The answer is
C) mole ratio
What is the percent composition of barium in barium chloride?
Answer:
The percent composition of barium in barium chloride is 65.9%
Explanation:
percent composition = molar weight of barium/molar weight of barium chloride x 100
from periodic table the molar weight of barium = 137.3
and the molar weight of BaCl2 = 137.3 +( 35.5 x 2)=208.3
% composition is therefore = 137.3/208.3 x 100=65.9%
how can we use models to classify states of matter and the changes it undergoes
Answer:
Matter can exist in one of three main states: solid, liquid, or gas.
Solid matter is composed of tightly packed particles.
Liquid matter is made of more loosely packed particles.
Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume.
Explanation:
Dental crown: Uranium-234 is used to make dental crowns appear brighter. The alpha decay of uranium-234 produces what isotope?
Answer:
Lithium has two naturally occurring isotopes. Lithium-6 has an atomic mass of 6.015 amu. Lithium-7 has an atomic mass of 7.016 amu. The average atomic mass of lithium is 6.941 amu.
Explanation:
A 0.100 moles of solid carbon dioxide is allowed to sublime in a balloon. The final volume of the balloon is 1.00 L at 300. K. What is the pressure, in atm, of the gas?
The pressure of the carbon dioxide that is allowed to sublime in atm, is 2.463 atm
Data obtained from the question Number of mole (n) = 0.1 mole Volume (V) = 1 L Temperature (T) = 300 KGas constant (R) = 0.0821 atm.L/Kmol Pressure (P) =? How to determine the pressureThe pressure of the gas can be obtained by using the ideal gas equation as illustrated below:
PV = nRT
P × 1 = 0.1 × 0.0821 × 300
P = 2.463 atm
Thus, the pressure of the gas is 2.463 atm
Learn more about ideal gas equation:
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W(OH)2 + 2 HCl → WCl2 + 2 H2O
How many grams of W(OH)2 are needed to react with 150 grams of HCl?
(MM W(OH)2 = 217.855 g/mol) (MM HCl = 36.461 g/mol)
Group of answer choices
448.126 grams HCl
50.209 grams HCl
50.209 grams W(OH)2
448.126 grams W(OH)2
The amount of W(OH)2 needed would be 448.126 g
Stoichiometric calculationFrom the equation of the reaction:
W(OH)2 + 2 HCl → WCl2 + 2 H2O
The mole ratio of W(OH)2 to HCl is 1:2
Mole of 150g HCl = 150/36.461
= 4.11 moles
Equivalent mole of W(OH)2 = 4.11/2
= 2.06 moles
Mass of 2.06 moles W(OH)2 = 2.06 x 217.855
= 448.188g
More on stoichiometric calculations can be found here: https://brainly.com/question/8062886
The symbol of the element with an atomic mass of 207. 2.
Answer:
Polonium-207
………………………
Please brainliest me i am begging you
Which of the following is in the same group as strontium? a Calcium b Chlorine c Xenon d Silver
Answer:
a. Calcium
Explanation:
Strontium and Calcium are both in the same group, Group 2.
Answer:
Calcium and strontium are in the same group.
Group 2a of the perodic table are the alkaline earth metals
00000044m
300000km/s
Both in scientific notation
Answer:
4.4 × 10^-7
3 × 10^5
Explanation:
scmack me wit dat brainliest
What substance would be soluble in water?
A - NH3 because it’s polar
B - BR2 because it’s non polar
C - H2 because it’s polar
D - CO2 because it’s non polar
Answer:
A
Explanation:
Since water is polar, we need for there to be a polar solute. This eliminates options B and D.
Now to choose between A and C, we can look at the compounds mentioned.
For A, NH3 is mentioned, which is a polar substance.
However, for C, H2 is mentioned, which is a nonpolar molecule, contrary to what is stated by the option.
Therefore, A is the answer.
PLEASE HELP ME I NEED YALL!! I WILL MARK U BRAINLIEST PLEASE!!
Balanced equation: C₂H₄ + 3O₂ → 2CO₂ + 2H₂O
O₂ required: 3/1 x moles C₂H₄ = 3/1 x 6.51 = 19.53 moles
Based on the oxidation states of the atoms in this reaction, answer the questions. 4Fe(0) 3O2(0) → 2Fe2(3 )O3(2-) How many electrons does the iron half-reaction lose? How many electrons does the oxygen half-reaction gain? What is the total number of electrons that are moved in this oxidation-reduction reaction?
Answer:
12, 12, 12, edge 2022!
Explanation:
Answer:
How many electrons does the iron half-reaction lose? 12
How many electrons does the oxygen half-reaction gain? 12
What is the total number of electrons that are moved in this oxidation-reduction reaction? 12
Balance the equation:
GC2MmCh2
—
the 2 is a subscript (small)
Answer:
2 Gc + 1 Mm + 3 Ch → 1 Gc2MmCh3
Note:
is this the s'more reaction?
-If not might there be a typo?
- if so, might it be one of these?
2 Gc + M + 2C → Gc2MC22 Gc + Mm + 3C → Gc2MmC3What is the chemical equation of the boiling of water?.
Answer:
Boiling of pure water is not a chemical reaction.
It is a physical change from liquid state to gaseous state.
