Answer:
false
Explanation:
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:
From the balanced reaction:
B2H6 + 3O2 ⇒ 2HBO2 + 2H2O
How many moles of O2 will be needed to burn 36.1 g of B2H6?
Answer:
The mass of O₂ that will be needed to burn 36.1 g B₂H₆ is 125.29 g.
what’s the difference between 2o and o(subscript 2)?
Answer:
2O is an atom while O2 Is a molecule
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.
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.
Hydrochloric acid (HCI) breaks down into hydrogen gas and chlorine gas according to the reaction:
2 HCI — Cl2 + H2
If 42 grams of HCl reacts, what is the theoretical yield of hydrogen gas produced?
A) 2.32 g
B) 737 g
C) 0.57 g
D) 1.16 g
Answer:
(D)=1.16g
Explanation:
Answer:
D) 1.16 g
I'm not sure about answer ..
Please help me ty! Correct answers only ty
Answer:
Ca(NO3)2 + Na2C2O4 ---> <---- Ca + 2NO3 + 2Na + C2O4
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:
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.
What type of chemical reaction is given by the following balanced equation:
Al₂O3 → AL+ O₂
Answer:
Decomposition
Explanation:
3. A 500Kg block of aluminium has a volume of 0.185m3. Calculate it's density.
Answer:
Density = mass/volume
Density = 500 kg/0.185m3
Density = 2702.7 kg/m^3
Hope this helps!
Answer:
2702.7 kg/m3
Explanation:
d= 500kg / 0.185m3
d=2702.7 kg/m3
ok so can someone help me with my guy problems
Answer:
ofc! whats ur question my guy
Explanation:
Answer:
sure
Explanation:
Why can't krypton and xenon separate during the separation of gases in the air?
Answer:
The remaining gas is a mixture of argon, neon, krypton, and xenon. Because these elements are chemically very unreactive, chemical means cannot be used to separate them.
Explanation:
Answer:
They're in Group 0 as they have full outer shells meaning they are chemically unreactive as they already have full outer shells meaning they don't want to lose or gain any electrons. Thus, they can't separate during the separation of gases in the air.
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
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.
Electrons can occur only in specific
Answer: Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths.
True/False. A program is an algorithm that has been coded into something that can be run by a machine. *
Answer:
true
Explanation:
9. Which of the following is a chemical property of water at 4°C? its temperature its state its color
How does the entropy of a geyser system change as energy is added to the system ??
Answer:
Entropy increases as temperature increases. An increase in temperature means that the particles of the substance have greater kinetic energy. The faster moving particles have more disorder than particles that are moving more slowly at a lower temperature.
Explanation:
The entropy of the system increase as the temperature increase because at higher temperature there will be more randomness in the molecules.
What is entropy?Entropy can be described as a measure of spontaneous changes that take place in a system. In simpler words, entropy is the tendency of the universe towards disorder.
Entropy measures of randomness or disorder of a thermodynamic system and is represented by ‘S’. The value of entropy is dependent upon the amount of substance so it is an extensive property.
The change in the value of entropy depends on changes in quantities such as temperature, pressure, volume, and the number of moles of substance present in the system.
When the temperature of the system increases the kinetic energy of the molecules increases and they start to move faster. Therefore, the entropy of the geyser system increase as energy is added to the system.
Learn more about entropy, here:
https://brainly.com/question/13146879
#SPJ2
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 atoms are in 3.5 moles of arsenic atoms?
Answer:
1 mol of atoms = 6.022 ×1023 atoms. 3.5mol × 6.022 × 1023 atoms 1mol = 2.11 × 1024 atoms =.........
Explanation:
2160.64 atoms!
two oxides, X and Y are added seperately to dilute sulfuric acid and dilute sodium hydroxide. X reacts with dilute sulfuric acid but Y does not react. Y reacts with aqueous sodium hydroxide but X does not react. which type of oxide are X and Y ?
Answer:
c
Explanation:
x basic and metallic while y is acidic
The study of chemicals is called chemistry.
The correct answer is B.
The compound which has oxygen in it is called oxide. According to the question, the element is react with the acid and base.
The X only reacts with the acidic compound but not basic compound hence the element X is basic in nature. while Y only reacts with the basic compound, not X, hence the Y element is acidic in nature.
Therefore, the correct answer is B.
For more information, refer to the link:-
https://brainly.com/question/14698383
what happens when a copper vessel is exposed to moist air for long? please answer fast
Answer the following questions.
Q1. How are solids, liquids and gases similar and different from each other?
________________________________________________________________________
________________________________________________________________________
9
Q2. Differentiate mass from volume.
________________________________________________________________________
________________________________________________________________________
Answer:
Q1: Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
Q2: Mass is how much stuff something is made of. Volume is how much space an object takes up.
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:
An example of a binary compound is
a.
potassium chloride
b.
ammonium chloride
potassium chlorate
ammonium chlorate
Answer:
a. KCl
Explanation:
a. KCl - made of 2 elements
b. NH4Cl
c. KClO3
d. NH4ClO3
6. Which change to a population would cause
increased competition among
its members?
SC.7.L.17.3
ES
an increase in population size
B a decrease in population size
© an increase in predation on the
population
D an increase of disease in the population
Answer:
B
Explanation:
Because I said so
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.
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
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: