How do we calculate how fast (speed) Earth is rotating on its arist
speed = distance / time
speed = distance x time
speed = time / distance
What is the quantum mechanical electron configuration of arsenic?
Answer:
After the 4s sublevel is filled with two electrons, ten electrons fill the 3d sublevel, which is slightly higher in energy than the 4s sublevel. After the 3d sublevel is filled, the remaining three electrons will be in orbitals in the 4p sublevel. Thus, the electron configuration for arsenic is [Ar] 4s(2 squared) 3d(10 squared) 4p(3 squared).
What trophic level has heterotrophs?
a only the second level
b all levels except the first
C only the first level
d only the last level
The electronic structure 1s22s22p63523p64523d8 refers to the ground state of
Kr.
Ni.
Pd.
Fe.
none of the above.
Previous
The given electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁸ is the Nickel (Ni). Therefore, option (B) is correct.
What is an electronic configuration?The electron configuration can be explained as electrons being filled in different energy levels of an atom of a particular element. In the electron configuration, the number of electrons is usually written as a superscript of atomic subshells. For example, the electron configuration of Oxygen is written as 1s²2s²2p⁴.
The sequence of fully filled subshells that correspond to the electronic configuration of a noble gas is denoted by square brackets. The principal quantum number (n) can be used to evaluate the maximum number of electrons in an electron shell.
The value of 2n² is given the maximum number of electrons. The atomic orbitals at low energy must be filled first occupying an orbital with a higher energy level.
The total number of electrons filled in the given electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁸ is 28. The atomic number of Nickel is 28 therefore it is the configuration of Nickel.
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E=hv h= 6.62 x 10^-34 m^2 kg/ s
What would be the energy contained in a photon of light that has a frequency of 5.0 x 10^12?
Please show work!!
v=5.0×10^12Hz
[tex]\\ \sf\longmapsto E=hv[/tex]
[tex]\\ \sf\longmapsto E=6.626\times 10^{-34}Js\times 5\times 10^12s^{-1}[/tex]
[tex]\\ \sf\longmapsto E=33.13\times 10^{-22}J[/tex]
How are energy and work related?
O A. Work and energy are the same.
B. Work times energy is force.
C. Energy is the force needed to do work.
D. Energy is the capacity to do work.
SUBMI
Answer:
c
Explanation:
because u need the energy to be able to work
How are Fahrenheit temperatures converted to Celsius temperatures?
subtract 273 from the original number
multiply the number by 95 and then add 32
subtract 32 and then multiply that number by 59
add 273 to the original number
Answer:
subtract 32 and then multiply that number by 5/9
Explanation:
i took the test on k12
Answer:
multiply the number by 95 and then add 32
Explanation:
i took the test
which chemical formal shows an ionic compound? A. CO2 B.N 2 O C.NaCI D.C6 H12 O6
Answer:
B
N2O
Explanation:
maybe
d can also be lol
What is the goal of the metric system
Answer:
One goal of the metric system is to have a single unit for any physical quantity; a second important goal is to minimize the use of conversion factors when making calculations with physical quantities.
Explanation:
Hope this helps.
Which location is Georgia experiencing fall in the diagram above?
Location A
Location B
Location B
Location D
Answer:
Location A
Explanation:
Answer:
location d
Explanation:
Write the chemical formula for the ionic compound formed by lithium and fluorine.
Answer:
→ LiF
Explanation:
[tex]{ \rm{2Li _{(s)} + F _{2(g)} \dashrightarrow \: 2LiF _{(s)} }}[/tex]
Answer:
[tex]Lithium⟼Li+Fluorine⟼F=LiF[/tex]
Sodium chlorate decomposes into sodium chloride and oxygen gas as seen in the equation below.
2NaClO3 --> 2NaCl +3O2
How many moles of O2 were produced by 2 moles of NaClO3? Round your answer to the nearest whole number.
Explanation:
3 moles of O2 will be produced from 2moles of NaCLO3.
hope this helps you.
Explain why you would want to keep some, but not all, receipts as part of your financial records.
Answer:
Explanation:
Let's try and figure out the ones you don't keep.
Receipts from the dollar tree. You can't return what you bought and you only paid a dollar. It's not worth it.
Food receipts. You can't return it and unless you want to itemize what you spend / month and on what, they don't serve any purpose.
Now figure out which ones you would want to keep
1. Anything pertaining to medical perscriptions. I don't know how it works in the United States, but in Canada we are allowed to deduct only medications with a DIN number.
2 Anything that you would use for travelling that is not for pleasure (ie it is a business expense). So if you are a salesman and your territory is from A to B you would deduct meals, mileages, motels if you must stay away from home
3 In the states some tax receipts are deductible, so you might want to save those.
an ionic compound, salt is a hard, crystalline substance in which the______and_______ions are lined up in a regular pattern
A. polar, nonpolar
B. red,blue
C. right,left
D. positive, negative
PLEASE ONLY GIVE CORRECT ANSWERS!! I WILL GIVE BRAINLIEST
Answer:
An ionic compound, salt is a hard, crystalline substance in which the positive and negative ions are lined up in a regular pattern.
Explanation:
Use the periodic table to answer the question.
A chemical reaction produces a molecule in which all of the atoms have a stable configuration. Which molecule could be the product of the reaction?
(1 point)
SiO
PH3
MgBr
KCl2
The product of this reaction is PH3. All of the atoms in PH3 have a stable configuration.
