Answer:
electrons/electron density
Explanation:
The branch of science that deals with electrons are called chemistry. An element consists of electrons, protons, and neutrons.
The correct answer to the question is electrons density.
What is an electron?The electron is a subatomic particle whose electric charge is negative one elementary charge. Electrons belong to the first generation of the lepton particle family and are generally thought to be elementary particles because they have no known components or substructure.In the cloud model, the electrons are revolving around the nucleus. In an atom when the electron's density is very high which represents a cloud.
Hence, the correct answer is electrons.
For more information about the electrons, refer to the link:-
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What is the mass of a dolphin swimming at 16 m/s with a momentum of 800 kg m/s?
Answer: 50 kg
Explanation: formula is
m= p/v
m=800 kg m/s : 16m/s
m= 50kg
idk tho hope this helps
Elements in the same _____ on the periodic table have the same number of valence electrons.
How many O's are in Al2(SO4)3 ?
Answer:
12 moles O
In one mole of aluminum sulfate, Al2(SO4)3 , there are 2 moles Al atoms, 3 moles sulfur atoms, and 12 moles O atoms
Explanation:
Answer:
1...
Explanation:
What is the noble gas configuration for Cobalt?
a
[Ar] 4s2 3d7
b
[Ar] 4s2 4d7
c
[Kr] 4s2 4d7
d
[Kr] 4s2 3d7
Answer:
a. [Ar] 4s2 3d7
Explanation:
what is a rule for determining the atomic mass of an atom or ion ?
Answer:
Mass = Number of neutrons + Atomic number (aka number of protons)
Explanation:
Which of the subatomic particles are responsible for the differences in isotopes?
Protons
Electrons
Atoms
Neutrons
Answer: Neutrons
Explanation:
Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.
Answer:
neutrons
Explanation:
isotopes has the same proton number but different nucleon number because there's different numbers of neutrons in isotopes
Plumbers often use a "dielectric union" joint to join pipes of different types. For example, copper pipes in a house might need to be joined with lead pipes in the main water supply. The dielectric union is a plastic joint that will not conduct electricity. Propose an explanation for why a copper pipe can't simply be welded directly to a lead pipe.
Answer:
a copper pipe can't simply be welded directly to a lead pipe because lead has a far lower melting point than copper and thus the lead will melt before the copper can even be effected.
Explanation:
A lead pipe is a pipe that's made of lead and is usually used in distribution of potable water to connect a water main source to a user's preferred area.
Now, a copper pipe can't simply be welded directly to a lead pipe because lead has a far lower melting point than copper and thus the lead will melt before the copper can even be effected.
Lead has a melting point of 327.5° C while copper wire has a melting point of 1082.778 °C
When a trumpet was played, a nearby sheet of paper began to move.
What caused the paper to move? *
Answer:
Air from the trumpet moved it
Explanation:
The circumference of the earth is 25,000 mi at the equator. What is the
circumference in km?
Answer:
40233.6
hope this helps
plz mark brainleist
Metals tend to have low ionization energies. What properties of elements in the metal groups do you think are the result of this tendency?
Answer:
Ionization Energy is defined as the energy required to remove the most loosely bonded atom from an atom in its gas phase. Ionization energy in metals decreases from top to bottom and from right to left and on the periodic table.
Metals have lower ionization energies that help metal atoms to lose electrons to nonmetal atoms easily. The metallic character of a metal increases as ionization energy decreases, it means reactivity of metals increases with decreases in ionization energy.
Hence, the reactivity of metals increases with low ionization energies..
The metals tend to have high reactivity due to low ionization energy.
The ionization energy can be defined as the energy required to remove the atom from metal in its gaseous state. The metals on the left side of the periodic table have loosely bonded electrons, requiring less ionization energy for the removal of an electron. Thus on moving from left to right in a periodic table, the ionization energy increases.
On moving from top to bottom in a periodic table, due to steric hindrance, the electrons are loosely bonded and require less energy for the removal of electrons. Thus on moving down the group, the ionization energy decreases.
The low ionization energy shows that there is easy removal of electrons tends to increase its reactivity.
Thus, low ionization energy results in the high reactivity of metals.
