Answer:
b
Explanation:
Answer:
it is B hope I helped
=
Explanation:
Give two limitations of law of Constant Composition
Answer:
1.The law does not hold true if the different isotopes of the element are involved in making chemical compound.
2.The law is not applicable when elements combine in the same ratio but different compounds are formed.
Plot the oxidation number of the following compounds:. H2SO4, H4P2O7, HCl, HNO3, NO, H2O, NaCl, F2, Cl2, Fe2(SO4)3
Answer:
where ni = no. of moles of any compound and mi = molecular mass of any ... Sulphur : (w) O.C. + HNO3 → H2SO4 + BaCl2 → (w1) BaSO4 ... 0.365 g of pure HCl gas is dissolved in 50 mL of solution. ... yield is 80% then calculate the amount of Cl2 produced. the amount of water ... Fe2O3 + 3SO3 Fe2(SO4)3
Explanation:
did that help if not please contact me in the comments.
The table provided shows the properties of four elements.
Based on this data, it is reasonable to conclude that which element is a metalloid?
A) 1
B) 2
C) 3
D) 4
Balance the Chemical Equations
MgF2 + Li2CO3---> MgCO3 + LiF
Please Help
Answer:
MgF2 + Li2CO3 ---> MgCO3 + 2LiF
Explanation:
Describe what the greenhouse effect is and how it is caused on a molecular level.
The greenhouse effect can be cause as the process by which the temperature of the surface of the earth increases because of the earth's atmosphere. On the molecular level, greenhouse effect will be caused by the molecules of the some chemicals, called as the greenhouse gases.
When the some of the infrared radiation coming from the Sun and passes through the atmosphere, but the most of it absorbed and it will re-emitted in all the directions by the greenhouse gas molecules and the clouds. This effect is to warm the Earth's surface and will the lower atmosphere.
As the infrared radiation and the heat will be trapped and the recycled in between the atmosphere and the planet, it will generates the heat cycle.
To learn more about greenhouse effect here
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Newton's first law of motion explains how
affects an object's motion. According to
Newton's first law, an obiect at rest will stay at
Answer:
rest until and unless an external force is applied.
what are all the populations of different species that live in the same area at the same time
Answer:
The answer is Community
Explanation:
A woman has pain in her ovaries. In which
quadrants of her abdominopelvic cavity might she
be experiencing pain?
Check all that apply.
the right lower quadrant
the left lower quadrant
the left upper quadrant
the right upper
Answer:
The right lower quadrant
The left lower quadrant
Explanation:
Those quadrants contain the ovaries and I just got it correct on the assignment.
Which element or compound could be easily shaped into a piece of jewelry?
O Ag
O FeO
O NaCI
O CaF2
Answer:
Ag should be the correct answer
Look at the picture. If one of the lightbulbs breaks or is removed, what will happen to the other lightbulb?
2 bulbs and a battery in a single loop of wire.
Question 2 options:
It will stay on
It will go off
It will change colors
It will burn out
HERES ANOTHER FOR YOU GUYS! :)
Answer:
It will go off.
Explanation:
Since the two bulbs are connected in series with the battery, when one bulb breaks breaks the circuit hence flow of current is stopped from moving to the other bulb
A compound contains carbon and hydrogen this compound goes through a combustion reaction such that compound y is produced from the hydrogen atoms in the reactant. What are compounds x and y
Answer:
x is CO2
y is H2O
Explanation:
An organic compound that contains carbon and hydrogen is called a hydrocarbon.
When a hydrocarbon is burnt in air (combustion) only two products are obtained; carbon dioxide and water. The carbon dioxide comes from the carbon component of the molecule while the water comes from the hydrogen component of the molecule.
Therefore, for a hydrocarbon CxHy we obtain; xCO2 and (x + 1)H2O as products.
Answer:
X is carbon dioxide, and Y is water.
Explanation:
I took the test.
Determine the number of seconds in one week.
Answer:
604,800 seconds in a week
Explanation:
86,400 seconds in a day
86,400 × 7 = 604,800
find the percent composition of lead in lead (II) nitrate. round to 2 significant figures.
Answer/Explanation:
62.559%
mass of an element X 100%
mass of the compound
Scientific Notation: 3.45 x 10^5
E Notation: 3.45e5
If there is 3% freshwater available on earth, approximately what percentage of it is in ice?
The Princess cruise ship left San Francisco and traveled south for 8 hours at a speed of 30mph. What is the velocity of the ship? Round your answer to the hundreths place
Answer:
v = 300 mph due South.
Explanation:
Given that,
The Princess cruise ship left San Francisco and traveled south for 8 hours at a speed of 30mph.
We need to find the velocity of the ship. It can be calculated by total distance divided by total time taken.
Velocity is a vector quantity i.e. it has both magnitude and direction. On the other hand, the speed has only magnitude (scalar quantity).
In this case it is mentioned that the cruise is travelling south with a speed of 300 mph.
Hence, the velocity is 300 mph in South direction.
A student viewed the moon through binoculars one week after a new moon.Which image shows the phases of the moon that the students observed?
Answer:The answer is D
The image that shows the phase of the moon one ( 1 ) week after the new moon is ; ( Image G )
The quarter at which the moon will be one(1) week after the new moon is up in the sky is the first quarter. And at the first quarter the moon will be in its " waning gibbous " phase.
The waning gibbous phase is the stage in the new moon cycle where only one half ( 1/2 ) or 50% of the moon is lit and the moon will remain in this stage up until 21 days.
