Answers
Explanation:in order for a chemical equation to be balanced the number of atoms of both products and reactants have to be equal.
Related Questions
What is the approximate total number of atoms in 1.0 mole of lithium?
Answers
Answer:
6.0 x 10 to the power of 23
What process can result when liquid water absorbs heat energy A condensation B evaporation C or D precipitation
Answers
Answer:
C.) evaporation
Explanation:
When water absorbs enough heat, it becomes a gas (water vapor). This process is called evaporation.
I hope this helps! :)
The two major types of bonds are ___________________ and _____________________. Electrons are either ________________ or _______________ to fill the last shells of atoms that ions. The ____________________ number of an ion is either positive or negative. When we combine ions we can only combine _____________________ with ____________________ ions. When atoms share electrons they form ____________________ bonds. The electrons involved with bonding, in the last shell that are shared are called____________________ electrons. Three examples of macromolecules are _______________________, ________________________ and ___________________. The four main atoms involved in carbon chemistry are ____________________________.
Answers
Answer:
chemical bonds and covalent bonds
Explanation: covalent bonds are in which the valence electrons density is shared between two atoms and chemical bonds are the connections between atoms in a molecule . electrons can be either free [not attached to any atom] or bound to nucleus of an atom. atom or molecule is a number of an ion which is either positive or negative. when we combine ion we can only combine elements with ionic bonds. when atoms join together , they form chemical bonds without transferring any electrons but they rather share them. copper sulphide are the last shell that are shared with bonding . proteins, carbohydrates, lipids are the example of macromolecules . nucleic acids, lipids, proteins, carbohydrates are the main atoms involved in carbon chemistry.
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The theory of continental drift, a theory of a single, massive landmass that may have broken apart into what we associate with the modern landmasses and major continents was first supported by what significant evidence?
Answers
Answer:
So its a theory by Alfred Wegener is that All land was one big piece of land called pangea in the early 20th century people began to think that land masses can move such as many do just from it being there or natural disasters then going in to more research they found that when putting the continents together it fit like a puzzle and the fact that some fossils were far away from were the same were found
The theory of continental drift, based their theory on several lines of evidence, including the fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
What does the continental drift theory?The continental drift hypothesis states that all the continents were once joined together as one large mass of land, but then the land spread apart and drifted into their current positions.
The hot magma flows in convection currents due to tremendous heat and pressure within the earth. These currents cause the tectonic plates that make up the earth's crust to move.
Thus, The theory of continental drift, based their theory on many lines of evidence, including the fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
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What mass of aluminum is produced by the decomposition of 5.0 kg A l 2O 3? How many moles of oxygen are produced?
Answers
mass of Aluminum produced = = 2.647 kg
moles of Oxygen = 73.53 moles
Further explanationGiven
5.0 kg Al₂O₃
Required
moles of Oxygen
Solution
The aluminum oxide gets decompose into aluminum and oxygen gas.
Reaction :
2Al₂O₃(s)⇒ 4 Al(s) + 3O₂(g)
mol of Al₂O₃(MW=102 g/mol) :
= mass : MW
= 5000 g : 102 g/mol
= 49.02 moles
From the equation, mol ratio of Al₂O₃ : O₂ = 2 : 3, sol mol O₂ :
= 3/2 x mol Al₂O₃
= 3/2 x 49.02
= 73.53 moles
mol Al :
= 4/2 x mol Al₂O₃
= 2 x 49.02
= 98.04 moles
Mass Al :
= mol x Ar Al
= 98.04 x 27 g/mol
= 2647.08 g
= 2.647 kg
What material would you use to replace synthetic materials and make the hot/cold pack environmentally friendly?
Answers
Here are some long-lasting plastic alternatives available right now.
Stainless steel. Tough and easy to clean, stainless steel options for reusable food and beverage storage have multiplied in recent years. ...
Glass. ...
Platinum silicone. ...
Beeswax-coated cloth. ...
Natural fiber cloth. ...
Wood. ...
Bamboo. ...
Pottery and Other Ceramics.
In Mg3(PO4)2 there are
Answers
In Mg3(PO4)2 there are 13 atoms
Further explanationGiven
Mg3(PO4)2 compound
Required
The composition of the compound
Solution
Molecular formula (MF) is a formula that shows the number of atomic elements that make up a compound.
In the compound Mg3 (PO4) 2, there are 3 types of atoms, namely Mg, P, and O
The number of each of the atoms:
Mg = 3 atoms
P = 2 atoms
O = 8 atoms
Total atoms in the compound = 3 + 2 + 8 = 13 atoms
Balance the equation for ethane C3H6 burning in oxygen to form carbon dioxide and steam. _____C3H6 + ____ O2 ---> CO2 + ____H2O
Answers
Answer:
2C3H6 + 9 O2 ---> 6 CO2 + 6 H2O
Explanation:
Two gases are combined and sealed in a 2.0 L container. The 3.0 L of argon gas and 1.0 L of xenon gas each exert 1.00 atm pressure on the walls of their container.
(a) Calculate the partial pressure of each gas in the 2.0 L container.
(b) What is the total pressure in the 2.0 L container?
Answers
Answer:
Unless they chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each individual gas in a mixture exerts the same pressure that it would exert if it were present alone in the container . The pressure exerted by each individual gas in a mixture is called its partial pressure.
Explanation:
Name three things that are matter and why
Answers
goodluck w everything else , hope this helps
^-^
just take it for free,
Answers
Answer:
Thanks bro, I will gladly take them for free
which is NOT balanced?
WILL GIVE BRAINLIEST
Answers
Answer:the third one hope this helped u may i plz get brainlist only if u wanna give me brainlist though have an good day kind sir or ma'ma.
Explanation:
Define conversion factor
Answers
After a lightning storm, the Rodriguez family notices the TV no longer works.
What probably caused this malfunction?
A. Power from the TV was pulled into the ground by the lightning.
B. A power surge burned an electric component of the TV.
C. The lightning sucked power from the TV.
D. The surge protector sucked power from the TV.
Answers
Answer:
B
Explanation:
A P E X
After a lightning storm, the Rodriguez family notices the TV is no longer working because a power surge burned an electric component of the TV. The correct option is B.
What is lightning?Lightning is a natural phenomenon that occurs when there is a collision of negative and positive charged particles. It appears as light or spark of electricity into the earth. It shines and affects the eyes if directly seen.
Lightning occurs when there is thunder or rain, lightning causes destruction to the earth, the houses, trees, and people are also impacted by this. The TV was not working because there was a short circuit due to lightning.
Thus, the correct option is B. A power surge burned an electric component of the TV during a lightning storm.
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Hydration is a specific kind of _______.
a.) dissociation
b.) dissolution
c.) ionization
d.) solvation
Answers
Which victim requires CPR?*
Unresponsive, has strong pulse, and is breathing
unresponsive, no normal breathing and no pulse
Responsive, has a pulse, and having trouble breathing
O Responsive, having trouble breathing, and has a low pulse
Answers
Answer:
Responsive, having trouble breathing, and has a low pulse
Explanation:
Which is smaller: a
chromosome or a gene?
Answers
Answer:
A gene is smaller.
Explanation:
A gene is actually inside of a chromosome, therefore it's a smaller entity.
;
Genes are contained in chromosomes, which are in the cell nucleus. A chromosome contains hundreds to thousands of genes.
Answer: genes
Explanation: Genes are smaller because they are in the chromosomes.
(05.02 LC)
How many moles of each element are in one mole of Sr(HCO3)2? (3 points)
Answers
Answer:
The number of moles of Sr in one mole of Sr(HCO₃)₂ = 1 mole
The number of moles of H in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of C in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of O in one mole of Sr(HCO₃)₂ = 6 moles
Explanation:
The given chemical formula of the compound is Sr(HCO₃)₂
The number of atoms of Sr in the compound = 1
The number of atoms of H in the compound = 2
The number of atoms of C in the compound = 2
The number of atoms of O in the compound = 6
The number of atoms of each element present in each formula unit of Sr(HCO₃)₂ is proportional to the number of moles of each atom in one mole of Sr(HCO₃)₂
Therefore;
The number of moles of Sr in one mole of Sr(HCO₃)₂ = 1 mole
The number of moles of H in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of C in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of O in one mole of Sr(HCO₃)₂ = 6 moles.
Answer:
the answer above is correct
Explanation:
i took the test
Voltalc cells produce a positive overall charge. What does this indicate?
OA. The reaction is likely to be endothermic.
OB. The reaction is spontaneous.
OC. The reaction is not likely to occur.
OD. The reaction is not spontaneous.
Answers
Answer:
The reaction is spontaneous.
Explanation:
If voltaic cell show positive charge it means reaction is spontaneous taking by itself.
Answer:
B. The reaction is spontaneous.
Explanation:
Edmentum
PLEASE HELP ME I DON'T UNDERSTAND PLEASE HELP THIS IS MY LAST QUESTION I WILL GIVE BRAINLIEST
You have learned about the common characteristics of inner planets and outer planets. Explain how these
characteristics are verified observation and not just the options of scientists.
Answers
Answer:
Because they all have different characteristics and they are not just things that the scientists say. they are all different but some of them have the Same charateristics
A hot plate, a large beaker of water, and grains of rice are used in a class demonstration. When the water begins to boil, the rice moves in a circular pattern. The model demonstrates
Answers
Answer:radiation
Explanation:
When the water begins to boil the rice moves in a circular pattern which means radiation will be the correct answer
When 4.15 grams of silver nitrate is reacted with 1.11 grams of iron(III) chloride, which best represents the amount of silver chloride produced?
Answers
Answer:
The mass of silver chloride produced = 2.202 g
Explanation:
Equation of the reaction is given below
3AgNO₃(aq) + FeCl₃(aq) ----> 3AgCl(s) + Fe(NO₃)₃(aq)
molar mass of AgNO₃ = 170 g/mol
molar mass of FeCl₃ = 233.5 g/mol
molar mass of AgCl = 143.5 g/mol
3 moles of silver nitrate reacts with 1 mole of iron (iii) chloride to give 3 moles of silver nitrate
4.15 grams of AgNO₃ = 4.15/170 = 0.0244 moles of AgNO₃
1.11 grams of FeCl₃ = 1.11/233.5 = 0.0047 moles of FeCl₃
mole ratio of AgNO₃ to FeCl₃ = 0.0244/0.0047 = 5 : 1
therefore, FeCl₃ is the limiting reactant
0.0047 moles of FeCl₃ reacting will produce 0.0047 * 3 moles of AgCl = 0.0141 moles of AgCl
0.0141 moles of AgCl = 0.0141 * 143.5 g of AgCl = 2.02 g of AgCl =
Therefore mass of silver chloride produced = 2.202 g
a) How much energy would be required to melt 500 grams of ice at 0°C to water at 0°C?
Answers
Heat required = Q = 40 kcal
Further explanationGiven
mass of 500 g ice
Required
Heat required
Solution
The heat to change the phase can be formulated :
Q = m.Lf (melting/freezing) Q = m.Lv (vaporization/condensation)Lf=latent heat of fusion
Lv=latent heat of vaporization
Lf for water = 334 kj/kg=6.01 kJ/mol = 80 cal/g
Phase change(ice to water)
Q= 500 g x 80 cal/g
Q = 40 kcal
HELP PLZ ASAP
will give brainliest
Answers
Answer:
I believe that it would be the third option down.
Explanation:
The thermal energy is in constant motion in the COOLER room, and when the desired temperature in the room is reached, it stops.
A farmer selectively breeds tomatoes to be shipped to grocery stores across the United States. Which of the following genetic traits would it be most important to selectively breed in the tomatoes?
A.The spoiling time of the tomatoes
B.The flavor of the tomatoes
C.The appearance of the tomatoes
D.The size of the tomato plants' leaves
Answers
Answer:
D
Explanation:
It would definitely affect size because breeding will change that trait
In selectively breeding tomatoes to be transported around the united states, one must consider the spoiling time of the tomatoes.
Tomatoes are vegetable fruits that are commonly consumed across the world and are very important because of their nutritive value. Often times, tomatoes are regarded as perishable goods because of their short shelf life.
In selectively breeding tomatoes to be transported around the united states, one must consider the spoiling time of the tomatoes.
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Given the following data, calculate the densities of a carbon-14 nucleus and a carbon-14 atom. Particle Mass Electron kg Proton kg Neutron kg The diameter of the nucleus is about cm and electrons move about the nucleus at an average distance of about cm away from it. (a) Calculate the density of a carbon-14 nucleus. Density
Answers
if you have 3g of sodium and 4g of chlorine what is the total mass of sodium chloride
Answers
Answer:
7g
Explanation:
Given parameters:
Mass of sodium = 3g
Mass of chlorine = 4g
Unknown:
Total mass of sodium chloride = ?
Solution:
This problem entails the direct application of the law of conservation of mass. According to this law, it states that "matter is neither created nor destroyed in the course of a chemical reaction".
So, when sodium and chlorine combines to form sodium chloride, to are expect to produce substance with a mass which adds up to the sum of the reactants;
Mass of sodium chloride = mass of sodium + mass of chlorine
= 3g + 4g
= 7g
A plant grows at the same rate as wheat plant 2. If the plant is 4.2 cm tall, calculate how old the plant is. Use the corrected trendline for wheat plant 2.
Answers
Answer:
The correct response is "3.127 weeks". A further explanation is given below.
Explanation:
As we know,
y = 1.3431x
Use, y = 4.2 cm
Now,
⇒ [tex]y = 1.3431x[/tex]
On substituting the values of y, we get
⇒ [tex]4.2=1.3431x[/tex]
⇒ [tex]x = \frac{4.2}{1.3431}[/tex]
⇒ [tex]=3.127 \ weeks[/tex]
If the number of atoms of each element on the reactant side of an equation is equal to the number of atoms of each element on the product side of the equation, the equation is _____.
A.)endothermic
B.)equal
C.)balanced
D.)exothermic
Answers
in a hotel breakfast bar you see an older woman sticking a fork into a toaster to remove a piece of toast. You wamn her not to do that and she says. "You know, I always
wondered why fortes conduct electricity so well" As an astute chemistry student how would you explain it to her? Make sure you provide a relationship to
electronegativity proton pull and electron distribution in your answer
Answers
Answer: I guess have to like explain to her why to not stick the fork into the toaster.
Explanation:
Hope this helps
Answer:
its just how would you explain how it happens how the electricity passes through the fork but in a easy understandable way
Explanation:
for example... dont do that because......................then will go through the fork then to your arm and will cause....................... then you die
