Answer:
Newton's second law of motion
F = ma
what is an electromagnetic wave PLEASE ILL GIVE 15 POINTS AND BRAINLESt
[tex]An \: electromagnetic \: wave can \: travel \: through \: anything \:[/tex]
[tex] - be \: it \: air, \: a \: solid \: material \: or \: vacuum. [/tex]
[tex] It \: does \: not \: need \: a \: medium \: to \: propagate \: [/tex]
[tex]or \: travel \: from \: one \: place \: to \: another[/tex]
An electromagnetic wave can travel through anything - be it air, a solid material or vacuum. It does not need a medium to propagate or travel from one place to another
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The system international (SI) unit for energy is:
Question
The system international (SI) unit for energy is:
Answer: joule
PLZ BRAINLIEST+THANKS :)
Your mommy buys you a helium balloon at the circus. It has a volume of 4.00 liters at STP. What mass of helium, expressed in grams, does this balloon contain?
Answer:
I believe it will still be 4.00
Explanation:
0.714g of Helium is contained in the balloon
What is STP?STP stands for standard temperature and pressure. STP refers to a specific pressure and temperature used to report on the properties of matter.
According to IUPAC( International Union of Pure and Applied Chemistry), it is defined as -
Temperature of 0 degree celsius (273K)Pressure of 1 atmIt is generally needed to test and compare physical and chemical processes where temperature and pressure plays an important role as they keep on varying from one place to another.
One mole of a gas under STP conditions occupies a volume of 22.4L.
Given,
Volume = 4L
1 mole of a gas occupies 22.4L of volume at STP.
Thus, 1L of a gas occupies = 1 / 22.4 moles
so, 4 L will occupy = 4 / 22.4 moles
= 0.178 moles
Moles = mass / atomic mass
Mass = moles × atomic mass of He
= 0.178 × 4
= 0.714g
Therefore, 0.714g of Helium is contained in the balloon.
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Tara is performing a chemical experiment, at one point she needed to know whether the solution is acidic or basic so she used the PH meter to measure the solution. She got a reading of 13.4,
1. Is the solution acidic or base? Explain why.
2. What will happen to the PH when she will add water to the solution?
It is a base because its pH is greater than 7
(not sure about the second sorry!)
dlaczego emaliowane garnki rdzewieją w miejscach uszkodzenia emalii
Answer:
Explanation: I don’t even know what you said
Answer:
so basically
Explanation:
bsuxnssu hhusnn ji
-Define what petroleum is, explain how it forms, and
what it is used for today.
-Define what natural gas is, explain how it forms, and
what it is used for today.
Answer:
Petroleum, also called crude oil, is a fossil fuel.
petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria
Petroleum products include transportation fuels, fuel oils for heating and electricity generation, asphalt and road oil, and feedstocks for making the chemicals, plastics, and synthetic materials that are in nearly everything we use
plz help its due today!!!
Answer:
Explanation: First one is Purple, purple, White.
Hairy, Hairy, Non hairy.
Answer:
Any dominant trait (capital letter) will dominate the recessive trait (lowercase letter)
Explanation:
Any letter combo with the dominant trait will have that dominant trait. The only time the recessive trait will come through is if it is a double lowercase letter. Ex. PP=purple flower Pp= Purple flower and pp= white flower
If .45 moles of water vapor is produced in a chemical reaction that occurs at STP how many liters of water are produxed
Answer:
10.1 L
Explanation:
At STP (meaning T = 273 K and P = 1 atm) one mol of any given gas will occupy 22.4 liters.
With the above information in mind, we can calculate how many liters will 0.45 moles of water vapor occupy:
0.45 mol * 22.4 L / mol = 10.1 LMeaning that if 0.45 moles of water are produced at STP, 10.1 liters of water would be produced.
How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP??
PLEASE HELP
Answer:
8.8
Explanation:
You can view more details on each measurement unit: molecular weight of Aluminum or grams The molecular formula for Aluminum is Al. The SI base unit for the amount of substance is the mole. 1 mole is equal to 1 mole of Aluminum.
