the little PARTICLES in the mixture. Lily CONTROLED the microscope she zoomed in and out to see the particles.
Explanation:
i hope this helps:)
Describe the Electromagnetic spectrum. Which waves have most/least energy? List the colors in the visible spectrum from weakest to strongest.
If a 250 ml solution of ethanol in water is prepared with 4 mL of absolute ethanol, what will be the concentration of ethanol in %v/v?
The concentration in volume-volume percent of the solution is: 1.6 %
To solve this problem the formula and the procedure that we have to use is:
% v/v = v(solute)/v(solution) * 100
Where
% v/v = concentration in volume percentv(solute) = volume of solutev(solution)= volume of solutionInformation about the problem:
v(solute)= 4 mlv(solution)= 250 ml% v/v =?Applying the concentration formula we get:
% v/v = v(solute)/v(solution) * 100
% v/v = (4 ml/250 ml) * 100
% v/v = 0.016 *100
% v/v =1.6 %
What is a solution?In chemistry a solution is known as a homogeneous mixture of two or more components called:
SolventSoluteLearn more about chemical solution at: brainly.com/question/13182946 and brainly.com/question/25326161
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What is the difference in actual yield and theoretical yield?
Answer: Theoretical yield Is what you expect stoichiometrically from a chemical reaction; actual yield is what you actually get from a chemical reaction
Explanation:
When a reaction happens we can have two yields
TheoreticalActualTheoretical is proved before or stochiometrically tested multiple times and stored as theory which we expect
Actual yields is that which we get actually from our reaction
What would happen if Jupiter gravitational pull was increased or reduced?
Answer:
Jupiter would have the strongest gravitational pull on a satellite.
Gravity is directly proportional to mass.
Jupiter is the most massive, so it will have a stronger gravitational pull.
Explanation:
5. How many moles of calcium atoms are in each mole of calcium carbonate? (1 point)
Answer:
One mole of calcium is present in one mole of calcium carbonate
Explanation:
Because its formula is CaCO3
Ca contains 2+ charge and CO3 contains 2- charge