For more information about ionization energy, refer the link:
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Could someone please tell show me steps to solve this, I am so confused.
9.80 grams of magnesium metal react with excess hydrochloric acid, and 29.8 grams of magnesium chloride are produced
by the reaction. What is the percent yield of this reaction?
Mg + HCI –> MgCl2 + H2
And this is y I should of paid attention in that one science class in middle school that taught this...
(￣▽￣;)
describe 2 physical and 2 chemical changes involved in cooking
Please answer quick!!!
Answer: theres alot let me explain...
Explanation:
Protein denaturation is what makes eggs solidify, collagen break down and convert to gelatin in slow-cooked meat, fish and chicken become more opaque, and all meats firm up and change color. This is primarily achieved by applying heat, but can also occur in the presence of acidic and basic ingredients.
The Maillard reaction is the primary effect taking place in “browning”, and produces more flavor compounds, resulting in more complex flavors in food that we generally find enjoyable. It involves reaction between amino acids (proteins) and a certain class of sugars called reducing sugars — mostly the monosaccharides, such as glucose and fructose.
Caramelization is a secondary browning effect that occurs in foods with sugar content, even though all browning is often referred to as “caramelizing”. It mostly takes place at higher temperatures than Maillard reaction (with the notable exception of fructose).
Pyrolysis, or thermal decomposition (chemical breakdown) begins at higher temperatures. While caramelization is technically in this category, the main effect of this reaction is carbonization. This is what we generally mean when we talk about “burning” food, even though no combustion has taken place. It’s also what happens when we cause oil to smoke and darken. In small, controlled amounts, this can still provide desirable flavors, such as char on the outside of meat and contributing to “wok hei” in stir frying — the latter of which does involve some combustion.
Acid-base reactions produce carbon dioxide, which creates the rise in quick breads such as biscuits. These often occur at room temperature, but some also don’t occur until higher temperatures — which is how “double-acting” baking powder works.
Gluten formation occurs when you mix flour and water, resulting in stretchy doughs and fluffy baked goods. This occurs easily at room temperature.
A car travels 100 m while decelerating to 8 m/s in 5 s.
initial speed is 32
b) What was it's acceleration?
List 3 problems that can be solved with magnets
Answer:
- Failed internal wiring
- reaching a hard to get metal item
- keeping a item on a metal surface
Explanation:
Please give me BRAINLIEST :))
period 6, group 12 (2B)
Answer:
mercury or Hg
Explanation:
i looked at the periodic table haha
hope this helps and is right <3
What is the movement of particles in gas?
Answer:
The movement is random
Explanation:
Glucose is an example of which Carbon-based macromolecule?
proteins
carbohydrates
lipids
nucleic acids
Answer:
Monosaccharides are the most basic units of carbohydrates. These are simple sugars, including glucose, fructose, and others. They contain between three and seven carbon atoms, have a sweet taste and are used by the body for energy.
which object would require the most amount of energy, or force, to set it to motion?
a. school bus
b. refrigerator
c. microwave
d. houseplant
KNO, + H.CO, – K. CO, + HNO
Answer:
Just Try ur best ok
Explanation:
Find the speed of the ATV that goes 60 miles in 2 hours._______________________ m/hr
Given parameters:
Distance of ATV = 60miles
Time = 2hrs
Unknown:
Speed = ?
Solution:
Speed is a scalar quantity. It has magnitude but no direction. Mathematically, speed is distance divided by time.
Speed = [tex]\frac{distance}{time}[/tex]
Input the parameters;
Speed = [tex]\frac{60}{2}[/tex] = 30miles/hr
The speed of the ATV is 30miles/hr
What happens immediatesly after you dissolve acid in water? Positively charged hydrogen atoms are released. Positively charged hydrogen atoms are released. Negatively charged hydrogen atoms are released. Negatively charged hydrogen atoms are released. Hydronium ions are released. Hydronium ions are released. Neutrally charged hydrogen atoms are released. Neutrally charged hydrogen atoms are released.
Answer:
The correct answer is A.
Explanation:
The acids with hydrogen atoms in them are the ones that dissolve best in water and when they do, they get diluted, raising their pH level by releasing hydrogen ions (H+) into the solutions.