Explanation:
can use greenhouse gases or wasted heat or by-products as input for process to generate any form of energy (in simple way in small scale as a prototype)
6. If the broken wire of the top branch
is connected, what will be true of the
lightbulbs? sc.6.P.13.1
A All of the bulbs would be lit.
B
None of the bulbs would be lit.
C Only the top bulb would be lit.
D Only the top two bulbs would be lit.
I NEED THIS !!
Answer: When two light bulbs are connected in parallel, which is true? A. The total resistance is less than the resistance of either bulb alone. B. The Voltage provided
Explanation:
Answer:
D. Only the top two bulbs would be lit.
Explanation:
When you connect the top light bulb, both the top and middle light bulbs will be lit. But, the bottom light bulb will not be lit because it is not connected. In order for a light bulb to be lit, it has to be connected on both sides by wire.
< Hope this helps! :)
1. Would a small atom (less than 40 protons) be found in nature if it has the same number of protons and neutrons (1:1 ratio)? Explain.
2. Would a large atom (more than 40 protons) be found in nature if it had the same number of protons and neutrons? Explain.
Answer:
1.Yes, it would be found in nature, 1:1 ratio of proton=neutron.
2.No, since it is more likely for atoms with an atomic number greater than 50 to have a 1.5:1 ratio.
Explanation:
hope this helps
1. Yes, it would be found in nature, 1:1 ratio of proton=neutron.
2. No, since it is more likely for atoms with an atomic number greater than 50 to have a 1.5:1 ratio.
Would a large atom (more than 60 protons) be found in nature if it has the same number of protons and neutrons?No, since it is more likely for atoms with an atomic number greater than 50 to have a 1.5:1 ratio.
Why is the neutron to proton ratio so important?The ratio of neutrons to protons (n/p) is a successful way of predicting nuclear stability. This ratio is close to 1 for atoms of elements with low atomic numbers (of less than about 20 protons). The n/p ratio steadily increases as the atomic number increases past element 20 (calcium) to about element 84 (polonium).
Learn more about Atoms at https://brainly.com/question/6258301
#SPJ2
In what circumstance will a flash of lightning travel through the sky and touch the ground?
Potential energy is what
Answer:
the energy possessed by a body by its value of its position relative to others, stresses within itself, electric charge, and other factors.
Explanation:
What is a total eclipse?
A) When the Sun partially blocks out
the moon.
B) When the moon partially blocks
out the Sun.
C) When the moon blocks out the
Sun entirely.
D) When the Sun blocks out the
moon entirely.
Hope it helps ~
separating mixtures: filtration
hi these are the answers :)
When 0.25 g of the organic compound naphthalene are burned in a bomb calorimeter, the temperature of the water in the
calorimeter increases from 24.00°C to 26.43 °C. The calorimeter's heat capacity is 4.13 kJ/°C. How much heat (9rxn) in kilojoules is
released by the combustion of the naphthalene?
The heat released by the combustion of the naphthalene is mathematically given as
H=2.508975 KJ
What is heat released?
Question Parameters:
0.25 g of the organic compound naphthalene
The calorimeter increases from 24.00°C to 26.43 °C.
The calorimeter's heat capacity is 4.13 kJ/°C
Generally, the equation for the Heat released is mathematically given as
H = mCdT
Therefore
H= mC ( T2 - T1)
H= 0.25*4.13 ( 26.43- 24)
H= 2.508975 KJ
In conclusion, the heat released by the combustion of the naphthalene is
H=2.508975 KJ
Read more about Heat
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What is the molarity of 0. 0688 g CoF2 in 20. 0 mL of solution?
Answer: 0.035 M
Explanation:
Question 12 (4 points)
If there were 40 grams of sodium that reacted with 60 grams of chlorine, how
many grams of sodium chloride formed?
A. 40 grams
B. 60 grams
C. 20 grams
D. 100 grams
Answer:
100grams
Explanation:
law of conservation of mass
if the chemical or whatever, quantity is given then it stay the same in the beginning and the end. Just add them in the end and if something is missing that means you have done something wrong i am just telling for experiment
Is it possible to replace our dependency on fossil fuels with alternative renewable energy's?
Answer:
yes, coal for example produces energy by burning but there are several alternatives such as water or solar which are 2 growing energy sources.
Explanation:
hope this helps!
Calculate the volume of an
object with the following
dimensions:
6.0 cm x 8.0 cm x 2.0 cm
At standard temperature and pressure, what is the volume of one mole of gas?
A. 22.4 liters
B. 0.0821 liters
C. The same as the molar mass of the gas
D. The product of protons, neutrons, and electrons in the gas
Answer:
A. 22.41
Explanation:
goodluck man, just typing a little bit more for the 20 words
Answer:
22.4liters
Explanation: I did it in a quiz.
Gold is one of the first metals extracted from the earth. Explain why
What did John Dalton theorize?
Answer:
Dalton theorized that the law of conservation of mass and the law of definite proportions could be explained using the idea of atoms. He proposed that all matter is made of tiny indivisible particles called atoms, which he imagined as "solid, massy, hard, impenetrable, movable particles.
Explanation:
Explain the three processes of nuclear change and what is produced during as a result of that change PLS HELP
Answer:
I don't know how to do right now
Hydrogen ions and PH
Answer:
the more hydrogen ions present, the lower the pH; conversely, the fewer hydrogen ions, the higher the pH.
