Answer:
Explanation:
mass of carbon in 10.27 g of CO₂ = 12 x 10.27 / 44 = 2.80 g
mass of hydrogen ( H ) in 3.363 g of H₂O = 2 x 3.363 / 18
= .373 g
These masses would have come from the sample of 6.165 g .
Rest of 6.165 g of sample is oxygen .
So oxygen in the sample = 6.165 - ( 2.8 + .373 ) = 2.992 g
Ratio of C , H , O in the sample
2.8 : .373 : 2.992
C: H : O : : 2.8 : .373 : 2.992
Ratio of moles
C: H : O : : 2.8/12 : .373/1 : 2.992 / 16
C: H : O : : .2333 : .373 : .187
C: H : O : : .2333/.187 : .373/.187 : .187/.187
C: H : O : : 1.247 : 1.99 : 1
C: H : O : : 5 : 8 : 4 ( after multiplying by 4 )
Hence empirical formula
C₅H₈O₄
Molecular formula ( C₅H₈O₄ )n
n ( 5 x 12 + 8 x 1 + 4 x 16 ) = 132
n x ( 60 + 8 + 64 ) = 132
n = 1
Molecular formula = C₅H₈O₄.
wright it in 500 words Submit your persuasive essay about nuclear power. Remember to proofread your work before submitting.
Answer:
Explanation:
Introduction Paragraph. Hook. Background Points. Thesis Statement.( done)
Body Paragraph. Topic Sentence. Supporting fact 1. Supporting fact 2. Transition Sentence.(done)
Conclusion Paragraph. Re-statement of Thesis. Summary of Main Point. Challenge to the Reader.( done)
help! help! plz Why do two H atams combine to Form the molecule H2 while He remains monotonic?
How atoms interact with other atoms is largely dependant on the number of electrons on its outermost layer. The electrons on this layer are called valence electrons.
As you might know, atoms have their electrons arranged in layers/shells, starting at k, l m, n etc. Each layer has a maximum number of electrons it can accommodate, with the outermost one being the valence shell. The first layer (k) can accomodate 2 electrons, the second one (l) can accomodate 8, as can the third one (m) etc.
As a rule of thumb, most atoms don't like being alone. These atoms have a valence shell that isn't saturated. This is the case for hydrogen(1), with one free slot in its outter shell.
However, atoms like helium are a bit different. They are inert, and don't need to bond with other atoms. This is because their valence shell is saturated. In this case, helium saturated the k shell with 2 electrons. Helium in this form will not form bonds.
However, hydrogen is still out there looking for buddies. Hydrogen will bind with any other atom with a free electron. Being extremely common, it's likely that said atom will be another hydrogen.
However, another common example would be for 2 hydrogens to bond with one oxygen, forming h2O (oxygen can form 2 bonds)
Conclusion : helium is inert and will not interact with other atoms. Hydrogen is not, and thus needs to bond with other atoms.
what happens to ammonia when reacts with heated sodium?
Answer:
When dry ammonia is passed over heated sodium in absence of air, the product formed is sodium amide. - When dry ammonia is passed over heated sodium in absence of air, sodium amide is produced. - Sodium amide aka sodamide is mainly used as a strong base in organic chemistry.
Explanation:
Hotter things have more energy than colder things. this is science middle school
Answer:
true
Explanation:
Hotter things have more heat energy than colder things. That's because the atoms or molecules move around faster in hot things (red, right) than they do in cold things (blue, left). ... The more heat you supply, the faster the molecules move and the further apart they get.
Answer: Depends on the situation.
Explanation: Hotter things do have more energy than colder things. But, if the mass of the colder thing is bigger, it really depends. If the colder thing have way more particles than the hotter thing, the colder thing may have more energy.
Which color marks the places on the map where the continental shelf is most likely found?
Answer:
blue
Explanation:
. If Kc is the equilibrium constant for a forward reaction, 2 A⇌ B, what is Kc' for the reaction 4 A⇌ 2B?
Answer:
(Kc)^2
Explanation:
For this reaction 4 A⇌ 2B Kc is (Kc)∧².
What is equilibrium constant?The equilibrium constant is the value of the reaction quotient that is calculated from the expression for chemical equilibrium. A thermodynamic equilibrium constant, denoted by , is defined to be the value of the reaction quotient Qt when forward and reverse reactions occur at the same rate. At chemical equilibrium, the chemical composition of the mixture does not change with time and the Gibbs free energy change. Stability constants, formation constants, binding constants, association constants and dissociation constants are all types of equilibrium constants.
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For each element write the Noble gas notation
1. Oxygen
2. Calcium
3. Hydrogen
4. Copper
5. Neon
6. Cesium
Answer:
neon is the Noble gas but I have not studied this much
What do sodium and magnesium have in common?