According to the octet rule, atoms are stable when they have two or eight electrons around their outermost shell. A stable configuration is one in which the outermost shell is fully filled with eight electrons.
The reason behind chemical combination is to enable atoms attain this stable configuration. If we look at the compound, PH3, we will notice that phosphorus has eight electrons around its outermost shell while each hydrogen atom has two electrons around its outermost shell hence all of the atoms have a stable configuration.
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Answer:ph3
Explanation:yeah
Noble gas:
Oxygen
Chlorine
Or Krypton
Answer:
Krypton
Explanation:
Answer:
C
Explanation:
trust me :)
Fill in words that correctly complete this sentence. Anna looks around the skating rink and notices many examples of the movement of thermal energy. For example, she sees her friend holding a cup of hot chocolate in the cold rink. Thermal energy flows from ( ) matter to ( ) matter.
Answer:
hot to cold matter
➪What Is an Acid?❦⭐⭐❦
Answer:
a chemical that burns stuff
Explanation:
acid is something that burns it like that it goes thru it
Answer:
Acid is a sour material which have pH value less than. 7
Help with science ASAP!! Will give brainliest!! :)
who do you think has the problem in this communication process
Answer:
what
Explanation:
i d k what this question is
The accepted value of Ksp is 1.2×10−12 for Ag2CrO4. Calculate the percentage error if your experimentally determined value for Ksp was 1.5×10−10.
The percentage error in the experimental determination is 124%.
The experimentally determined value for Ksp = 1.5×10^−10
The accepted value of Ksp = 1.2 × 10^−12
The formula for percentage error is;
% error = absolute value of ( actual value - experimental value)/actual value × 100/1
% error = absolute value of (1.2 × 10^−12 - 1.5×10^−10)/ 1.2 × 10^−12 × 100/1
% error = 124%
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What mass of H2O is produced by the combustion of 1.00 mol of CH4?
CH4(g) + 202(g) → CO2(g) + 2H2O(e)
The mass of H2O is produced by the combustion of 1.00 mol of CH4 is 36.0 grams.
What do you mean by molar mass ?The term molar mass is defined as the mass of 1 mole of that particular substance and number of grams per mole of a compound.
The balance chemical equation is as follows:
CH4(g) + 202(g) → CO2(g) + 2H2O(e)
The mass of H2O = 36.0 g
Calculating the mass of H2O produced
mass of H2O = 1.00 mol CH4 × (2 mol H2O / 1 mol CH4) × (18.015 g H2O / 1 mol H2O)
mass H2O = 36.0 grams
Thus, The mass of H2O is produced by the combustion of 1.00 mol of CH4 is 36.0 grams.
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which of the following oxides will react with magnesium most readily when both are heated?
A.zinc oxide
B. copper(2) oxide
C.lead (2) oxide
D. aluminum oxide
Answer:
None of the above
Explanation:
• This is because all the metal oxides provided are below magnesium in the reactivity series.
[ pic attached ]
[tex].[/tex]
Find the sum of the
following:
89.001 + 0.0001 + 348.4 +
49166
Answer: 49,603.4011
Explanation:
Answer:
49603.4011
Explanation:
89.001
+. 0.0001
348.4
49166
answer: 49603.4011
Which type of element Is not likely to react chemically with other elements to form a compound?
Answer:noble gases
Explanation:
what is the answer to (x+3)=4
Answer:
1
Explanation:
x + 3 =4
subtract 3 from 4
You are left with one.
Plug in the answer
1+3=4
Nitroglycerine, used to treat patients with angina, is prescribed for a patient by IV at a rate of 2.10 x 102 ug/min. The IV bag
contains 50. mg nitroglycerine/250 mL D5W. How many milliliters per hour should the patient receive?
Given the flow rate and the amount of nitroglycerine contained in the IV bag, the patient should receive 63 milliliters per hours.
Rate of prescribed dose by IV: [tex]2.10*10^2 ug/min = 210ug/min[/tex]
Available: [tex]50mg nitroglycerine = 50000ug[/tex]
Available Volume: [tex]150mL[/tex]
Hence, [tex]50000ug = 250ml[/tex]
and volume for [tex]210ug = x[/tex]
We cross multiply to find x
[tex]x = \frac{210ug * 250mL}{50000ug} \\\\x = 1.05mL[/tex]
Meaning that in a single minute, 1.05mL is been infused into the patient
Now, for an hour, ( 60 minutes ) the volume infused will be;
[tex]1min = 1.05mL[/tex]
[tex]60min = x[/tex]
We cross multiply to find x
[tex]x = \frac{1.05mL*60min}{1min}\\\\x = 63mL[/tex]
Therefore, given the flow rate and the amount of nitroglycerine contained in the IV bag, the patient should receive 63 milliliters per hours.
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1. Since the electron has a negative electric charge and the nucleus has a positive
electric charge, where would you expect to find electrons in atoms?
What is an ionic bond?
A. A bond that forms when electrons are transferred from one atom to another
B. A bond that forms when the electrons of two different atoms repel each other
C. A bond that forms when two atoms with neutral charges come close to one another
D. A bond that forms when one atoms nucleus comes close to another atoms electrons
Please answer!!! No links please!!!
Answer:
A. A bond that forms when electrons are transferred from one atom to another
[tex].[/tex]
Answer:
A. A bond that forms when electrons are transferred from one atom to another
please help with this!
Answer:
d) The object falls towards the ground
Explanation:
