Answer:
One lone pair
Explanation:
If we follow the valence bond approach of looking at chemical bonding, then we have to consider the electronic configuration of Fe^3+ which is; [Ar] 3d5.
This means that we have three electrons available to combine with three fluorine atoms leaving one lone pair to form FeF3.
Hence, FeF3 has one lone pair of electrons.
help me plz ty:}
What is the number of atoms in the reactants?
What is the number of atoms in the product?
Answer:The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products. if those are answers? i cant be sure but sorry
Explanation:
Answer:
4 reactants and 4 product
Explanation:
2 mg atoms and 2 o atoms = 2 mgo
It is hard to identify a _____ strictly by color because many of them look so much alike.
Answer:
Mineral
Explanation:
Many minerals share the same colors so it would be one of the least important parts of mineral identification
Can you pls help me out
Answer:
A
Explanation:
yellow perch doesn't have a arrow to it from the snail
PLEASE HELP
The statement that "Newton knew what gravity did but he could not explain why gravity did it" is
the basic difference between
O A. A scientific law and a scientific theory
O B. A scientific theory and a societal law
O C. A scientific law and a societal law
O D. A hypothesis and a scientific law
Answer:
a
Explanation:
hopes this helps ______Г×××××××××××××××/Answer:
b
Explanation:
its not d bc no hypothesis was made
How does soil affect groundwater?
Examine why amusement park rides have
restraint bars to keep people safe. Apply
Newton's first law of motion to your
explanation.
Answer:
Newton's first law of motion states that an object in motion tends to stay in motion. This is what keeps the roller coaster rolling through the hills and turns after it accelerates down the initial ramp. Also, the riders inside the car will experience changes in accleration and apparent weight. The riders will keep going at the same speed in the same direction unless some other force (the seat) acts on them to change that speed or direction. At the bottom of hills, they try to continue downward, and are pressed into the seat. At the tops, the riders are lifted up in their seats as they try to continue upward even as the seat pulls them down into the next drop. The same thing occurs on turns, where riders are pushed into the side of the seat as the coaster turns. (This is the reason for harnesses, seat belts, and restraining bars.)
Explanation:
The chance of getting out moved from the seats is more in riders or on vehicles because, as stated by the first law of motion an object tends to stay in its state unless an external force acts on it. Thus, the ride will tend to move front even after stopped.
What is inertia?Inertia is the tendency an object to continue its state of motion or rest until an external force act on it. This concept is explained by Newton's first law of motion.
This effect can be in many situations. For example in moving bus, when it is suddenly breaked, the travelers will move up front just because of the inertia of the bus. Similarly a stationary bus, when started will initially move back once.
The riders in amusement park will experience the same. Hence, there is a possibility of people moving out from the seat when it is stopping or starting that's why they have restraint bars.
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Jessica needs 658 cups of flour for her recipe. The box she has only has 78 cup of flour left in it. How many more cups of flour does she need?
Answer:
580
Explanation:
pmz make me brainliest
How is the periodic table organized?
Answer: there are sections where one side is gases and the other is non-gases. Also, the left side is more reactive and the right side is less reactive
Answer:
The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson.
Explanation:
How many moles of helium gas are present in 120 liters at STP
a. 10.5 moles
b. 5.00 moles
c. 6.5 moles
d. 5.4 moles
Answer:
d) n = 5.4 mol
Explanation:
Given data:
Number of moles of He = ?
Volume of He gas = 120 L
Temperature and pressure = standard
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
1 atm × 120 L = n × 0.0821 atm.L/ mol.K × 273.15 K
120 atm.L = n × 22.43 atm.L/ mol
n = 120 atm.L / 22.43 atm.L/ mol
n = 5.4 mol
Almost 98% of earthquakes occur at the boundary of a tectonic plates when they slide against one another. Despite this, Indiana
still has seismic zones that experience increased seismic activity. This is particularly heavy in the Wabash Valley Fault zone in the
southwest comer of the state. How do you explain how seismic activity is felt in this area?
A)
The Wabash Valley Fault Zone is part of the Pacific plate boundary
B
9
The Wabash Valley Fault Zone is close to the center of the North American
Plate which is where the majority of earthquakes occur.
The Wabash Valley Fault zone is an interplate seismic zone which means
that it lies directly on the boundary of a major tectonic plate
The Wabash Valley Fault Zone is an intraplate seismic zone which means
that seismic activity is felt on the interior of a major tectonic plate
D
Hurry
the only explanation would be that it is on top of a hotspot I don't know if this helps at all
determine the volume displaced and then calculate the density of this 54 g sample of brass
Answer:
i don't really know but i think it's 61 g
Explanation:
if im wrong i soooooooooooooooooooooooooooooooooooooooooooooooooooooooooo sorry
If atoms contain charged particles, why do they not have a charge?
A.They contain the same number of protons as electrons
B.The charge is locked away in the nucleus
C.They contain equal numbers of protons and neutrons
Answer:
A
Explanation:
They have the same number of positive protons & negative electrons, hope this helps
I NEED HELP BIG TIME PLZ HELP ME (ILL GIVE 40 POINTS) What is true of electrons? (3 points) a They are positively charged and located inside the nucleus. b They are positively charged and located outside the nucleus. c They are negatively charged and located inside the nucleus. d They are negatively charged and located outside the nucleus.
Answer:
d.
Explanation:
What is the chemical formula and net ionic equations for all three solutions.
Answer:
See answer below
Explanation:
As you are asking for chemical formula and ionic equation, then, I will assume that after the station #5 below, are the solutions you are requiring.
You are also not specifing if you want for example, result of solution 1 + solution 3. If you need that, please post that on another question.
Now for the chemical formula, you need to identify the elements in all 3 solutions, and also the type of compound.
1. Solution 1 Barium Chloride:
In this case we have Barium on one side, and Chlorine on the other side, the symbol for those are Ba and Cl. As Barium have the +2 oxidation state, cause is the only one that it can have, when it's next to an halide like chlorine or bromine, it will form a binary salt. The halides, usually work with the lowest oxydation state. In the case of Chlorine it will be -1, so, the formula will be:
BaCl₂
And the net ionic equation will be the chemical equation that shows how the charges and atoms are balanced. In this case it would be:
Ba²⁺ + 2Cl⁻ ------> BaCl₂
2. Solution 2 and 3, Copper (II) nitrate and Copper(II) sulfate:
In this case I will work with both, because both of the solution have copper and the only difference is the anion, which is nitrate in one, and sulfate on the other. In this cases, we have a tertiary salt, The copper's symbol is Cu, and is working with it oxydation state +2. Nitrate is an anion and have the formula NO₃ working with the oxydation state -1. Sulfate is SO₄ and works with oxydation state -2 instead.
The chemical formula and ionic equation for both will be:
Copper(II) nitrate: Cu(NO₃)₂
Copper(II) sulfate: CuSO₄
And the net equations:
Copper nitrate: Cu²⁺ + 2NO₃⁻ ------> Cu(NO₃)₂
Copper sulfate: Cu²⁺ + SO₄²⁻ -------> CuSO₄
Hope this helps
. Summarize: Complete the following statements:
A. 1 mole of any element contains 6.02 x 10^23
_______
B. 1 mole of any compound contains 6.02 x 10^23
_______
Answer:
A. 1 mole of any element contains 6.02 x 10^23 atoms.
B. 1 mole of any compound contains 6.02 x 10^23 molecules.
Explanation:
:)
Taking into account the definition of Avogadro's Number, the correct answers are:
1 mole of any element contains 6.023×10²³ atoms1 mole of any compound contains 6.023×10²³ moleculesYou have to know that Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole.
Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression.
Avogadro's number applies to any substance, because the number of elementary units in a mole of substance is, by definition, a constant that does not depend on the material or the type of particle considered.
So, in this case, the correct answers are:
1 mole of any element contains 6.023×10²³ atoms1 mole of any compound contains 6.023×10²³ moleculesLearn more about Avogadro's Number:
brainly.com/question/11907018?referrer=searchResults brainly.com/question/1445383?referrer=searchResults brainly.com/question/1528951?referrer=searchResultsHow many grams is 1.2 moles of Neon?
Mass of Neon : = 24.21564 g
Further explanationGiven
1.2 moles of Neon
Required
mass of Neon
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
Mol = mass : Molar mass
so mass of Neon(MM=20,1797 g/mol) :
= mol x MM
= 1.2 x 20,1797
= 24.21564 g
give everyday examples of exothermic and endothermic reactions
Answer:
Explanation:
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Answer:
endothermic:instant cold pack,cooking egg,photosynthesis
exothermic:
Lighting a match.
A fireworks display.
Lighting coals on a barbeque.
Starting a gas oven.
Lighting firewood for a campfire.
Burning a piece of paper.
How many moles of sulfuric acid (H2SO4) are needed to react completely with 6.8 moles of lithium hydroxide (LiOH)? (4 points) 2LiOH + H2SO4 → Li2SO4 + 2H2O
Answer:
3.4 mol H2SO4
Explanation:
Took the test
Tameca is planning a hiking trip. The trail she would like to follow is 7.5 miles long. She plans to start her hike at 10:00 am. She hopes to reach the end of the trail at 3:00 pm. Determine the number of miles per hour that Tameca plans to hike.Help me fill in the blank and I will vote branliest
___________________ miles per hour
Answer:
1.5 miles per hour
Explanation:
7.5 miles in 5 hours
7.5/5=1.5 miles per hour
witch of the following is not a method of heat transfer?
radiation Insulation Conduction Convection
Answer:
insulation is not a method of transfer of jeat
Answer:
insulation
Explanation:
convection, conduction and radiation are all methods of heat transfer.
