Answer:
The smallest atom you have listed would be lithium (Li).
Explanation:
Lithium is the third smallest atom listed on the periodic table of the elements. It has an atomic number of three, meaning it has three protons in it's nucleus.
Atom size (Atomic radius) increases from UP to DOWN in the same COLUMN(group) of the periodic table. For example, in the first group, the Atomic radius trend from smallest to greatest is: H (smallest) -- Li -- Na -- K -- Rb -- Cs -- Fr (greatest).
Reason is, the increasing energy level (increases from n=1 to n=7) causes the shielding effect increase dramatically. And since the size of atom is mostly consist of electrons, more energy level is filled, the larger the atom will be.)
However, in the same ROW from left to right, the atomic size decreases as the number increases. For example, Li #3, is larger than Flourine (F) with an atomic number 9 because they are on the same ROW.
Describe how innate behaviors and learned behaviors differ? If you tell me the answer i will give you a brainliest answer :)
Answer:
The difference between an innate behavior and a learned one is that innate behaviors are those an animal will engage in from birth without any intervention. Learned behavior is something an animal discovers through trial, error and observation.
Explanation:
CuSO4 +
KI →
Cul +
12 +
K2SO4
CAN SOMEONE PLZ HELP ME ON THIS
Answer:
Q1. C
Q2.ring number 1 is 2
ring number 2 is 8 and
ring number 3 is 18
Q3. p can contain 6 electrons max
and d can contain 10 electrons max
Q4. D
What is the density of an
object that has a mass of
120 g and volume of 5 ml?
The density of an object ρ = 24 g/ml
Further explanationGiven
mass of an object = 120 g
volume = 5 ml
Required
The density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Input the value :
ρ = 120 g : 5 ml
ρ = 24 g/ml
Please answer this question please brianlest
How many grams of Na2SO4 can be produced from 423.67 g of NaCl?
Mass of Na2SO4= 514.18 grams
Further explanationGiven
423.67 g of NaCl
Required
mass of Na2SO4
Solution
Reaction
2NaCl + H2SO4 → Na2SO4 + 2HCl
mol NaCl :
= 423.67 g : 58.5 g/mol
= 7.24
From the equation, mol Na2SO4 :
= 1/2 x mol NaCl
= 1/2 x 7.24
= 3.62
Mass Na2SO4 :
= 3.62 mol x 142,04 g/mol
= 514.18 grams
I'm not sure how to do this
An ideal gas does not exist.
Answer:
an ideal gas does not exist except as a conceptual notion, an ideal. Physicists and chemists idealized the behaviour of real gases so that they could explain these phenomena. Under conditions of low pressure and high temperature, all gases behave like real gases, even gases such as UF6 .
Answer:
True
Explanation:
why is it important for the appendages of an arthropod to be joined
Answer:
you mean "jointed." jointed appendages give arthropods much greater movement flexibility and range.
BRAINLIEST & 5 STARS & A FREE THANK YOU
Why was Wegener’s theory of continental drift almost completely discarded?
A. It didn’t explain how continents fit together.
B. It didn’t explain how mountains formed.
C. It wasn’t supported by fossil evidence.
D. It didn’t have a mechanism for how drift occurred.
Which of the following is evidence that the continents were once part of a supercontinent called Pangaea?
A. Island Arcs
B. Deep ocean trenches
C. Glacier scrapings
D. Mid-ocean ridges
Answer:
1: The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in 1596. The concept was independently and more fully developed by Alfred Wegener in 1912, but his hypothesis was rejected by many for lack of any motive mechanism. 2: The most obvious evidence for continental drift is that the continents appear to fit together like pieces of a puzzle. But scientists were skeptical , and Wegener needed additional evidence to support his hypothesis. Glaciers covered large areas that are now parts of these continents.
Answer:
1. D
2. C
Explanation:
1. Although now accepted, the theory of continental drift was rejected for many years, with evidence in its favor considered insufficient. One problem was that a plausible driving force was missing. A second problem was that Wegener's estimate of the speed of continental motion, 250 cm/year, was implausibly high.
2.The most obvious evidence for continental drift is that the continents appear to fit together like pieces of a puzzle. But scientists were skeptical , and Wegener needed additional evidence to support his hypothesis. Glaciers covered large areas that are now parts of these continents.
Describe what happens to a liquid's molecules as it boils and changes into a gas.
Answer:
the particels becomes loose and wild, making gas happen when it is heated up
Liquids evaporate faster as they heat up and more particles have enough energy to break away. The particles need energy to overcome the attractions between them. At this point the liquid is boiling and turning to gas.
Does the following compound contain a polyatomic ion? VF5
Yes
No
Answer:
the answer is yes
Explanation:
I don't no
Precipitation falls in these two forms: Solid / Liquid / Gas I’ll give you 77 and read the pdf
Answer:
It falls in Liquid and Solid.
Explanation:
? + HCl -> FeCl2 + ?
CaO + ? -> Ca(NO3)2 + ?
? + Cu(OH)2 -> CuCl2 + ?
Answer:
1. Fe / H2
2. HNO3 / H2O
3. HCI / H2O
Answer:
1. Fe / H2
2. HNO3 / H2O
3. HCI / H2O
Jimmy's Chemical reaction/ Recipe for making Grilled chese sandwiches is given below: 1 slice of cheese + 2 slices of bread = 1 Grilled chese sandwich ( mole ratio is, 1:2:1) If Jimmy has the following amounts of ingredients (reactants/ reagents) : 10 slices of cheese 30 hslices of bread Answer the questions below in your submission: a) What is the limiting reagent/reactant? b) what is the excess reactant? c) True or false? The number of glilled chese sandwishes he can make is decided by the limiting reactant because it gets used up most.
Answer:
See explanation
Explanation:
We have been told in the question that the equation of the reaction is; 1 slice of cheese + 2 slices of bread = 1 Grilled cheese sandwich ( mole ratio is, 1:2:1) .
Then the reagents are 10 slices of cheese 30 slices of bread. It then follows that 10 slices of cheese should be combined with 20 slices of bread according to the mole ratio.
However, we have 30 slices of bread and 10 slices of cheese so cheese is the limiting reactant while bread is the reactant in excess.
Yes, the number of glilled chese sandwishes he can make is decided by the limiting reactant because it gets used up most.
Which energy resource produces the least amount of air pollution?
coal
natural gas
oil
hydropower
Answer:
hydropowered
Explanation:
took the test
Hydropower is the energy source that produces the least amount of air pollution. Therefore, the correct option is option D.
What is energy?Energy is The capacity or ability to do tasks, such as the ability to forcefully move an object. Energy can exist in a multitude of forms and can change from one to another, including thermal, mechanical, chemical, and nuclear energy. The flow of electric charges known as electrons is what generates electrical energy.
Energy is utilised to make a wide range of goods, power transportation, and power the appliances we use to heat and light our houses. The production of electricity is the main purpose of these various energy sources. All of these many energy sources contribute to the electrical power reserve that is then distributed to various locations via high-powered lines. Hydropower is the energy source that produces the least amount of air pollution.
Therefore, the correct option is option D.
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what best describes what forms in nuclear fission?
a. Two smaller, more stable nuclei
b. two larger, less stable nuclei
c. one smaller, less stable nucleus
d. one larger, more stable nucleus
Answer:
a. Two smaller, more stable nuclei
Explanation:
Answer:
a
Explanation:
took the quiz
How many moles of ammonia gas are produced from 3.6 moles of hydrogen gas and excess nitrogen gas?
Answer:
If so, the limiting reagent of Nitrogen would allow 16 moles of Ammonia to be produced.
Explanation:
4. How many moles of H, would be
produced from 47 grams of H2SO4?
2A1 +3H,504 → Al2(SO4)3 +3H2
Answer:
0.48 moles of H₂ are produced.
Explanation:
Given data:
Number of moles of H₂ produced = ?
Mass of H₂SO₄ = 47 g
Solution:
Chemical equation:
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂
Number of moles of H₂SO₄ :
Number of moles = mass/molar mass
Number of moles = 47 g/ 98 g/mol
Number of moles = 0.48 mol
Now we will compare the moles of H₂SO₄ and H₂
H₂SO₄ : H₂
3 : 3
0.48 : 0.48
Thus, 0.48 moles of H₂ are produced.
How many grams of Cl2 are needed to produce 2.4 grams of NaCl?
2Na + Cl2 --> 2NaCl
The answer is 0.017110756386119. We assume you are converting between moles NaCl and gram. You can view more details on each measurement unit: This compound is also known as Sodium Chloride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles NaCl, or 58.44277 grams.
Hope I helped :)
According to the stoichiometry of the given chemical equation, 1.45 g of Cl₂ are needed to produce 2.4 grams of NaCl.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
According to the given chemical equation, 70.906 g of chlorine gives 117 g sodium chloride, thus, 2.4 g of sodium chloride will be produced, when 2.4×70.906/117= 1.45 g of Cl₂ reacts.
Thus, according to the stoichiometry of the given chemical equation, 1.45 g of Cl₂ are needed to produce 2.4 grams of NaCl.
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What is an ecosystem?
1 . All of the environments and all of the communities on the planet
2. The populations of all species and all abiotic factors within a geographical area.
3 .All of the individual organisms belonging to the same species within a geographical area
4. The populations of all species within a geographical area
5. All abiotic factors within a geographical area
Will these groups of elements form ionic or molecular compounds? sodium and Iodine 
Answer:
Ionic
Explanation:
Answer:
carbon and hydrogen are molecular
Explanation:
find the product of (x+a)(x-a)
Answer:
x^2 - a^2
Explanation:
How far does a car travel in 0.75 hr if it is moving at a constant speed of 88km/hr?
Answer:
66 km.
Explanation:
88 km / 1 hour = 66 km / 0.75 hours.
You need to just multiply 0.75 by 88.
The answer is 66 km.
Einstein believed gravity existed in the fourth dimension as a _____.
curve
free fall
parabola
Answer:
CURVE is the answer
What temperature in Kelvin is 52 degree C?
Answer:
325 K
Explanation:
On a cold, winter day, Sheena rubs her hands together to warm them up. How could Sheena actions be used to explain the Law of Conservation of Energy?
Answer:
When she rubs her hands together, it causes heat or friction
how many atoms are in 7.00 mol of potassium
Answer:
7 mole to atom = 4.21549905E+24 atom
Explanation:
1 mole to atom = 6.0221415E+23 atom
2 mole to atom = 1.2044283E+24 atom
3 mole to atom = 1.80664245E+24 atom
4 mole to atom = 2.4088566E+24 atom
5 mole to atom = 3.01107075E+24 atom
6 mole to atom = 3.6132849E+24 atom
7 mole to atom = 4.21549905E+24 atom
8 mole to atom = 4.8177132E+24 atom
9 mole to atom = 5.41992735E+24 atom
10 mole to atom = 6.0221415E+24 atom
Electrical energy is the amount of energy that an object contains due to kinetic energy
Answer:
The energy an object has due to its motion is called kinetic energy. Factors Affecting Kinetic Energy: the kinetic energy of an object depends on both its speed and its mass. The faster an object moves, the more kinetic energy it has.
Explanation:
The condition of having a small amount of gravity is called _____.
free fall
ISS
microgravity
Answer:
The effects of microgravity can be seen when astronauts and objects float in space. Microgravity can be experienced in other ways, as well. "Micro-" means "very small," so microgravity refers to the condition where gravity seems to be very small.
ANSWER: MICROGRAVITY