Hence we can conclude that the image that shows the phase of the moon one week after the new moon is Image G.
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Where does the waste material in the body come from
and why does the body need to get rid of these waste
materials?
Answer:
The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.
Explanation:
____________________________________________________________
The Answer I Put On Mine:____________________________________________________________
The cells inside of your and my body alike produce these waste materials. We need to get rid of them because if we don't, we could get sick! Or possibly cause something worse...
____________________________________________________________
Why?____________________________________________________________
Well, the answer kind-of explains all I would want to say! Feel free to copy and paste this on your assignment, but do NOT use the sample answer like the other person who answered this did. (The sample answer you should NOT use: "The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.") It could make your teachers or parents suspicious of your work! Anyways, have a good day! ❥
Give answer fast (C)
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Plz plz here
A student pours 25.0 mL of water into a graduated cylinder. She drops a plece of unknown metal with a mass of 18.9 g Into the cylinder. The
water level rises to 32.0 mL. The student uses the table to identify the metal
Answer:
Aluminum
Explanation
The volume of the metal is found by subtracting the final volume by the Intel volume giving 7
And the formula for density is mass divided by volume hence minus 7 by 18.9 giving 2.7
Balance the chemical reaction for the combustion of methanol by adding the correct coefficients below
__CH3OH +__O2(little box)__CO2 +__H2O
Answer:
[tex]2~CH_3OH+3~O_2\rightarrow2~CO_2+4~H_2O\\[/tex]
The coefficients would be 2, 3, 2, and 4.
Explanation:
If we want to check this we would multiply the coefficient by each element. What we want is to have the same number of atoms on each side.
Reactant side:
# of carbon atoms: 2# of hydrogen atoms: 8# of oxygen atoms: 8Product side:
# of carbon atoms: 2# of hydrogen atoms: 8# of oxygen atoms: 8And that's it!
The general area of the atom (outside the nucleus) where the e- are located is the — and —
List four greenhouse gases in the atmosphere. For each gas, describe its prevalence in the atmosphere, its natural sources, its human-induced sources, and how its concentration in the atmosphere might be changing.
Answer: Carbon Dioxide, Methane, Nitrous Oxide and Fuorinated Gases
Explanation:Carbon dioxide (CO2): Carbon dioxide enters the atmosphere through burning fossil fuels (coal, natural gas, and oil), solid waste, trees and other biological materials, and also as a result of certain chemical reactions (e.g., manufacture of cement). Carbon dioxide is removed from the atmosphere (or "sequestered") when it is absorbed by plants as part of the biological carbon cycle.
Methane (CH4): Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from livestock and other agricultural practices and by the decay of organic waste in municipal solid waste landfills.
Nitrous oxide (N2O): Nitrous oxide is emitted during agricultural and industrial activities, combustion of fossil fuels and solid waste, as well as during treatment of wastewater.
Fluorinated gases: Hydrofluorocarbons, perfluorocarbons, sulfur hexafluoride, and nitrogen trifluoride are synthetic, powerful greenhouse gases that are emitted from a variety of industrial processes. Fluorinated gases are sometimes used as substitutes for stratospheric ozone-depleting substances (e.g., chlorofluorocarbons, hydrochlorofluorocarbons, and halons). These gases are typically emitted in smaller quantities, but because they are potent greenhouse gases, they are sometimes referred to as High Global Warming Potential gases ("High GWP gases").
If the temperature of a gas increased from 100 K to 200 K and the volume of a gas decreased from 20 L to 10 L, what is the new pressure if the original pressure was kPa?
Answer:
320pka
Explanation:
This is a complete question;
If the temperature of a gas increased from 100 K to 200 K and the volume of a gas decreased from 20 L to 10 L, what is the new pressure if the original pressure was 80kPa?
EXPLANATION;
Gas laws can be regarded as aws which relate the pressure, volume, as well as temperature of a gas. It can be expressed as
P1V1/T1 = P2V2/T2
Where
V1= initial volume= 20L
V2 = final volume= 10L
T1 = initial temperature= 100K
T2 = final temperature= 200K
P2=final pressure=
P1= initial pressure= 80pka
Making P2 subject of the formula from the eqn, we have
P2= (P1*V1*T2=)/(T1*V2)
If we substitute the values we have
P2= (80 × 20×200)/(100×10)
P2= 320pka
Hence, the new pressure is 320pka
1. Which term best describes ultraviolet radiation?
a. Harmless
b. Invisible
c. Undetectable d. Beneficial
Significant Figures
1. Indicate how many significant figures there are in cach of the following measured values.
un
246.32
5
1.008
700000
107.854
3
0.00340
3
350.670
4
100.3
14.600
1.0000
6
0.678
0.0001
320001
HELP HELP DUE IN 5 MINS I WILL MARK BRAINLIEST
Just say that it went below 0/average.
what does newton’s first law of motion explain
Answer:
Newton's first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
HELP!!! 2Mg+O2->2MgO
What are the products of this reaction??
WILL GIVE BRAINLEST
Answer:
the products which is formed in the given reaction is MgO ( magnesium oxide )
Explanation:
when magnesium metal reacts with oxygen present in air it burns with a white dazzling flame
to form white powder of magnesium oxide (MgO)
here's the balanced chemical reaction for it
2Mg+O2->2MgO
Directions are in the picture
State one part of Dalton’s Atoms Theory?
Answer:
The second part of the Dalton's atoms
theory says all atoms of a given element are identical in mass and properties.