Pleaase answer ive been stuck on it for a long time
Answer:
sorry pic is not working if you can get it working i will answer
Explanation:
if you cant explain it to me
Which of the following is one way creativity can help scientists?
By ensuring they follow the scientific method.
By increasing the amount of time it takes to complete scientific experiments.
By making sure they only try things that have already been proven.
By leading them to ask more questions about the natural world.
Answer:
bye ensuring they follow the scientific method.
Explanation:
I looked it up it's been answer 29 times same answer
An object is described as being 350 K. What does this indicate about the object?
A.
length
B.
volume
C.
temperature
D.
mass
Answer:
Temperature
Explanation:
K stands for Kelvin not Kilometers
An atom with one electron in its valence
shell will tend to:
An atom with one electron in its valence shell will tend to lose that electron to achieve the noble gas configuration and becomes a cation.
What is a cation?Cations are positively charged ions and are formed when an atom loses its electrons. They lose one or more electrons from their valence shell but do not lose any protons. Therefore, they get a net positive charge. Some examples of cations are Potassium (K⁺), Calcium (Ca²⁺), and hydrogen (H⁺).
Anions and cations are both ions and have opposite electrical charges. They feel attraction for each other. A cation repels another cation whereas an anion repels another anion.
An atom that has one electron in its valence shell will always tend to lose that electron to get completely filled electronic configuration. So the atom will convert into a cation to attain the more stable noble gas configuration.
For example, sodium has an electronic configuration 1s²2s²2p⁶3s¹. It has one electron in its valence shell, so it converts into Na⁺ by losing one electron and attains a configuration similar to Neon noble gas.
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A mineral has these 5 characteristics
They apply a cumulative force of 1080 N to push the car 21,800 cm to the nearest fuel station. Determine the work done on the car.
Answer:
2.35 × 10⁵ J
Explanation:
Renatta Gass is out with her friends. Misfortune occurs and Renatta and her friends find themselves getting a workout. They apply a cumulative force of 1080 N to push the car 21,800 cm to the nearest fuel station. Determine the work done on the car.
Step 1: Given data
Force applied on the car (F): 1080 NDistance traveled by the car (d): 21,800 cmStep 2: Convert "d" to meters
We will use the conversion factor 1 m = 100 cm.
21,800 cm × 1 m/100 cm = 218 m
Step 3: Calculate the work done (W)
We will use the following expression.
W = F × d
W = 1080 N × 218 m = 2.35 × 10⁵ J
Compare and contrast conventional and convectional oven
Answer:
The conventional oven and the convection oven are confused with each other due to their similar look and style, and a lot of their functioning is quite the same as well.
The conventional ovens have existed for over half a century, and have derived their functioning from traditional ovens that are over 4,000 years. They function with a bottom-up heat transfer from a fixed burner source.
The convection ovens were made recently as a way to get better heating results for all types of dishes and recipes, with the introduction of a fan system along with an exhaust which allows the circulation of hot air around the cavity of the oven.
Explanation:
Which type of lava is most likely to cause the most widespread damage
(Tap pic to see)pls help me.
Answer:
Lave from composite volcanoes
Explanation:
In what areas of the periodic table do you find the least reactive elements?
Answer:
Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. Noble gases are the least reactive of all elements. That's because they have eight valence electrons, which fill their outer energy level.
Elements: Argon
in the right side of the periodic table . It is group 18 called nobel gas or group This group has all element in stable form each has 8 electron in outermost orbit they are non reactive
6. A group of students is performing a simple scientific investigation with baking soda and vinegar. The students place vinegar in a beaker and put baking soda inside of a balloon. Then, the balloon with the baking soda is attached to the mouth of the beaker. The reaction of the baking soda being poured from the balloon into the beaker is shown Baking soda falls Vinegar and baking soda mixture into vinegar What evidence shows that a chemical change occurred with the baking soda and vinegar?
A The vinegar and baking soda released a gas.
B. The vinegar and baking soda gave off an odor.
C. The vinegar and baking soda produced a flame
. D. The vinegar and baking soda changed in temperature.
Answer:
A. The vinegar and baking soda released a gas. Hope it helps. :)
Answer:
A
Explanation: I tried this experiment a few days ago w/ my sister.
It reacted like a volcano explosion.
