Hazardous materials are grouped into classes identifying their.
Hazardous materials are grouped into classes identifying their similarities in composition and structure.
Why hazardous materials are grouped into classes?The hazardous materials are grouped into classes in order to tell us about the severity of hazard and it is done on the basis of similarity in composition.
So we can conclude that hazardous materials are grouped into classes identifying their similarities in composition and structure.
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how many moles are in 500.0cm^3 of oxygen gas at stp
Answer:
.02232 mole
Explanation:
At STP each 22.4 liters is a mole
.5 liters / 22.4 l/mole = .02232 mole
NEED HELP ASAP!! THANKS! (will mark brainliest)
Newspaper has a Specific Heat Capacity of 1.336 J/goC. How many Joules does a 115g sample of newspaper absorb when it changes temperature from 25oC to 31oC?
Answer:
Is this what you're looking for?
Explanation:
how is energy obtained from different sources stored, transported, and used?
Answer:
Mode of transportation and source of energy
Energy sources are used in several major ways
Gasoline is used in cars, motorcycles, light trucks, and boats. Aviation gasoline is used in many types of airplanes. Distillate fuels are used mainly by trucks, buses, and trains and in boats and ships. Jet fuel is used in jet airplanes and some types of helicopters.
Explanation:
HELP ME PLEASE!!! WILL MARK BRAINLIEST!!
Answer:
See answers below
Explanation:
-44.3 kj/mole * x moles = - 18.7 kj
solve for x = .422 mole dissolved
Mole weight of NaOH is
Na = 22.989 O = 15.999 H = 1.008 gm/mole
= ~~ 40 gm/mole for NaOH
40 gm / mole * .422 mole = 16.88 gm of NaOH
How are transform boundaries different from
convergent and divergent boundaries?
Answer:
As the plates travel horizontally past one other, no crust is formed nor destroyed.
Explanation: tectonic plates
An air sample in an elastic bag has a volume of 3. 8 L when the temperature is 10 C. What will be the volume in liters when it is heated to 150 C?
At 10°C :
Volume = 3.8 LTemperature (in Kelvin) :
[tex]\qquad \tt \dashrightarrow \: 10 + 273[/tex]
[tex]\qquad \tt \dashrightarrow \: 283 \: k[/tex]
Now,
Temperature in Kelvin (at 150° C)
[tex]\qquad \tt \dashrightarrow \:150 + 173[/tex]
[tex]\qquad \tt \dashrightarrow \:323 \: k[/tex]
Now, let's find the volume (x) [ assume pressure to be constant ]
[tex]\qquad \tt \dashrightarrow \: \dfrac{V_1}{T_1} = \dfrac{V_2}{T_2}[/tex]
[tex]\qquad \tt \dashrightarrow \: \dfrac{3.8}{283} = \dfrac{x}{323}[/tex]
[tex]\qquad \tt \dashrightarrow \: \dfrac{3.8}{283} \times 323 = {x}[/tex]
[tex]\qquad \tt \dashrightarrow \: {x} \approx4.34 \: \: litres[/tex]
File attached, i need an explanation too
33. Stan and Kenya are investigating the properties of gases in the lab. Stan has a balloon filled with helium, and Kenya has a balloon filled with hydrogen. Under which condition do the gases in the two balloons have the same kinetic energy?
same volume
same pressure
same temperature
same concentration
will give brainliest
If the sample of helium and nitrogen gas has the same kinetic energy, then it follows that hey have the same temperature.
Kinetic energy of gasesWe know that gas molecuules are in constant random motion hence they collide with each other as well as with the walls of the container. The temeprature of the gas determines the kinetic energy of the gas.
Hence if the sample of helium and nitrogen gas has the same kinetic energy, then it follows that hey have the same temperature.
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how do i solve this?
Answer:
57.6g
Explanation:
In the balanced equation H2O and Mg(OH)2 have the same coefficient (1) so we know that 3.2 moles of H2O react to form 3.2 moles of Mg(OH)2. Now we just have to calculate the mass of the H2O which we can do by finding the molar mass from the periodic table. For this just add the molar masses of the consituent atoms. (2(1)+1(16))=18g/mol H2O. Now that we know the molar mass we just have to multiply it by the amount of moles. 18*3.2=57.6g H2O
Simple question.
Why do tsunamis do most of their damage onshore, and not in the middle of the ocean?
Answer:
im assuming its due to something like water on water not eing as bad as the thwap of water on land. this wasnt a test question was it?
Explanation:
Answer:
As the tsunami waves become compressed near the coast, the wavelength is shortened and the wave energy is directed upward - thus increasing their heights considerably. Just as with ordinary surf, the energy of the tsunami waves must be contained in a smaller volume of water, so the waves grow in height. and they can't do damage out in the middle of the ocean because there is not much to damage out in sea
Explanation:
Scientists used to believe that chemical reactions fueled the sun. Why did this lead them to believe that the sun was very young? What kind of reactions do we now think are responsible for the energy released by the sun? In one to two sentences , explain your reasoning 2 points )
The energy produced by the sun is as a result of nuclear reactions which produces large amounts of energy.
What are chemical reactions?Chemical reactions are reactions which occur as a result of a rearrangement of atoms of elements to form new combinations of substances known as compounds.
Since chemical reactions which have relatively short lifespans, scientist would have assumed that the sun is very young.
However, nuclear reactions have been proven to be the means by which the sun produces its energy.
Nuclear reactions release large amounts of energy and have relatively long lifespans.
Therefore, the energy produced by the sun is as a result of nuclear reactions.