In the compound AbO3, the ratio of aluminum to
oxygen is
A) 3 moles of aluminum to 2 moles of oxygen
B) 2 moles of aluminum to 3 moles of oxygen
C) 2 grams of aluminum to 3 grams of oxygen
D) 3 grams of aluminum to 2 grams of oxygen
Answer:
c
Explanation:i got it right ony my test
What was the lowest extent of sea ice in the data, and when did it occur?
Answer:5 1/2. occurred the other day i think
Explanation:
Compound Q decolorizes bromine water. Compound Q has two carbon atoms in each molecule. Which statement about compound Q is correct?
a) It contains carbon-hydrogen double bonds.
b) It has six hydrogen atoms per molecule.
c) It has two carbon-carbon double bonds.
d) It is produced by cracking alkanes.
The statement " It has two carbon-carbon double bonds" is correct. because Q is a kind of unsaturated hydrocarbon.
What is unsaturated hydrocarbon?
The type of compound which contain double bond or triple bond can be considered as unsaturated hydrocarbon. Unsaturated hydrocarbon can decolorized bromine water.
Two kinds of unsaturated hydrocarbon will obtain, alkene and alkyne.
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85 grams of CO2 to molecules
Answer:
co2 = 44,01 g/mol
85\44= 1,93 mol
Explanation:
I WILL Give BRAINLIST Unlike protists, organisms in the group Animalia
A
have cells with no cell wall and have an organ system.
B
have cells with a cell wall and are heterotrophic.
C
are complex and photosynthetic.
D
are all mobile and autotrophic.
Answer:
B
Explanation:
B
have cells with a cell wall and are heterotrophic
How do stars, like the sun, produce energy?
• Answers MUST include:
○ how the energy is produced AND the kinds of energy produced.
Answer:
The sun, like all stars, is able to create energy because it is essentially a massive fusion reaction. Technically known as nuclear fusion, this process releases an incredible amount of energy in the form of light and heat.
Types of energy produced: Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium.
Explanation:
hope this helped :D
what is aqua regia solution ?
Answer:
Aqua regia is a corrosive, fuming yellow solution that is a 1:3 mixture of concentrated nitric and hydrochloric acids.
Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid (HNO3) at a ratio of either 3:1 or 4:1. It is a reddish-orange or yellowish-orange fuming liquid. The term is a Latin phrase, meaning "king's water". The name reflects the ability of aqua regia to dissolve the noble metals gold, platinum, and palladium.
If there are 6 waves in a 2-second time frame, what is the frequency
Answer:
3 Hz
Explanation:
frequency = [tex]\frac{number of waves}{time}[/tex]
thus [tex]f=\frac{6}{2}[/tex] = 3 Hz
If there are 6 waves in a 2-second time frame, the frequency is 3 Hz. When a wave travels through a medium, the frequency describes how frequently the medium's particles vibrate.
What is the frequency of a wave?The frequency identifies the frequency at which the particles of the medium vibrate as a wave passes through it.
Frequency = number of waves ÷time
The number of waves is 6 and time is 2 second
f = 6 ÷ 2
= 3
A disturbance or variation that causes energy to be transferred gradually from one point to another in a medium. It can be an elastic deformation or a change in pressure, electric potential, electric or magnetic intensity, or temperature.
Therefore, if there are 6 waves in a 2-second time frame, the frequency is 3 Hz.
