Answer:
we need the picture
Explanation:
Consider the atomic model of the element chlorine. Which elements will bond ionically with chlorine such that the formula would
be written as XCL2?
-0
A)Hydrogen
B)Magnesium
C)Oxygen and Sulfur
D)Lithium and Sodium
E)Barium and Calcium
Answer:
it is magnesium and barium and calcium
Magnesium, Barium, and Calcium will bond ionically with chlorine such that the formula would be written as MgCl₂, BaCl₂, and CaCl₂.
What are ionic compounds?Ionic compounds can be explained as crystalline solids which are formed by packing of opposite charge ions due to the interactions of the ions. An Ionic compound is produced when metal reacts with non-metal.
In ionic compounds, oppositely charged ions are held by ionic bonds due to the interactions between ions. The ions are formed from atoms by gaining or losing electrons in order to attain their noble gas configuration.
A cation in ionic compounds is the electropositive ion and has the tendency to give away valence electrons. Similarly, anions in ionic compounds are electronegative ions and have a tendency to gain electrons.
The chlorine needs one electron to complete its valence shell. Therefore two chlorine will combine with a divalent cation. Therefore Magnesium, Barium, and Calcium exist as Mg⁺², Ba²⁺ , and Ca²⁺.
Learn more about ionic compounds, here:
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What do waves carry from place to place?
A Energy, but not matter
B Energy and matter
C Matter, but not energy
D
Nelther energy nor matter
In context to the question after evaluating every possible fact we conclude that waves carry energy and never carry matter, towards a dignified place to another.
This is considered true concerning all types of waves involving the sound waves, water waves, light waves, radio waves, microwaves, and x-rays. Then the correct answer for the required question is Option A.
Furthermore, there are different and distinguished types of waves. For instance
Mechanical waves: These comprises of waves that require a medium to complete the given course. Instances involve sound waves and water waves.Electromagnetic waves: These consist of wave’s generally don’t require a medium to complete a course . Instances include radio waves, microwaves, and light waves.Matter waves: These involve waves that are associated with particles such as electrons and atoms.To learn more about mechanical waves
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Find the mass, in grams, of 1.00 x 1023 molecules of CO2
Answer:
Cosimo
Explanation:
6 minutes ago • Chemistry • High School
Ethanol (C2H5OH) is produced from the fermentation of
sucrose in the presence of enzymes.
AC
C12H22011(aq) + H2O(g) 4 C2H5OH(1) + 4 CO2(g)
Determine the theoretical yield and the percent yields of ethanol if 720.g
sucrose undergoes fermentation and 323.0 g ethanol is obtained.
Answer:
387.62, 83.33%
Explanation:
Given:
[tex]C_{12} H_{22} O_{11}(aq) + H_2O(g) -4 C_2H_5OH(1) + 4 CO_2(g)[/tex]
720g of Sucrose produces 323g ethanol.
Theoretical yieldTo calculate the theoretical yield, you can use a mole-to-mole ratio. Assuming that there is excess H2O, you can calculate the theoretical yield like so:
[tex]720g C_{12}H_{22}O_{11}*\frac{1 mol C_{12}H_{22}O_{11}}{342.3g} *\frac{4mol C_2H_5OH}{1mol C_{12}H_{22}O_{11}} *\frac{46.07g}{1molC_2H_5OH} =387.62g[/tex]
Percent YieldAn easy way to find percent yield is
[tex]\frac{Actual }{Theoretical} *100[/tex]
So, plug the numbers in.
[tex]\frac{323.0}{387.62} *100 = 83.33%[/tex]
So, the percent yield is 83.33%.
Using the periodic table determine the number of neutrons in 16O
We often denote oxygen as 16O8 where 16 is the mass number and 8 is the atomic number.
number of neutrons=16-8=8
How do you study things you cannot see
Answer:
For things that we can not directly observe, we can use indirect observation – which studies the consequences of an action or process. For example, we cannot see the Earth's magnetic field, but we detect it by its effect on a compass.
Ice cream
Air, Cone:
Heat is :
the system
The kinetic energy is
The potential energy is
:: Surroundings
:: System
.: Entering
:: Exiting
.: Increasing
:: Decreasing
Answer:
icecream-decreasing
air,cone-surounding
heat is -entering-the system
the potential energy-increasing
Which of the following substances is a base?
5 points
a. Vinegar
b. Ammonia
c. Lemon juice
d. Distilled water
Answer:
D
Explanation:
water is used to delude just about anything
Explain how the patterns of differences between a physical and chemical change are explained by changes at the scale of atoms and molecules (interacting differently, rearranging, etc?)
Answer:
A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
Explanation:
SHOW ALL WORK AND INCLUDE UNITS
How many kilojoules of heat are released when 0.72 mole of oxygen gas are used to combust methane?
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (ℓ) + 890kJ
Answer:
0.72 mole of oxygen would produce 320.4 kJ of heat.