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What is the best method for monitoring the progress of reaction during the oxidation reaction of borneol to camphor
Answer:This reaction will be followed by TLC to monitor the progress of the oxidation. The camphor is then reduced by sodium borohydride to give the isomeric alcohol,
Explanation:
hopes this helps<33
what is the difference between high and low pressure?
A. there are the same number of particle collisions happening in high and low pressure
B. in low pressure, there are more particle collisions happening then high pressure
C. in high pressure, there are more particle collisions then low pressure
D. pressure is not caused by the collisions of particles
When chemical reactions occur the _____ but the _____.
Answer: Heyo Kenji Here! Here's your answer- when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
Explanation: ~Hope this helps!~
Have a nice day!
- Kenji ^^
Give the full electron configuration for nitrogen.
Answer:
1s2 2s2 2p3
Explanation:
How does volume affect temperature and pressure?
Answer:
The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure
Explanation:
how many moles of water are needed to react with 2.3 grams of sodium
Answer:
Brainliest pls
Explanation:
Theoretical yield = 0.1 g
Percent yield = 80%
True or false The reaction is fastest when few bubbles are being produced.
Answer:
no, it is fastest when many bubbles are produced.
Explanation:
Someone can you help me Please urgent
Answer: I believe in you.
Explanation:
studdy. You got this buddy!
If 26.5 L of nitrogen at 748 mm Hg are compressed to 765 mm Hg at constant temperature. What is the new volume?
Answer:
25.91 L
Explanation:
P1V1= P2V2
748 (26.5) = 765 ( V2) V2 = 25.91 LITERS
why is the speed of these particles deffirent in each state
Answer:
due to difference ic kinetic energy
Explanation:
Why does brownian motion occur
Answer:
Explanation:
Particles in both liquids and gases (collectively called fluids) move randomly. This is called Brownian motion. They do this because they are bombarded by the other moving particles in the fluid. Larger particles can be moved by light, fast-moving molecules.
Determine the mass of an object that has a volume of 88.6 mL and a density of 7.77 g/mL. 0.0877 g 80.8 g 96.37 g 688 g 11.4 g 10 points
Answer:
688g
Explanation:
This is the correct awnser
PLEASE HELP!!!!! (SCIENCE!!!)
large iguanas are affected by el nino temperatures
because algae do not grow as rapidly with el nino temperatures
survival rates for the larger iguanas drop
if they are bigger than 36 centimeters
the drop happens beginning with sizes around 40 centimeters
what is the molarity of 2.0 L of a solution made from 2.4 moles of NaCl and water?
Answer: 1.2 M
Explanation:
molarity = (moles of solute)/(liters of solution) = 2.4 / 2.0 = 1.2 M
For the reaction H2O(g) + Cl2O(g) → 2HCIO(9), you know S rxn and Sosys and S° of HCIO(g) and of H2O(g). Write an expression that can be used to determine Cl2O(g)
The expression that can be used to determine Cl2O(g) is ;
[tex]S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}[/tex]
Determine an expression that can be used to determine Cl2O(g)The general expression for ΔS°rxn of a chemical reaction
ΔS°rxn = ∑mS°products - ∑nS°reactants
where ; m and n = stoichiometry coefficients
Considering the given reaction : H₂O(g) + Cl₂O(g) → 2HCIO (g)
[tex]\beta[/tex]S°rxn = [tex]2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) } ^{o} - S_{Cl_{2}O } ^{o}[/tex] ------- ( 2 )
Rearranging the equation above
[tex]S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}[/tex]
Hence we can conclude that The expression that can be used to determine Cl2O(g) is ;
[tex]S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}[/tex]
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Which transportation system is best used to transport people and goods to remote inland areas?(1 point)
road transport
hope it helps...!!!
Answer:
1. road
2. It evenly
3. system, subsystem, componet
4. control
5. combustion.
Hope this is helpful
The reaction below consistently yields 82% of the theoretical value. If you need to make 10 g of Mg(OH)2 How much Mg3N2 (g) should you use (assume that you will use H2O in excess).
Mg3N2(s) + H2O(l) → Mg(OH)2(s) + NH3(g)
Help me please!
If excess [tex]H_2O[/tex] is used as stated in the illustration the amount of [tex]Mg_3N_2[/tex] that would be required would be 7.57 grams
Stoichiometric calculationFrom the equation of the reaction:
[tex]Mg_3N_2(s) + 6H_2O(l) --- > 3Mg(OH)_2(s) + 2NH_3(g)[/tex]
Since the yield is 80% of the theoretical value, in order to make 10g, the theoretical yield would be 12.5 g.
Mole ratio of [tex]Mg_3N_2[/tex] and [tex]Mg(OH)_2[/tex] = 3:1
Mole of 12.5 g [tex]Mg(OH)_2[/tex] = 12.5/53.32 = 0.225moles
Equivalent mole of [tex]Mg_3N_2[/tex] = 0.124/3 = 0.075 moles
Mass of 0.0041 moles [tex]Mg_3N_2[/tex] = 0.075 x 100.95 = 7.57 grams
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Types of isomers possible for ch3 ch2 ch2 ch3
Answer:
It has two isomers; n-butane and isobutane. Here n-butane is a straight-chain compound with four carbon atoms bonded with single covalent bonds. Explanation: Butane is an alkane with four carbon atoms so molecular formula is C4H10.
Explanation:
The volume of a sample of hydrogen gas at 0. 997 atm is 5. 00 L. What will be the new volume if the pressure is decreased to 0. 977 atm? Temperature is constant
Answer: 5.10 L
Explanation: