1.29×10²⁴ atoms are in 2.15 moles of water. Atom is also the smallest piece of substance with chemical element-like characteristics.
What is atom?The smallest unit of matter that may be divided without producing electrically charged particles is the atom. It is also the smallest piece of substance with chemical element-like characteristics. As a result, the atom serves as the fundamental unit of chemistry.
Space makes up the majority of an atom. The rest is made up of a cloud of electrons that are negatively charged surrounding a nucleus that is positively charged made up of protons and neutrons. The behaviour of the electron in an atom can be compared to that of particles surrounding the nucleus.
number of atoms = number of moles ×6.022×10²³
= 2.15×6.022×10²³
= 1.29×10²⁴
Therefore, 1.29×10²⁴ atoms are in 2.15 moles of water.
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Can someone please help me with this question?
es 3l por 0/0 (1234008×556098
an atom of which element has the strongest attraction for electons in a chemical bond?cholorine, phosphorus, carbon, sulfur
The number of atoms of any element in the given chemical formula is the number that is written on the foot of the symbol of that element. Therefore, chlorine has the strongest attraction for electrons in a chemical bond.
What is atom?Atom is the smallest particle of any matter. Atom combines to form element and element combine to form molecule or compound.
Atom consists of electron, proton and neutron. The total mass of atom is inside the nucleus. Inside the nucleus proton and neutron is there. So calculate mass of an atom, total mass of all protons is added to the total mass of neutron. Electrons revolve around the nucleus.
Electronegative element have greatest strongest attraction for electrons due to high effective nuclear charge. Among the given molecules, chlorine is the most electronegative element. Chlorine has the strongest attraction for electrons in a chemical bond.
Therefore, chlorine has the strongest attraction for electrons in a chemical bond.
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Explain why Thorium-229 is radioactive
Answer:
Thorium-229 is a very insoluble metal that emits radioactive alpha particles. It is generated by the decay of uranium-233 and has a half-life of 7.340 years.
Explanation:
braliyest please
How many moles of lithium fluoride (LiF) are in a 8.5 g sample?
What is the definition of energy (in scientific terms)?
A. The motion of an object
B. The ability to do work
C. A force used on an object
D. A change in temperature
A chemist prepares a solution of silver(I) perchlorate by measuring out of silver(I) perchlorate into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's silver(I) perchlorate solution. Be sure your answer has the correct number of significant digits.
The question is incomplete, the complete question is;
A chemist prepares a solution of silver (I) perchlorate (AgCIO4) by measuring out 134.g of silver (I) perchlorate into a 50.ml volumetric flask and filling the flask to the mark with water. calculate the concentration in mol/L of the silver (I) perchlorate solution. Round your answer to 2 significant digits.
Answer:
13 mol/L
Explanation:
We must first obtain the number of moles of silver I perchlorate involved
Molar mass of silver I perchlorate = 207.32 g/mol
Number of moles of silver I perchlorate = 134g/207.32 g/mol = 0.646 moles
Recall that;
n =CV
C= concentration
V= volume
n = number of moles
C = n/V
C = 0.646 moles * 1000/50
C = 13 mol/L
What mass will 7.29 moles of CO2 gas contain?
Answer:
[tex]320.8329\ \text{g}[/tex]
Explanation:
[tex]n[/tex] = Moles of [tex]CO_2[/tex] = [tex]7.29\ \text{moles}[/tex]
[tex]M[/tex] = Molar mass of [tex]CO_2[/tex] = [tex]44.01\ \text{g/mol}[/tex]
Mass is given by
[tex]m=nM[/tex]
[tex]\Rightarrow m=7.29\times 44.01[/tex]
[tex]\Rightarrow m=320.8329\ \text{g}[/tex]
The mass of the [tex]CO_2[/tex] gas will be [tex]320.8329\ \text{g}[/tex].
How do we determine climate?
a
I have no idea
b
Precipitation and weather
c
Temperature and weather
d
Precipitation and temperature
Answer:
D but I’m traitor figure out y my question is precipitation helps determine climate by. Weathe. My options are The interaction of the prevailing winds upon land or oceans. The development of local storms. The passage of weather fronts. All of the above
Explanation:
The type of neuron that carries impulses from the brain are...
45) Rank Ca, Se, Co from the lowest to highest ionization energy.
46) Rank Te, S, and O from the lowest to the highest electronegativity.
Answer:
45) Ca < Co < Se
46) Te < S < O
Explanation:
These questions are talking about periodic trends. Here are some things to know about periodic trends:
Electronegativity
how well an element attracts an electronincreases left to right and bottom to top on the periodic tablenoble gases are not includedfluorine is most electronegative element, Francium is leastAtomic Radius
the distance between nucleiincreases from right to left and top to bottom on the periodic table the more electronegative an element is, the smaller it's atomic radiusFrancium has the largest atomic radius while fluorine has the smallestIonization Energy
the energy required to remove an electrondirectly proportional to electronegativityMetallic Character
how closely an element's properties match those of a metaldirectly proportional with atomic radiusHope this helps :)
how does bases taste?
Answer:
bases taste bitter, feel slippery, and conduct electricity when dissolved in water
Explanation:
Answer:
like peas
Explanation:
someone please help!! I need an answer by 10:20
“I used to think _____________ about electricity, and now I think….”
Im in 7th grade btw
100 points!!!
Answer:
"I used to think a lot about electricity, and now I think..."
or a synonym of it.
Explanation:
As the volume of a gas increases, what happens to the pressure of the gas?
HELP IM AB TO CRY
What is the force of gravity (in Newtons) acting between the Earth and a 125-kg person standing on the surface of the Earth?
Answer:
1.23 × 10³ N
Explanation:
Step 1: Given and required data
Mass of the person (m): 125 kgAcceleration due to the gravitational force (g): 9.81 m/s²Step 2: Calculate the force acting between the Earth and a 125-kg person standing on the surface of the Earth
We will use Newton's second law of motion.
F = m × g
F = 125 kg × 9.81 m/s²
F = 1.23 × 10³ N
this woman is riding a bicycle down a hill at a constant speed and in a straight line.
Which change will increase the speed of the bicycle?
A. Added forces of 30 N up the hill and 20 N down the hill
B. Added forces of 30 N up the hill and 30 N down the hill
C. An added force of 20 N down the hill
D. An added force of 20 N to the side of the hill
Answer:
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teĺlllll
Can someone help me over here? I need an negative charge and also another thing is that in a question it asked me to use something that would represent an ion. I’m not sure on what to choose either Hydrogen or Helium but just please send help.
Answer:
You could use a hydrogen anion which has 2 electrons.
Explanation:
An ion is an atom or molecule with a net electric charge because it has more or less electrons compared to the original atom or molecule.
An anion is a negatively charged ion.
A cation is a positively charged ion.
Normally a hydrogen atom has one proton and one electron.
So a hydrogen anion (H-) means that it has one proton and two electrons, which means the positive charge will be +1 and the negative charge will be -2.
Ultimately, giving the entire molecule a net charge of -1 because -2+1 = -1.
(I hope this helps! I am not 100% sure what's the format of this question. Like is it interactive? online? Did you draw all those electrons on the diagram? or were they given? Are the numbers given as well? or did you type those in? So I just tried my best to give you something that might work.)
If 0.45 liters of water is formed during the combustion of propane, how many liters of carbon dioxide are formed?
will give you brainiest
How many moles are there in 1.20 x 1025 particles of helium?
Answer:
You would get 19.969 moles.
Explanation:
You would get 19.969 moles.
Please explain how to do this one !! Which of the following ionic solids would have the largest lattice energy?
CaBr2
NaF
CsI
SrO
BaSO4
Answer:
I think it's Csl
I don't really know
but follow me and heart this
How many atoms of which elements are represented by the following formula?
C6H12N
Answer:
19 atoms
Explanation:
6 carbon, 12 hydrogen, one Nitrogen
The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens to the
pressure of the gas?
O It decreases by a factor of four.
O It increases by a factor of four.
O It decreases by a factor of eight.
O It increases by a factor of eight.
Save and Exit
6.00 moles of sodium perchlorate contains the same number of atoms as __________. 6.00 moles of sodium perchlorate contains the same number of atoms as __________. 6.00 moles of sodium permanganate 6.00 moles of strontium oxide 6.00 moles of sodium cyanide 6.00 moles of lithium phosphate 6.00 moles of sodium nitrite
Answer:
6.00 moles of sodium permanganate
Explanation:
Let us attempt to count the number of atoms present in sodium perchlorate. The formula of the compound is NaClO4
Sodium atoms - 1
Chlorine atoms - 1
Oxygen atoms -4
Total number of atoms = 6
Among the options, only KMnO4 also has six atoms. One atom of potassium, one atom of manganese and four atoms of oxygen.
6.00 moles of sodium perchlorate contains the same number of atoms as: A. 6.00 moles of sodium permanganate.
How to calculate the number of atoms.First of all, we would determine the chemical formula and the number of atoms contained in each chemical compound as follows:
For sodium perchlorate:
Sodium perchlorate = [tex]NaClO_4[/tex]
[tex]NaClO_4[/tex] = [tex]1+1+2[/tex] = 6 atoms.
For sodium permanganate:
Sodium permanganate = [tex]KMnO_4[/tex]
[tex]KMnO_4[/tex] = [tex]1+1+2[/tex] = 6 atoms.
For strontium oxide:
Strontium oxide = [tex]SrO[/tex]
[tex]SrO[/tex] = [tex]1+1[/tex] = 2 atoms.
In conclusion, we can deduce that 6.00 moles of sodium perchlorate contains the same number of atoms as 6.00 moles of sodium permanganate.
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what is the pH of pure water?
7 if not exposed to the environment
Answer:
(H20) is 7 at 25oC,
Explanation: hope this helps but when exposed to the carbon dioxide in the atmosphere this equilibrium results in a pH of approximately 5.2.
List 3 metals that could replace lead in the compound Pb(NO3)2 in a single replacement reaction.
Answer:
AKWIJKNZQSOKQPALQALQPALALQLLKILILI
How many protons, electrons and neutrons does carbon have?
Answer:
6 all hope it helps thanks
Which of the following is the best example of kinetic energy being transformed into potential energy?
A. water flowing into lake behind a dam
B. an avalanche sliding down a mountainside
C. wind pushing a sailboat through the water
D. a motorboat pulling a water skier across a lake
WHICH ONE IS IT?!
Answer:
The correct answer is A
Explanation:
That water stops moving once it gets to the dam and turns into potential energy
What is the formula for Silver (I) chloride?
Answer:
AgCl formula for silver(l) chloride
Which statement describes an interaction between the biosphere and the atmosphere that is related to
photosynthesis?
• During photosynthesis, plant roots take in water from soil.
O During photosynthesis, plants take in carbon dioxide from the air.
O Through photosynthesis, energy stored in plants is released into the air.
O Through photosynthesis, energy stored in plants is transferred to humans who eat them
Answer:
O During photosynthesis, plants take in carbon dioxide from the air.
Answer: The answer is: During photosynthesis, plants take in carbon dioxide from the air.
Explanation: I have my ways ;>
Question 1 S
A student left a sealed jar of water outside her home. Water can be a solid liquid or gas When she put it outside the water was a
solid Twelve hours later, the water had changed phase and was a liquid. What happened to the water molecules?
A Before the student left, the molecules were moving in place. After the molecules were moving around each
other
B Before the student left, the molecules were moving around each other After the molecules were moving away
from each other.
C Before the student left the molecules were moving around each other. After the molecules were moving in
place
D. Before the student left the molecules were moving away from each other. After the molecules were moving
around each other
Answer:
A
Explanation:
Before the student left, the water molecules were moving in place, then after that, the water molecules were moving around each other.
Option A is correct.
Water can exist in three phases of matter as solid, liquid, or gas. In the solid state, the constituent of the particles is closely packed together.
In the liquid state, the particles are held together by intermolecular forces and they move around each other.In the solid state, before the student left the sealed jar outside her house, the particles molecules of the water are moving in place closely packed together, but after a period of time, the molecules start to move around each other.
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A 57 g g sample of iron reacts with 24 g g of oxygen to form how many grams of iron oxide?
A 57 grams sample of iron reacts with 24 grams of oxygen to form 81 grams of iron oxide.
What is iron oxide?
Iron oxide is a chemical compound that is made by the addition of iron and oxygen can also be known as ferrous oxide if react with two oxygen molecules then ferric oxide.
In the sample, the iron is 57 grams and the oxygen is 24 grams,
Fe + O -------------> FeO
Iron oxygen iron oxide
By adding the mass of iron and oxygen,
57 + 24 = 81 grams of iron oxide.
Therefore, the mass of iron oxide is 81 grams if 57 grams sample of iron reacts with 24 grams of oxygen.
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