Answer: its C. and B.
Explanation:
hopes this helps
How many moles are in 435 grams of sulfur, S?
Answer:
32.065 is the correct answer.
Why does lithium have a higher ionization energy compared to sodium?
Answer:
There are 11 protons in a sodium atom but only 3 in a lithium atom, so the nuclear charge is much greater. ... The only factor left is the extra distance between the outer electron and the nucleus in sodium's case. That lowers the ionization energy.
A new element, Thorsonium, has two isotopes. Thorsonium isotopes have a mass of 255 amu and 257 amu. Given the average atomic mass of Thorsonium is 255.65 amu, calculate the percent abundance for each Thorsonium isotope.
Answer:
255 amu has relative abundance 67.5% and 257 has relative abundance 32.5%
Explanation:
Average atomic mass =sum of product of atomic mass and relative abundance all divided by hundred or total abundance
Electrons can occur only in specific
Answer: Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths.
How many moles of potassium are needed to react completely with 7.50 mol of chromium (III) oxide? Show work.
Answer:
45 mol
Explanation:
First you need to balance the equation:
6K + Cr2O3 = 3K2O + 2Cr
the proportion of the coeficients of potassium and chromium oxide is 6 to 1 so we need to multiply 7.5 by 6 to get 45.
2) Where is Earth, exactly? Use this image to find our location. Earth is
Located in the
A) Norma arm
B) Outer arm
C) Orion spur.
D) Galactic bar
Answer:
C) Orion spur.
The Orion Arm is a minor spiral arm of the Milky Way Galaxy that is 3,500 light-years across and approximately 10,000 light-years in length, containing the Solar System, including Earth.
How much KNO3 can be dissolved at 50 C in 100g of water?
Answer:
Initially there is 100 g of potassium nitrate in solution, at 50 °C the solubility is 84 g/100g (original data or graph), so 16 g will have crystallised out
Explanation:
PLEASE ANSWER IF ITS CORRECT I WILL MARK IT AS BRAINLIEST PLZ??
What do you think would happen if the temperature of a gas is higher than the other when applying Graham's Law? *
A) There will be no effect on the gas
B) The kinetic energy of the gas particles would increase
C) The volume of the gas particles would increase
Answer:
There will not be effect on the gas
Explanation:
I'm sure that it's correct answer
explain the trend in boiling parts of the halogen
Answer:
The boiling point of the halogens increases as you go down the group. The halogens exist as diatomic molecules, with both atoms sharing an electron to completely fill the outer shell. The increase in boiling (and melting point) can be attributed to the increase in intermolecular forces (van der Waals).tion:
ok so can someone help me with my guy problems
Answer:
ofc! whats ur question my guy
Explanation:
Answer:
sure
Explanation:
How many oxygen (O) atoms are in a molecule of C3H403?
O A. 1
O B. 10
O c. 4
O D. 3
Answer:
your answer is 3
Explanation:
Answer:
D
Explanation:
"O3" means there are three atoms of that particle element in the substance.
9. Which of the following is a chemical property of water at 4°C? its temperature its state its color
Consider the reaction X + Z ?
Assume the following:
1) The product is an ionic compound.
2) Element X has three valence electrons
3) Element Z needs two valence electrons to have completed s & p subshells (full octet)
What would make the most sense for the formula of the product?
Answer:
X2Z3
Explanation:
Based on the clues, X is a metal and Z is a non-metal.
X could be aluminum and Z would need to be an element from the oxygen family.
Plasma is the most common state of matter in the?
Earth's atmosphere
Earth's crust
oceans
universe
Answer:
Universe
Hope its helpful
Thank you
The following equation represents what type of chemical reaction?
2Ag + H2S → Ag2S + H2
A. Double Replacement
B. Single Replacement
C. Decomposition
D. Synthesis
Answer:
single replacement
Explanation: N/A
R4te me for 10 points and be honest with me PLEASE
Answer:
id give you and 8 or 9 but you are really pretty tho
Explanation:
find the pH of a 0.79 M solution of NH3,a weak base,if it has a Kb of 4*10 -5
Answer:
Cat
Explanation:
Bcuz I said so that it's a cat
Jazz and Pam went to Six Flags over Texas. They had fun riding the rides at the
amusement park. Their favorite ride was the Road Runner Express roller coaster. It
made so many turns, and it was going up hills and down hills really fast. Their inertia
was always changing throughout the ride. Once the roller coaster came to a stop they
moved forward into their seatbelt. This is an example of which Newton's Law?
Answer:
newtons first law
Explanation:
an object in motion will stay in motion unless acted upon by an outside force
How many grams of C are there in 0.234 moles of caffeine?
Solo lo ago para obtener puntos jejeje
A temperature of 37C is equivalent to a temperature of
Answer:
98.6 Degrees Fahrenheit
Explanation:
To convert from Celsius to Fahrenheit, the formula is F=(1.8*C)+32. Since C=37 in this case, our formula is F=(1.8*37)+32. First, solving the work in the parentheses, 1.8*37=66.6. Adding that will get you to 98.6, so F=98.6.
what is chemical composition of the atmosphere
Answer:
nitrogen 78%, Oxygen 21%, Argon 0.9%, Carbon dioxide 0.03%, water 0-4%(depends)
Explanation:
Answer:
definition: The atmosphere is composed of a mix of several different gases in differing amounts. The permanent gases whose percentages do not change from day to day are nitrogen, oxygen and argon. Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%.
Explanation:
Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.
Layers of the atmosphere:
- From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere
How do animal behaviors, such as hibernation or migration, enhance their survival?
Answer:
the reason a lot of animal ether hibernate is because they are escaping the cold or looking for food and the only reason we Humans don't hibernate is for two reasons. Firstly, our evolutionary ancestors were tropical animals with no history of hibernating: humans have only migrated into temperate and subarctic latitudes in the last hundred thousand years or so.
Explanation:
A behavioral adaptation when an animal becomes inactive in the winter is _____.
A. hibernation
B. camouflage
C. migration
D.sleeping
Answer:
A. hibernation
Answer:
Hibernation.
Explanation:
1.
what can noble gases be used for?
2.
what is a vertical column called in the periodic table
3.
what is the horizontal column in the periodic table
Answer:
1. They are mostly used to protect materials and prevent chemical reactions.
2.These are Groups
3. I guess it is Rows
What is the main process by which water moves from land to the atmosphere?
Answer:
isn't that evaporation if not you can just delete my answer-
Explanation:
what’s the difference between 2o and o(subscript 2)?
Answer:
2O is an atom while O2 Is a molecule
What is it about the structure of magnesium atoms that makes them react more slowly than sodium atoms?
Answer:
A reactive metal has the ability to easily lose an electron and acquire a positive charge. Sodium easily loses electrons and acquires a positive charge. Sodium easily lose electrons than magnesium and get oxidized to easily.
Explanation:
what happens when a copper vessel is exposed to moist air for long? please answer fast
True/False. A program is an algorithm that has been coded into something that can be run by a machine. *
Answer:
true
Explanation:
Sorah, Sammie,Victor, Vicki, ond Valerie are in math group. Two students are randomly picked to
be the co-captains. What is the probability thote students were ssmmie and Victor?
Answer:
[tex]\frac{2}{5}[/tex]
Explanation:
Probability refers to chances of occurrence of any event.
Value of probability is greater than or equal to 0 and less than or equal to 1.
Probability = Number of favorable outcomes ÷ Total number of outcomes
Total number of students in math group = 5
Also, 2 students are randomly picked to be the co-captains.
Probability that students were Sammie and Victor = [tex]\frac{2}{5}[/tex]