When a person weighs himself in pounds, which system of measurement is he using?
customary
metric
its science btw
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Related Questions
need help badly please !
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Answer:ok
Explanation:
Balance the following equation by adding the correct mole numbers.
P⁴+Cl²->PCl³
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Hey there!
P₄ + Cl₂ → PCl₃
First, let's balance Cl.
There are 2 on the left, and 3 on the right.
To balance this, let's put a coefficient of 3 in front of Cl₂ and a coefficient of 2 in front of PCl₃.
P₄ + 3Cl₂ → 2PCl₃
Now we have 6 on the left and 6 on the right.
Next, let's balance P.
There are 4 on the left and 2 on the right.
Let's change the coefficient in front of PCl₃ from 2 to 4.
P₄ + 3Cl₂ → 4PCl₃
There are now 4 P on each side.
However, now Cl is unbalanced, with 6 on the left and 12 on the right.
We can change the coefficient in front of Cl₂ from 3 to 6.
P₄ + 6Cl₂ → 4PCl₃
So now, we have 4 P on each side and 12 C on each side.
This is our final balanced equation.
Hope this helps!
Answer:
1:1
Explanation:
Took test
Chlorine and Oxygen
Formula:
Name:
Bond:
What is it:
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Name: Chlorate
Bond : Single (I think)
What is it : usually a gas
Use the picture below to answer the question.
Comparing the two waves, wave B has a...
A) higher frequency.
B) greater amplitude.
C) shorter wavelength.
D) longer wavelength.
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Answer: D) longer wavelength.
Explanation:
As far as I know, you calculate frequency on a graph using the number of peaks you can see. Since the wavelength is shorter (the distance between two peaks on the wave), the frequency should also be higher as more fit on the graph.
Which element has 5 valence electrons on ring 4? ____________ Is it a metal, nonmetal or metalloid?_____________________
What element has 8 valence electrons in the 4th energy level? _____________ Is it a metal, nonmetal, or metalloid?________________
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Answer:
-Nitrogen has 5 valence electrons on the 4th shell
-nitrogen is a non metal
-
In the formula shown, what is the total number of atoms present?
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Answer:
your answer
24. hope helpful answer
explain how deep ocean currents form.
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Answer:
Deep ocean currents (also known as Thermohaline Circulation) are caused by: The sinking and transport of large masses of cool water gives rise to the thermohaline circulation, which is driven by density gradients due to variations in temperature and salinity. The earth's rotation also influences deep ocean currents.
BRAINLIESIT IF CORRECT
1
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Answer:
Reflected
Explanation:
I hope you get it right!!
Answer: absorbed
Explanation: darker colors absorb more light and heat
one example of a thermal conductor
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Answer: Metal radiator
During digestion, what happens in the stomach?
A. All food molecules are broken down into smaller molecules by chemical reactions.
B. Some types of food molecules are broken down into smaller molecules by chemical reactions.
C. Water in the food passes into the blood and travels to other organs where it is used.
D. Food passes into the blood and travels to other organs where it is used in various reactions.
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Answer:
A
Explanation:
Food is digested in the stomach for several hours. During this time, a stomach enzyme called pepsin breaks down most of the protein in the food. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones.
Answer:
A
Explanation:
In self heating cans, the chemicals in two compartments react with each other and forms……..
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calcium hydroxide : chemicals are Quicklime and water
Which of the following is an example of chemical weathering?
a Frost wedging
b Animal activity
c Plant growth
d Acid rain
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Answer:
d acid rain
Explanation:
plz mark brainlyst
FILL IN THE BLANKS
WILL MARK BRAINLIEST
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Answer:
Its not clear
Explanation:
please reupload
The initial water volume in this container was 10.0 mL. When the key was submerged, 3 volumes of displaced water were collected: 0.7 mL, 0.8 mL, and 0.9 mL. What is the volume of the key?
How did you find the volume?
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The volume of the key is 0.8 mL.
Volume of objects using sinker methodAn object that floats on water will displace its own volume. In the same vein, an object that sinks in water will displace its own volume.
Thus, in order to find the volume of an object that sinks in water, measure the volume of water that it displaces.
In this case, the water displaced by the key was measured 3 times. The average of the 3 readings will give the volume of the key.
Volume of the key = 0.7 + 0.8 + 0.9/3 = 0.8 mL
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Answer:
Explanation:
so 10.0ml -3ml
0.7+0.8+0.9ml = 0.0024 liters
Please will give brainliest...
Write 5 original weather proverbs and explain why they are true.
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A reddish sunset means that the air is dusty and dry. Since weather in North American latitudes usually moves from west to east, a red sky at sunset means dry weather—good for sailing—is moving east. Conversely, a reddish sunrise means that dry air from the west has already passed over us on their way easy, clearing the way for a storm to move in.
“Clear Moon, frost soon.”
When the night sky is clear, Earth’s surface cools rapidly—there is no cloud cover to keep the heat in. If the night is clear enough to see the Moon and the temperature drops enough, frost will form. Expect a chilly morning!
“Ring around the moon? Rain real soon.”
A ring around the moon usually indicates an advancing warm front, which means precipitation. Under those conditions, high, thin clouds get lower and thicker as they pass over the moon. Ice crystals are reflected by the moon’s light, causing a halo to appear.
“Rain foretold, long last. Short notice, soon will pass.”
If you find yourself toting an umbrella around for days “just in case,” rain will stick around for several hours when it finally comes. The gray overcast dominating the horizon means a large area is affected. Conversely, if you get caught in a surprise shower, it’s likely to be short-lived.
“The higher the clouds, the finer the weather.”
If you spot wispy, thin clouds up where jet airplanes fly, expect a spell of pleasant weather.
Keep an eye, however, on the smaller puff clouds (cumulus), especially if it’s in the morning or early afternoon. If the rounded tops of these clouds, which have flat bases, grow higher than the one cloud’s width, then there’s a chance of a thunderstorm forming.
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Which of the following is not a physical change?
A.sublimation of iodine C. tearing a piece of cloth
B. burning of wax in a candle D. dissolving sugar in a tea
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Answer: B. Burning of wax in a candle
Explanation: Burning of wax is a chemical change due to the combustion of fuel in the presence of oxygen to produce carbon dioxide. A physical change part of it is when the wax of candle melts and the shape is lost.
Why are some incomplete fossils able to be pieced together? Full fossils of large animals can be found together. Hard tissue, like bone, never breaks or chips. Fossils require salt water to be preserved fully. Impressions from the skin can be preserved.
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Answer:
Explanation:
The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.
Answer:
The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains are dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.
please solve this for me
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The standard reduction potential for the half-reaction of Be^2+ + 2e^- -> Be is given as E^0 = 3.83 V.
For the half-cell Hg^2+ | Hg, the standard reduction potential is not provided in the given information. To calculate the electric potential for the voltaic cell, we need the reduction potential for the Hg^2+ | Hg half-cell.
A voltaic cell, also known as a galvanic cell or an electrochemical cell, is an electrochemical device that generates electrical energy through a spontaneous chemical reaction. It consists of two half-cells connected by an external circuit and a salt bridge or porous barrier that allows the flow of ions between the two half-cells.
Each half-cell consists of an electrode immersed in an electrolyte solution. The electrode is typically made of a metal or a conductive material, and the electrolyte is a solution containing ions that can participate in the redox (reduction-oxidation) reaction.
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Answer:
The standard reduction potential for the half-reaction of Be^2+ + 2e^- -> Be is given as E^0 = 3.83 V.For the half-cell Hg^2+ | Hg, the standard reduction potential is not provided in the given information. To calculate the electric potential for the voltaic cell, we need the reduction potential for the Hg^2+ | Hg half-cell.
Newton's second law of motion is F = ma.
A net force of 60 N north acts on an object with a mass of 30 kg. Use Newton's second law of motion to calculate the amount of acceleration the object will experience. Then explain how the amount of acceleration will change if the net force or the mass of the object increases?
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Answer: The acceleration of the object is 2m/s^2. If net force increases, acceleration will also increase and if mass increases, the acceleration will decrease.
Explanation:
Force is defined as the product of object's mass and acceleration.
Mathematically,
F = ma ......(1)
or,
a = F/m .....(2)
where,
F = Force exerted on an object = 60N
m = mass of an object = 30kg
a = acceleration of the object = ?
Putting values in above equation, we get:
a = 60 kg.m/s^2/30 kg = 2m/s^2
The acceleration of the car is 2m/s^2.
From equation 2, it is visible that acceleration is directly proportional to force. This means that \if force increases, acceleration also increases.
And acceleration is inversely proportional to mass of the object. This means that if mass increases, the acceleration decreases.
Hence, if net force increases, acceleration will also increase and if mass increases, the acceleration will decrease.
A net force of 60 N north acts on an object with a mass of 30 kg , so according to Newton's second law of motion the acceleration of the object would be 2 m / s²,the amount of acceleration would decrease if the mass of the object increases.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
F =m × a
As given in the problem, a net force of 60 N north acts on an object with a mass of 30 kg.
60 = 30 × acceleration
acceleration = 60 / 30
= 2 m / s²
Thus, the acceleration of the object would be 2 m / s² , and the acceleration would decrease if the mass of the object increases.
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help me please !mxmlelkxxexkexk
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how did alexa canadys accomplishment impact the general public
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Answer:
She was the first female African American to be certified by the American Board of Neurological Surgery.
Explanation:
She became the first female African American can to be certified.
what is nitrogen metal nonmetal metalloid PLEASE HELP ME!!!!!!!!!!
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Answer:
nonmetal
Explanation:
does an object that feels cold to the touch contain thermal energy? explain your answer.
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An an object that feels cold to the touch contain thermal energy is true.
What is heat flow?Flow of heat takes place when from the hotter body to the colder body in order to attain the equilirium.
When an object feels cold after touching any cold material means that object contains the thermal energy and by touching that material heat or thermal energy transfer from the object to the cold material. If the ocject itself is cold or does not having thermal energy then in this condition they will not feels cold.
Hence given statement is true.
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In an electrical wire, if instead of copper, plastic wire is used. Would it conduct electricity?Justify your answer.
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Answer:
No, a plastic wire would not conduct electricity. This is because plastic is an insulator that does not allow electric current to flow through it. In a wire, electrical conductivity is provided by the movement of charged particles - typically, electrons. Copper is an excellent conductor of electricity because it has a high number of free electrons that are not bound to atoms and can move through the wire very easily. However, in a plastic wire, the tightly bound electrons of its atoms do not allow for the free flow of charges, thus preventing the passage of electric current.
Which option correctly identifies the pure substance or substances? a. diamond b. salt
A. a
B. a and b
C. b and c
D. all of them
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I think the correct answers are A and B
NEED HELP ASAP I BOUT TO LEAVE SCHOOL???????
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If you have an object that takes up 4 cubic centimeters of space and has a mass of 2g, what is the density of that object?
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4cm3 divided by 100^3 = 4x10^-6 (volume)
Mass =2g to kg 0.002kg
0.002/4x10^-6= 500kg/m3
mass divided by volume equals density
Which items are minerals or contain minerals? Check all that apply.
asap please:)
-lawn fertilizer
-topsoil
-a diamond necklace
-a copper electrical wire
-a cellular phone
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Answer:
Hey dude....
Explanation:
This is ur answer.....
Check all because all of them contain minerals.....Hope it helps!
Brainliest pls!
Follow me! :)
Answer:
lawn fertilizer, topsoil, and a diamond necklace
Explanation:
lawn fertilizer and topsoil are coming out of the ground, therefore some amount of minerals will be in them, such as iron added to it to make whatever its going on grow stronger.
a diamond necklace is a jewel that is coming out of the ground. it is categorized as a raw mineral.
I'm not 100 percent sure about the copper wire and the cell phone.
I do belive copper is a mineral.
1. Chlorobenzene, C6H5C1, is used in the production of chemicals such as aspirin
and dyes. One way that chlorobenzene is prepared is by reacting benzene, C6H6.
with chlorine gas according to the following BALANCED equation.
C6H6 (1) + Cl2 (g) → C6H5Cl (s) + HCI (g)
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What new scientific tool is very useful to observe changes in Landforms?
1. telescope
2. earthquake detector
3. camera
4. satellite
please help ;-;