100 years
There's 100 years in between each listed year.
Answer:
A 100
Explanation:
describe the trend in viscosity of hydrocarbon fuels
Answer:
Hydrocarbons are the chemical compound that contain the elements carbon and hydrogen only.
They are compounds that are obtained from the fossil fuel crude oil by a process called fractional distillation.
The first record of the scientific method being used was approximately
O A) 600 years ago.
O B) 3,000 years ago.
O C) 50 years ago.
O D) 1.200 years ago.
Answer:
600 years ago
Explanation:
it was first recorded by England's Sir Francis Bacon (1561-1626)
Look at the picture. Assume that all of these substances are in different containers. In all of
these substances, atoms have combined to form
ions
elements
molecules
mixtures
Answer:
Elements?
Explanation:
Im not sure but I think its elements because carbon dioxide is, and the others sound like it too
Which one would it be?
Answer:
it would be C! 0.0520 Km
WILL MARK BRAINLIEST
7. When the numbers 5.56 x 10^2 and 3.81 x 10^3 are added the result is:
a) 4.36 x 10^3
b) 4.366 x 10^3
c) 4.366 x 10^2
d) 4.37 x 10^3
Answer:
option b
Explanation:
556+3810
=4366
=4.366*10^3
Hope it helps
Pls mark as brainliest
HELP PLEASE!!
Calculate the mass in grams of an object whose volume is 67.8 mL and whose density is 7.25 g/mL
Answer:
The mass of the object would be 491.55g/mL. Hope this helped! :)
Explanation:
D= 7.25g/mL M=D•V
V= 67.8mL
M=7.25g/mL•67.8mL
M= 491.55g
Which describes a property of water that allows plants to transfer it from their roots to their leaves?
O Water exhibits weak adhesion and cohesion, which allows capillary action to occur.
O Water exhibits strong adhesion and cohesion, which allows capillary action to occur.
Water has low surface tension, which prevents capillary action from occurring.
Water has high surface tension, which prevents capillary action from occurring.
Answer:
B water exhibits weak adhesion and cohesion which allows capillary action to occur.
Explanation:
took the test
Water exhibits strong adhesion and cohesion, which allows capillary action to occur.
What property of water allows it to move through a plant?The cohesive properties of water (hydrogen bonding between adjacent water molecules) allow the column of water to be 'pulled' up through the plant as water molecules are evaporating at the surfaces of leaf cells. This process has been termed the Cohesion Theory of Sap Ascent in plants.
What are adhesion and cohesion?Cohesion and adhesion are two water properties that describe how water molecules interact with each other. and how water molecules interact with other things like leaves or even you. Cohesion means that water likes to stick to itself and adhesion means that water likes to stick to other things.
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What does the mass of an object depend on?
Answer:
the mass of an object depends on inertia greater is the inertia greater will be the mass or vice versa
Explanation:
hope it help ^_^
Mass is the most basic property of matter and it is one of the fundamental quantities. Mass is defined as the amount of matter present in a body. The SI unit of mass is the kilogram (kg). The formula of mass can be written as:
Mass = Density × Volume
The mass of a body is constant; it doesn’t change at any time. Only in certain extreme cases when a huge amount of energy is given or taken from a body, the mass may be impacted. For example, in a nuclear reaction, a tiny amount of matter is converted into a huge amount of energy, this reduces the mass of the substance.
There are various units for calculating mass, like, kilograms, grams, lbs, pounds, etc., but the SI unit of mass is "kilograms" or kg. Every unit of mass can be converted to other units by using a proper conversion formula without affecting the meaning and essence of the quantity to be measured.
HENCE,MASS OF AN OBJECT DEPENDS ON:
size of an atom or moleculesAnd number of atoms and molecules of the body.For more such examples follow this link:
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pls help!! What volume is represented by each small tick mark? (look at attachment)
The mark represents a volume of 25ml.
What is a measuring cylinder?A Measuring cylinder, a graduated cylinder, a cylinder measuring, or a mixing cylinder is a part of various laboratory materials that are used for the measurement of the volume of liquids, chemicals, or solutions during laboratory work.
Graduated cylinders have more precise and accurate measurements than the common volumetric flasks and beakers used in the laboratory. These are of various volumes ranging from small to big.
These graduated cylinders are also used for the determination of displacement. It is a measurement of the change in a volume of water when some additional materials are added to it.
This means that a graduated cylinder can be used for the determination of solid materials by taking the difference between the initial volume of water and the new volume of water.
Therefore, in this case, the mark represents a volume of 25ml.
Read more about lab apparatus, here
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how many energy levels do aluminum, argon and sodium have?
plz help
Answer:
aluminum - 3,argon - 3,sodium - 3
Explanation:
a metal rod weighing 123 g with a temperature of 100 c is placed in a 75 ml of water at 25 c if the final temperature of the metal and water is 29 c what is the specific heat capacity of the metal? assume the density of water is 1.0 g/ml and specific heat capacity of water is 4.184 j/g c
Answer:
What grade r u in
Explanation:
Just bcauz Ima coo dud and 5=5 and 1=1
Which statement about the electron cloud model is ttue
What volume is equivalent to 14,000 mm cubed
Answer:
14mL
Explanation:
1mL = 1cm^3, 1000mm^3 = 1000cm^3
water is 11.19% hydrogen and 88.1% oxygen by mass. Lake superior contains about 1.2x10 kg of water. what mass of hydrogen is contained in lake superior
Answer:
mass of hydrogen in lake = 11.19% of 12
= 1.3428
check if question is correct or not
Explanation:
Water is 11.19% hydrogen and 88.1% oxygen by mass. Lake superior contains about 1.2x10 kg of water the mass of hydrogen is 1.32 kg
What is mass?Mass is defined as a unit of measurement that describes the amount of matter that makeup an object.