Answer:
daddy will help
Explanation:
uhhhhhhhhhhhhhhhhhhh
When is a thunderstorm most intense
A mature stage
B dissipating stage
C wage stage
D cumulus stage
Answer:
rjdudhjwjwjiwiwiwjshdhjwiaishhw
Balancing Equations Practice
Al(NO3)3 +
3 NH4NO3
(NH4)3PO4 → | AIPO4 +
1)
2)
AgF +
CaCl2 →
AgCl +
CaF2
3)
ZnBr2 +
Pb(NO2)2 →
Zn(NO2)2 +
PbBr2
How many square centimeters are in an area of 8.20 inch2 ? Express your answer numerically in square centimeters.
Answer:
52.9031 hope this helps:)
Explanation:
Classify each chemical reaction:
reaction
1. CH3CH2OH(f) → 3O2g + 2CO2 + 3H2Og
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
2. MgI2 (aq) + Pb(NO3)2(aq) → Mg(NO3)2(aq) + PbI2(s)
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
3. 16Ks + S8s → 8K2 + Ss
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
4. CH4g + 2O2g → CO2g + 2H2Og
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
Answer:
1) combustion
2) double replacement
3) combination
4) combustion
Explanation:
The combustion of a compound refers to the reaction of that compound with oxygen to produce heat and light. In reactions (1) and (4) above, ethanol and methane reacted with oxygen to yield carbon dioxde and water. This is a combustion reaction.
Reaction(2) is a double replacement reaction because the both cations exchange their anion partners in the product.
Reaction (3) is a combination reaction. It involves the joining of two elements to form a new compound.
How many moles of a gas would be held by a 6 L container of nitrogen gas at 2 atm and 300 Kelvin?
Answer:
I think you would have to multiply 6 times 2, which it equals 12. And then just divide it by 300, and that's your answer. Hope I was able to help!
Explanation: Have a good day!
A wave is a ______ that carries ______ from one place to another?.
Answer: disruption and energy
Explanation:
Answer: disturbance; energy
Explanation:
What heats the mantle?
Answer:
Fire
Explanation:
why does random error affects precision?
Answer:
Thus, random error primarily affects precision. Typically, random error affects the last significant digit of a measurement. The main reasons for random error are limitations of instruments, environmental factors, and slight variations in procedure.
Explanation:
what is the answer?!!?
Plzzzz help
Answer:
The planet would stop
Good luck!
Solve the equation by first using the Quadratic Formula and then by factoring.
x2 – 14x + 48 = 0
A sample of aluminum, which has a specific heat capacity of , is dropped into an insulated container containing of water at and a constant pressure of . The initial temperature of the aluminum is . Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has significant digit
Answer:
The answer is below
Explanation:
A 21.0 g sample of aluminum, which has a specific heat capacity of 0.897 J g '°C ', is dropped into an insulated container containing 200.0 g of water at 25.0 °C and a constant pressure of 1 atm. The initial temperature of the aluminum is 90.1 °C Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has 3 significant digits.
Solution:
The amount of heat lost or gained by a substance is given by the formula:
Q = mcΔT
Where Q is the heat lost or gained, m is the mass of the substance, ΔT is the temperature change.
The law of conservation of energy states that energy cannot be created or destroyed but can be transferred.
Therefore the heat lost by aluminum = heat gained by water
[tex]Q_{lost}=Q_{gained}\\\\m_ac_a\Delta T_a=m_wc_w\Delta T_w\\\\m_a= mass \ of\ aluminium = 21g,c_a=specific\ heat\ capacity\ of\ aluminum\\=0.897\ J/g^oC, \Delta T_a=90.1^oC-x,x=equilibrum\ temperature\\m_w= mass \ of\ water = 200g,c_w=specific\ heat\ capacity\ of\ water\\=4.184\ J/g^oC, \Delta T_w=x-25^oC\\\\ hence:\\\\21*0.897*(90.1-x)=200*4.184*(x-25)\\\\1697.2137-18.837x=836.8x-20920\\\\838.8x+18.387=1697.2137+20920\\\\857.187x=22617.2137\\\\x=26.4^oC[/tex]
What is the chemical formula for a molecule of salt?
Answer:
Su fórmula molecular es Na Cl y es el producto de la base hidróxido sódico (NaOH) y ácido clorhídrico, H Cl. En general, las sales son compuestos iónicos que forman cristales. Son generalmente solubles en agua, donde se separan los dos iones. Las sales típicas tienen un punto de fusión alto, baja dureza, y baja compresibilidad.
Explanation:
How does photosynthesis affect food chains and food webs?
Answer:
Throughout the clarification section, the description of the situation is summarized.
Explanation:
Plant species mostly with such as photosynthesis have been providing us with just the very first food processing commodity.
They are always the component of the environment, the meals they consume, our clothing, and sometimes even our appliances, and plenty of other components or consumables. Seedlings often extract the greenhouse effect from either the environment, offer additional shelter for far too many species.Which type of decomposer can produce chemicals that are harmful to plants?