Explanation:
CH₄ (g) + 2O₂ (g) → CO₂ (g) + 2H₂O (ℓ) + 890kJ
According to the equation,
2 moles of O₂ produces 890 kJ of heat
So, 0.72 moles of O₂ will produce:
Therefore, 0.72 moles of oxygen would produce 320.4 kJ of heat.
What is the new volume if a piston starts at 25ml and 900 mm Hg and the pressure decreases to 750 mm Hg?
What is the starting pressure if an inner tube starts at 40L and then the volume decreases to 30L after the pressure is increased to 20 psi
What is the starting temperature if a balloon increases from 50ml to 70ml and the final temperature was 350K?
If a bubble cools from 300K to 200K and the final volume is 18ml, what volume did it start at?
Answer:
I screenshot and expained here
https://screenshot.best/A7QIKV.lnk
Explanation:
Which is the correct molar mass for the
compound aluminum carbonate, Al2(CO3)3?
Answer:
molar mass for the
compound aluminum carbonate, Al2(CO3)3
233.99 g/mol
How many moles of O2will be produced from 6.2 moles of water?
Answer:
I hope This will help you....and please mark me as Brilliant
Explanation:
The formula, H2O tels us that there are the same number of moles of Oxygen as there are of water. The (understood )molecular coefficient of H2O is 1. The (understood ) coefficient of O in the formula is also 1. The number of moles of oxygen is the same as the number of moles of water. This is moles of oxygen atoms. If the question wants moles of oxygen gas, O2, then it will be half as many I think that is what they want, so I would answer 3.1 moles of O2.
If 5 moles of nitrogen are used how many moles NH3(g) are produced
Answer:
I hope this will help you....and please mark me as Brilliant
Explanation:
1 moles N2 you can produce 2 moles of NH3, (see equation)
5 mol N2 gives 10 mole NH3
molar mass of NH3 = 17.03 g/mole
10 moles NH3 is 10 * 17.03 gram = 170.3 gram NH3.
Balanced equation:
N2(g) + 3 H2(g) → 2 NH3(g)
Kayla learned that when you play with the Soccket for 30 minutes it gives you 3 hours of light. She thinks that rolling the ball slowly with her baby brother for 30 minutes will give her the same amount of energy as kicking it in a game of soccer for 30 minutes. Do you agree or disagree? State your claim and use evidence from what you've learned about speed and energy to explain your answer.
Answer:
disagree it wont be the same momentum
Explanation:
cuh
its gelatin and a fruit cup the same (its for a project)
Answer:
No
Explanation:
Gelatin is a substance that makes jello, and a fruit cup is a cup full of fruit
Answer:
no
Explanation:
SHOW ALL WORK AND INCLUDE UNITS
How much heat is released when 1.4 mol of hydrogen fluoride are produced?
H2 (g) + F2 (g) → 2HF (g) + 536kJ
Answer:
+375.2 KJ.
Explanation:
The balanced equation for the reaction is given below:
H₂ + F₂ —> 2HF ΔH = +536 KJ
From the balanced equation above,
2 moles of HF required +536 KJ .
Finally, we shall determine the heat required to produce 1.4 mol of hydrogen fluoride, HF. This is illustrated below:
From the balanced equation above,
2 moles of HF required +536 KJ .
Therefore, 1.4 moles of HF will require = (1.4 × 536)/2 = +375.2 KJ
Thus, +375.2 KJ of heat energy is required.
Why is it not advisable to light a charcoal stove in limited supply of oxygen.
Answer:
Due to the limited supply of oxygen, carbon (ii) oxide, a poisonous gas, is produced instead of carbon(iv) from the burning charcoal stove and this may result in death when inhaled.
Explanation:
When charcoal is burnt in a plentiful supply of oxygen, the combustion products is carbon (iv) oxide (carbon dioxide) which is not very toxic to the human body. The equation of the reaction is given below:
C + O₂ ----> CO₂
However, in a limited supply of oxygen gas, the combustion product is carbon (ii) oxide. The equation of the reaction is given below:
2C + O₂ ----> 2CO
Carbon (ii) oxide is a colorless and odorless gas which unlike carbon (iv) oxide is very toxic to human and results in fatality when inhaled in even small doses for a few minutes. Its mechanism of action of toxicity is that it competes with oxygen for transport in the body by hemoglobin. It combines irreversibly with hemoglobin to form carboxyhemoglobin, thereby depriving tissues and cells the oxygen they need. This results in death of the cells and tissues as well as of the whole organism. Thus, it is not advisable to light a charcoal stove in limited supply of oxygen.
If using a microscope allows you to see substances in a mixture, that mixture is _____
Answer:
That means that mixture is HeteroGeneous.
Explanation:
Hope this Helps!
define the term albedo
Answer:
is a measure of how much light that hits a surface is reflected without being absorbed.
Explanation:
it is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that reflects all incident radiation
Answer:
The proportion of the incident light or radiation that is reflected by a surface, typically that of a planet or moon.
Mechanical layers of the earth is divided by what they are made of. True or False?
Science 6th grade
The part of the atom that is free to move between materials is???
Answer:
Electrons
Explanation:
4NO + 3O2 + 2H2O = 2.4 moles of NO 2.4 moles of O2 and 2.4 moles of H2O react and 2.0 moles of HNO3 are recovered from the reaction. what is the percent yield of this reaction ?
Answer:
83%
Explanation:
Percent yield is 100 times the ratio between actual yield (2.0moles HNO₃) and theoretical yield. To find theoretical yield:
As you can see in the reaction:
4NO + 3O₂ + 2H₂O → 4HNO₃
4 moles of NO are required when 3 moles of O₂ and 2 moles of H₂O reacts. As equal moles of each reactant are added, the limiting reactant is NO because is the substance that requires more moles to react.
2.4 mol NO produce 2.4 mol HNO₃-Because 4 moles of NO produce 4 moles of HNO₃. That means theoretical yield is 2.4 moles and percent yield is:
2.0 moles / 2.4 moles * 100 = 83%
Aqueous sulfuric acid H2SO4 will react with solid sodium hydroxide NaOH to produce aqueous sodium sulfate Na2SO4 and liquid water H2O. Suppose 17. g of sulfuric acid is mixed with 7.07 g of sodium hydroxide. Calculate the maximum mass of sodium sulfate that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
Answer:
ok let me study into this first
Explanation:
I'll answer this in a few
Answer:
Maas of sodium sulphate produced = moles×molar mass=0.06×142=8.52 gmoles\times molar\ mass=0.06\times 142=8.52\ gmoles×molar mass=0.06×142=8.52 g
Explanation:
Reaction between them is given by-
2NaOH +H2SO4 → Na2SO4 +2H2O2NaOH\ \ +H_2SO_4\ \to\ Na_2SO_4\ \ +2H_2O2NaOH +H2SO4 → Na2SO4 +2H2O
Molar mass of H2SO4=98 g mole−1H_2SO_4=98\ g\ mole^{-1}H2SO4=98 g mole−1
Moles of sulphuric acid taken = 5.8898=0.06 mole\frac{5.88}{98}=0.06\ mole985.88=0.06 mole
Moles of sodium hydroxide taken = 6.240=0.155 mole\frac{6.2}{40}=0.155\ mole406.2=0.155 mole
here sulphuric acid is limiting agent so
reaction will proceed according to sulphuric acid
0.06 mole HSO4 will produce same amount of Na2SO40.06\ mole\ H_SO_4\ will \ produce\ same\ amount\ of \ \ Na_2SO_4\\0.06 mole HSO4 will produce same amount of Na2SO4
How many kinds of horses are there in the world? Give me a real number, plz its for a magazine article!
Answer:
784
Explanation:
Answer:
784 horse breeds
Examine the diagram that shows the levels of organization of an organ system.
αμματα
1
2
3
If level 2 becomes diseased, what is a possible consequence?
The organ system will generate more cells to create a new organ to replace the diseased component.
The organ will fail to function properly, affecting the organ system and consequently the organism.
The cells will bypass creating tissues, creating the organ directly to limit the spread of the disease to the organism.
The organ will temporarily shut down until the disease is repaired with the replication of new cells.
Answer:
lol
Explanation:
Answer:
I think its B maybe
Explanation:
HAHAHAHAHAAHAHAHAHA help
Answer:
the sun
Explanation:
PLEASE HELP CHEMISTRY
Answer:
charge of copper.. ........mark me brainlest
Instructions:
Balance chemical equations on bach side by multiplying the molecular or ionic compounds by a
coefficient.
_C3_H8
+
O2
CO2
H2O
Answer: the answer is b
Explanation:
Answer:
Explanation:
B answer
How many moles of sodium are required in order to produce 5 moles of
sodium chloride?
Answer:
5 moles of Sodium are required to produce 5 moles of Sodium Chloride.
Explanation:
I am assuming you were not given an equation and this is a synthesis reaction.
Let's begin by writing a balanced chemical equation for the synthesis of sodium chloride.
2Na⁺ + Cl₂⁻ -> 2NaCl
Since Cl₂ exists as a diatomic molecule, we must have 2 +1 charges from Na to balance out the 2 -1 charges of Cl₂ (-1 for each Cl atom). This will then form 2 moles of NaCl.
To produce 5 moles of sodium chloride, we can multiply the entire equation by 2.5. This will result in:
5Na⁺ + 2.5Cl₂⁻ -> 5NaCl
The stoichiometric ratios of this new equation is:
5 Na: 2.5 Cl₂: 5NaCl
5 moles of sodium (Na) are required to produce 5 moles of sodium chloride (NaCl).