in a chemical reaction, conservation of mass is demonstrated by proving that the mass of the reactants is___ the mass of the products.
Answer:
equal to
Explanation:
The law of conservation of mass tells us that during a chemical reaction, matter cannot be created or destroyed, but it can change from one form to another. This means that while atoms can rearrange themselves into new substances during a reaction, the mass of the reactants and products will be the same.
Mechanical layers of the earth is divided by what they are made of. True or False?
Science 6th grade
Which body systems help to exchange oxygen and carbon dioxide?
A. respiratory and digestive
B. circulatory and digestive
C. respiratory and circulatory
D. digestive and excretory
A 951g sample of carbon steel with a specific heat capacity of .49j is heated to 673k and quenched in oil. The steel cools to 523k. assuming there is no heat lost to surroundings, calculate the heat absorbed by oil.
Answer: all I know it’s not -31.5 for ppl taking the k12 test
Explanation: I took the test
Answer:
its 69.9
Explanation:
yw
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:
_____ C8H8 + _____ O2 _____ CO2 + _____ H2O
What do you want for the answer the balance equation?
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:
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 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).
9. Which of these substances have a higher specific heat, and why?
A. copper; hydrogen bonding
B. copper, metallic bonding
C. water; hydrogen bonding
D. water; metallic bonding
Answer:
C
Explanation:
water has the highest specific heat capacity of any liquid,as a hydrogen bond
research zhenyis achievements in the world of science. what is she most known for? i jeed 3 facts about her life.
Answer:
She breached the feudal customs of the time, which hindered women's rights, by working to educate herself in subjects such as astronomy, mathematics, geography, and medicine. She was well known for her contributions in astronomy, mathematics, and poetry. Zhenyi was a famous female scientist from the Qing dynasty.
Hope this helps have a good day. :)
The Pi Song
Lyrics. And now
AsapSCIENCE presents-
100 digits of π
3.14159, this is π
Followed by 2-6-5-3-5-8-9
Circumference over diameter
7-9, then 3-2-3
OMG! Can't you see?
8-4-6-2-6-4-3
And now we're on a spree
38 and 32, now we're blue
Oh, who knew?
7, 950 and then a two
88 and 41, so much fun
Now a run
9-7-1-6-9-3-9-9
Then 3-7, 51
Half way done!
0-5-8, now don't be late
2-0-9, where's the wine?
7-4, it's on the floor
Then 9-4-4-5-9
2-3-0, we gotta go
7-8, we can't wait
1-6-4-0-6-2-8
We're almost near the end, keep going
62, we're getting through
0-8-9-9, on time
8-6-2-8-0-3-4
There's only a few more!
8-2, then 5-3
42, 11, 7-0 and 67
We're done! Was that fun?
Learning random digits
So that you can brag to your friends. (XP this is to weird as hell)
3.14159, this is π
Followed by 2-6-5-3-5-8-9
Circumference over diameter
7-9, then 3-2-3
OMG! Can't you see?
8-4-6-2-6-4-3
And now we're on a spree
38 and 32, now we're blue
Oh, who knew?
7, 950 and then a two
88 and 41, so much fun
Now a run
9-7-1-6-9-3-9-9
Then 3-7, 51
Half way done!
0-5-8, now don't be late
2-0-9, where's the wine?
7-4, it's on the floor
Then 9-4-4-5-9
2-3-0, we gotta go
7-8, we can't wait
1-6-4-0-6-2-8
We're almost near the end, keep going
62, we're getting through
0-8-9-9, on time
8-6-2-8-0-3-4
There's only a few more!
8-2, then 5-3
42, 11, 7-0 and 67
We're done! Was that fun?
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:
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.
Use the data to calculate the percentage remaining for samples Y and Z to the nearest tenth of a percent.
The percentage remaining for Sample Y is ___
percent.
The percentage remaining for Sample Z is ___
percent.
Answer:
Explanation:
y is 98
Answer:
Y is 98.0 percent
Z is 94.7 percent
Explanation:
I just took it. hope it helps
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:
brainly.com/question/17217225
#SPJ2
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
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
PLEASE HELP CHEMISTRY
Answer:
charge of copper.. ........mark me brainlest
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.
Devices that allow you to do work in an easier way.
Answer:
The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw, and the wedge, although the latter three are actually just extensions or combinations of the first three.
Answer:
The most important devices that made work easier are:
The wheel
The axle
The lever
The inclined plane
The pulley
The screw
The wedge
these are known as the the "six simple machines"
can people with different parents still have traits in common?
.......................yes...............ofc.......
HAHAHAHAHAAHAHAHAHA help
Answer:
the sun
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.
Taya observed a plant that is small and grows close to the ground because it does not have the water transport
structures required to grow taller.
Which plant phylum did this plant most likely belong to?
O conifers
Oferns
O mosses
O flowering plants
Answer:
O mosses
Explanation:
How are air temperature and humidity related? Colder air can hold more water vapor than warmer air. Warmer air and colder air can hold the same amount of water vapor. Warmer air can move faster than colder air. Warmer air can hold more water vapor than colder air.
Answer:
Warmer air can hold more water vapor than colder air.
Explanation:
Weather can be defined as the atmospheric conditions of a particular area over a short period of time.
The elements of weather include precipitation, wind, temperature, atmospheric pressure, relative humidity, cloud, and wind speed.
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object (body).
On the other hand, humidity refers to the concentration (amount) of water vapor that is present in the air. It is high when there's a lot of water vapor in the air and low when the level of water vapor is small.
The relationship between air temperature and humidity is that warmer air can hold more water vapor than colder air because as the air cools, its molecules move closer together while the molecules move farther apart as the air become hot.
Additionally, at constant humidity, relative humidity is inversely proportional to temperature i.e as the temperature decreases, relative humidity increases.
The part of the atom that is free to move between materials is???
Answer:
Electrons
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%.
Find the mass, in grams, of 1.00 x 1023 molecules of CO2
Answer:
Cosimo
Explanation:
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)