So when acids get dissolved in water, positively charged hydrogen atoms are released.
The answer is A.
I hope this helps.
On a mountain in the spring, snow melts and flows into a creek. Then the creek flows into a river, which eventually flows into the ocean.
1. Which part of the water cycle is this an example?
2. What forces cases the water to flow drown hill?
Answer:
I'm sorry but I need points
Water and salt are compounds made of the combination of more than one type of atom. Which statement is false?
A. Because they they are are compounds, compounds, they they cannot cannot be be pure pure substances.
B. Both compounds compounds are are considered considered pure pure substances.
C. These compounds compounds have have specific specific physical physical properties properties that that never never change.
D. These compounds compounds have have distinct distinct chemical chemical properties.
Compounds are made of the various elemental atoms joined together. Water and salt are compounds that can be present in their pure form. Thus, option A is false.
What are compounds and pure substances?A compound is a substance formed by the bond between the atoms of the elements that shares, transfers, donates, or gains electrons to join and interlink chemically.
The pure substance is characterized by the presence of only a single type atom of the element. They have invariability and can exist in various phases with constant composition.
Water and salt are compounds made of two or more atoms of different elements that have specific physical properties and distinct chemical properties.
Therefore, option A. the compounds cannot be pure substances is false.
Learn more about pure substance here:
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How many grams of calcium nitrate, Ca(NO3)2 (molecular weight 164), contains 24 grams of oxygen atoms?
a
41 g
b
96 g
c
62 g
d
164 g
what is the diference between weather. and climate
Answer:Whereas weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area. Different regions can have different climates. ... Weather tells you what to wear each day. Climate tells you what types of clothes to have in your closet.
Explanation:well bc i am in 10th grade this kinda easy lol hoped i helped
Answer:
Explanation:
Weather is the current state of weather while, climate is the most common weather of that region over a time of 30 years.
Read the following excerpt and answer the question:
Scientists often refer to mushrooms as the "dark matter of biology" because we don't know much about them. Mushrooms are not plants
because they have no chlorophyll and cannot make their own food. They are actually fungi and absorb nutrients from their surrounding
environments, and they can even thrive at the bottom of the ocean or in the middle of a desert!
Use your own words to summarize why mushrooms and plants differ in their needs to use radiant energy from the sun.
Answer:
\/
Explanation:
Plants rely directly on the energy from the sun. The chloroplast create glucose from the sun rays through a process known as photosynthesis. Mushrooms, on the other hand, do not have the ability to use the sun's rays to create food, so they instead gather their energy from the nutrients from the soil or decaying things, such as plants, that once used the sun's radiation as sustenance. So basically mushrooms use the radiant energy from the sun indirectly and plants use it directly
How is heat transferred when a person steps on hot sand?
O A. From the sand to the feet
O B. In both directions between the sand and the feet
C. From the feet to the sand
O D. Heat is not transferred.
Answer:
Explanation:
Heat moves from hot sand to the bottoms of your feet by conduction. Conduction is the transfer of heat between objects that touch each other.
Heat moves from hot sand to the bottoms of your feet by conduction.Hence Option (A) is correct.
What is Conduction ?Heat conduction is a phenomenon that occurs through the interaction of neighbouring atoms and molecules, transferring their energy/heat (partially) to their neighbours.
This is the most significant means of heat transfer within a solid and between solid objects in thermal contact.
Conduction is the transfer of heat between objects that touch each other.
Therefore, Heat moves from hot sand to the bottoms of your feet by conduction.Hence Option (A) is correct.
Learn more about Conduction here ;
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What are the characteristics of metals vs. non metals?
Answer:In the picture
Explanation: None
How many elements are present in the compound?
Mg2As3COHNi2
Answer: 6
Explanation: none needed lol
1. Clouds form when water changes from a
A gas to liquid .
B liquid to gas.
C solid to gas
D solid to liquid.
Answer:
A. Gas to liquidExplanation:
I think the answer is A. gas to liquid. This is the correct answer... If you like this answer mark this answer as BRAINLIEST answer..Thank you ☺️☺️