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Calculate the volume, in liters, of 4 mol H2S at 60 degrees celsius and 200 KPa? Show your work
(R=8.31) (K= *C + 273) (PV= nRT)
Answer: 55.345L
Explanation:
PV=nRT
PV=4R(333)
200V=4(8.31)333
200V=11069
V=11069/200
V=55.345L
During _____________ there are 24 hours of daylight at the North Pole.
summer
winter
spring
Answer:
summer
The North Pole stays in full sunlight all day long throughout the entire summer (unless there are clouds)
Answer:
summer
Explanation:
hope this helps :)
What is the empirical formula for a compound that has 31.2% calcium, 18.8% carbon,
and 50% oxygen
Answer:
CaC2O4
Explanation:
When a stalactite is formed by water leaving mineral deposits from the ceiling of a cave, this is caused by_____
A:Erosion
B: deposition
Answer:
it is b
Explanation: As the carbon dioxide is released, calcite is precipitated or redeposited on cave walls, ceilings and floors. As the redeposited minerals build up after countless water drops, a stalactite is formed.
How many mL of HCI, 0.1 M, will you need to prepare 0.700 L of HCL, 0.025 M?
Answer:
I think you mean 0.025 M and this is the answer
Explanation:
Which of the following is likely to be affected by a growing human population?
Question 5 options:
Amount of land for farming
Amount of air pollution
Amount of clean water
All of the above
None of the above
Answer:
D.) All of the above
is the correct answer
By a growing human population, amount of land for farming, amount of air pollution and clean water is likely to be affected.
What is population?Population tells about the relative numbers of people present in particular area.
When there is a increase in the population of people then there is decrease in the amount of land for farming because more people want more land and this results in lack of land for individual. The affect of increased population results in the increase of air pollution, noise pollution, land pollution as well as water pollution.
Hence, option (d) is correct i.e. all of the above.
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5. Organisms that make their own energy storage molecules are called producers. What process do
they go through to create these molecules?
Answer:
I think it's metabolism
Hope this helps
13. "The business of America is business.” — President Calvin Coolidge.
By making this statement, President Coolidge was expressing his support for
a. higher taxes on corporations.
b. banking regulations.
c. democratic socialism.
d. laissez-faire capitalism.
Answer:
Answer isA higher taxes on corporations
I hope you like it6. For a chemical reaction, the heat of reaction is equal
to the
Answer:
internal energyExplanation:
At constant pressure, the heat of reaction is equal to the enthalpy change of the system. Most chemical reactions occur at constant pressure, so enthalpy is more often used to measure heats of reaction than internal energy
For a chemical reaction, the heat of reaction, also known as enthalpy change (∆H), is equal to the difference between the total energy of the products and the total energy of the reactants.
Enthalpy change represents the amount of heat energy exchanged or released during the course of a reaction. The heat of reaction can be positive (endothermic), indicating that the reaction absorbs heat from the surroundings, or negative (exothermic), indicating that the reaction releases heat to the surroundings.
The magnitude of the heat of reaction is a measure of the amount of heat energy involved in the reaction.
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Convert 3.5x1025 molecules of Co, to
moles,
Answer:
Convert 3.5x1025 molecules of Co, to
moles,
Explanation:
A hydroelectric dam produces renewable energy for the local area. Which best explains why more hydroelectric dams are not built?
Answer:
The dam disrupts the river wildlife and ecosystem.
Explanation:
Though it is believed that using the dam as a power generation or hydroelectric power supply generates no greenhouse gases, it, however, has many disadvantages which make it deemed not suitable or sustainable for use in the contemporary time.
Majorly, the top reason why more hydroelectric dams are not built is that "the dam disrupts the river wildlife and ecosystem."
Also, it affects the water quality and other use of water for humans such as recreational use.
There is also a possible chance of dams producing methane; a greenhouse gas through the organic materials in the water that is rotting.
Is a animal searching for water a stimulus or response
Answer:
response I believe
Explanation:
i'm pretty sure it's a response cause it's the animal responding to needing water and being thirsty
hope this helps! :)
Which is an essential characteristic of any mineral? A.Liquid B. Artificially manufactured C. Crystal structure D. Formed from organic processes
Answer:
Crystal structure
Explanation:
This is because minerals are organic or inorganic substances found naturally on the Earth and there are ordered substances at with atomic or molecular level. They are solid at normal Temperature. They have defined chemical composition and also have crystal structures.