O aerobic microorganisms
O earthworms
O centipedes
O anaerobic microorganisms
Why is the combined gas law the most practiced gas law
In baseball home run hitters usually use a heavy bat. According to the formula for momentum why is that important
Answer:
The data shows that a heavier bat produces a faster batted ball speed. This makes intuitive sense since a heavier bat brings more momentum into the collision. ... So, using a heavier bat should result in faster hit balls, which means the hit ball will travel farther.
Explanation:
1. A globe is what kind of model?
interactive
mathematical
conceptual
visualization
Answer:
It's visualization.
Explanation:
Hope this helps :)
I have the smallest atomic number of all the
elements that have electrons in three different
energy levels. Who am I?
The element with the smallest atomic number is hydrogen
What is atomic number?
A chemical element's atomic number is its position in the periodic system, which places the elements in ascending order of the number of protons in their nuclei. As a result, the atomic number is also determined by the number of protons, which is always equal to the number of electrons in a neutral atom.
The charge number of an atomic nucleus is the chemical element's atomic number, also known as nuclear charge number. This is the number of protons present in the nucleus of each atom of that element, or the proton number, for conventional nuclei. The atomic number of common chemical elements can be used to uniquely identify certain elements.
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Please help
Write a balanced equation for each chemical reactions. Include appropriate symbols. First reactant formula is given.
Hydrochloric acid (HCl) reacts with Zinc to form hydrogen gas and zinc chloride.
2 HCl +
Acetylene gas (C2H2) burns in a welding torch with oxygen to form carbon dioxide gas and water vapor. 2 C2H2 (g) +
c. Silver nitrate plus calcium chloride (CaCll2) yields silver chloride and calcium nitrate. 2 AgNO3 +
d. Oxygen gas combines with hydrogen gas to produce liquid water. O2 +
e. Hydrogen peroxide decomposes into oxygen gas and water when it contacts blood. 2 H2O2
a. [tex]\mathrm{2HCl_{(aq)} + Zn_{(s)}} \rightarrow \mathrm{H_{2(g)} + ZnCl_{2(aq)}}[/tex]
b. [tex]\mathrm{2C_2H_{2(g)} + 5O_{2(g)}} \rightarrow \mathrm{4CO_{2(g)} + 2H_2O_{(g)}}[/tex]
c. [tex]\mathrm{2AgNO3_{(aq)} + CaCl_{2(aq)}} \rightarrow \mathrm{2AgCl_{(s)} + Ca(NO_3)_{2(aq)}}[/tex]
d. [tex]\mathrm{O_{2(g)}+2H_{2(g)}} \rightarrow \mathrm{2H_2O_{(\ell)}}[/tex]
e. [tex]\mathrm{2H_2O_{2(aq)}} \rightarrow \mathrm{O_{2(g)} + 2H_2O_{(\ell)}}[/tex]
This is for science! I really need help.
Answer
Solid
liquid
Gas
Explanation:
Students investigate forces and how they affect objects. They use a small car and wooden blocks to carry out their investigation
They pushed the cart and blocks 10 times, using the same amount of force. Each time, they added 5 more blocks to the wagon
They measured how far the cart moves each time. They made a line graph to show their results. What will their graph show?
The distance the cart moves decreases as the number of blocks in it increases
As the number of blocks in the cart increases, the distance it moves stays the same.
The distance the cart moves is not related to the number of blocks in it
The distance the cart moves increases as the number of blocks in the cart increases
Answer:
increase the number of blocks
increase the number of students pulling the cart
increase the number of blocks and increase the number of students pulling the cart
decrease the number of blocks
decrease the number of students pulling the cart
decrease the number of blocks and decrease the number of students pulling the cart
(ANSWER CHOICES)
Explanation:
Soda pop is carbonated with CO2. Mark puts one bottle of soda pop in the refrigerator and leaves the other out in the hot sunlight. After one hour, he opens both bottles. Which bottle will likely have more fizzing and bubbles? Why?
Answer:
The one left in the hot sunlight.
Explanation:
The solubility of gases decreases when temperature increases. The gas in the soda pop (CO2) left in the sun will not stay dissolved as much as the on left in the refrigerator.
Soda is a carbonated drink with soda or water and a sweetener. Soda pop in the fridge will have more fizzing and bubbles.
What is carbonated?Carbonated drinks are drinks or beverages that contain dissolved carbon dioxide. They have small bubbles and fizz of the carbon dioxide present in them.
Carbonation of the drinks is linked to the temperature as at high temperature, liquid tends to lose the carbon dioxide fizz. The carbon dioxide bubbles are retained at low temperatures as the solubility of the carbon dioxide is increased.
Therefore, the bottle kept in the refrigerator will have more bubbles and fizz.
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