It can also be defined as quantitative measures of inertia, fundamental properties of all matter. It is a dimensionless quantity.
As given 11.19% hydrogen is present in 1.2 x 10 kg
So, the mass of hydrogen = 11.198 % of 1.2 x 10 kg
= 11.19 / 100 x 12
= 1.32 kg
Thus, water is 11.19% hydrogen and 88.1% oxygen by mass. Lake superior contains about 1.2x10 kg of water the mass of hydrogen is 1.32 kg.
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PLEASE HELP The arrows in the chart below represent phase transitions.
Three bars are shown labeled Solid, Liquid, and Gas. They are connected by arrows labeled 1 to 6. Arrow 1 points from liquid to gas; arrow 2 from solid to liquid, arrow 3 from solid to gas, arrow 4 from gas to liquid, arrow 5 from liquid to solid, and arrow 6 from gas to solid.
Which arrows represent the phase transitions in which heat energy is gained?
1, 2, and 3
2, 3, and 5
3, 4, and 5
4, 5, and 6
1, 2, and 3
hope it helps next time upload with picture
Matt's cube, after 5 trial, had an average destiny of 7.40. g/cm what is it made of ?
Explanation:
5 trial, had an average destiny of 7.40. g/cm
What is the number of protons plus the number of neutrons equal to?
A. atomic number
b. atomic charge
c. atomic isotope number
d.mass number
Answer:
atomic number
Explanation:
The mass number of the atom (M) is equal to the sum of the number of protons and neutrons
1. A 205 g sample of H20 at 25.0 °C is heated until the temperature reaches 75.0 °C. How many
Joules of heat were required to do this? (remember c = 4.184J/g • °C)
Answer:
i really dont know
Explanation:
byeeeeeeeeeeeee
In the reaction BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq), what phases are the reactants in before the reaction?
Question 4 options:
A)
BaCl2 is a liquid, and Na2SO4 is a gas.
B)
BaCl2 is a solid, and Na2SO4 is in aqueous solution.
C)
Both reactants are gases.
D)
Both reactants are in aqueous solution.
Answer:
D. both are stated to be in aqueous solutions by the (aq)
Explanation:
I really need help with this before 5:10
Show your work
Your big brother has been brageing about how he can bench press 4.000 grams at the gym. Sounds impressive.
but you know better. Use your skills to find how many pounds of weight he is actually pressing.
( I got you fam. )
Answer ( assuming that your brother is doing 4,000 grams and not 4 grams ) :
around 8 pound's
Explanation:
1 gram = around 0.002 gram's
4,000 x 0.002 = 8
8 pound's :-)
What do hydrologists primarily study?
O A. Stars
O B. Rocks
O c. Water
O D. Weather
Ex of physical Properties
Using the periodic table, complete the table to describe each atom. Type in your answers
A
B
C
D
E
F
Answer:
A. 20 B.40 C. Ca D. 10 E. 9 F. F
Explanation:
Answer:
A.) 20
B.) 40
C.) Ca
D.) 10
E.) 9
F.) F
Explanation:
just did it on edge 2020 & got it correct....
why are group viia elements very active nonmetals
What happens when a Bose-Einstein condensate forms?
A. A large atom is split into many smaller atoms temporarily.
B. The atoms of the solid condense into one large superatom.
C. It causes all matter touching it to condense into a liquid.
D. The electrons separate from the nuclei forming a mass of unbound positive and negative charges.
Answer:
the answer would be B
Explanation:
The atoms of the solid condense into one large superatom. Hence, option B is correct.
What are atoms?An atom contains a central nucleus surrounded by one or more electrons.
Bose-Einstein condensation occurs at a temperature very close to absolute zero i.e 273.15 degrees centigrade. Under such conditions, a large quantity of Boson occupies the lowest quantum state, at which point microscopic quantum phenomena become apparent macroscopically. A BEC is formed by cooling a gas of extremely low density about one hundred thousandth the density of normal air, to ultra-low temperature.
Hence, option B is correct.
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how do I solve for V1 in this equation
Answer:
[tex]V_{1} = \frac{P_{2}V_{2}T_{1}}{P_{1}T_{2}}[/tex]Explanation:
[tex]\frac{P_{1} V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]
First of all cross multiply
That's
[tex]P_{1}V_{1}T_{2} = P_{2}V_{2}T_{1}[/tex]
Next divide both sides by [tex]P_{1}T_{2}[/tex] in order to isolate [tex]V_{1}[/tex]
We have
[tex]\frac{P_{1}V_{1}T_{2}}{P_{1}T_{2}} = \frac{P_{2}V_{2}T_{1}}{P_{1}T_{2}}[/tex]
We have the final answer as
[tex]V_{1} = \frac{P_{2}V_{2}T_{1}}{P_{1}T_{2}}[/tex]
Hope this helps you
How does a scientist test their hypothesis?
Answer:
Conducting experiments and using the scientific method.
Explanation:
Scientists (and other people) test hypotheses by conducting experiments. The purpose of an experiment is to determine whether observations of the real world agree with or conflict with the predictions derived from a hypothesis. If they agree, confidence in the hypothesis increases; otherwise, it decreases.
According to ______Law, if the temperature remains constant, doubling the pressure will _______the volume of the gas.
Answer: According to Boyle's Law, if the temperature remains constant, doubling the pressure will halve the volume of the gas.
Explanation:
can someone help me please
Answer:
A
Explanation:
the circles are more tightly packed together in box A than in box B in the same amount of space
What are the three types of symbiosis?
Answer:
commensalim, mutualism, parasitism