Answer:
intensity
Explanation:
Intensity has no affect on whether or not the photoelectric effect occurs. The determining property is frequency and since frequency and wavelength are inversely proportional, wavelength matters as well
Answer:
intensty im taking it on edge
Explanation:
When hydrogen gas reacts with oxygen gas to make water, why is oxygen reduced?
Hamburger
Explanation: I ate a hamburger yesterday and methane came out my butt
Molecules are always in motion. True False
Answer: FALSE
Explanation:
explain why zn reacts more slowly with dilute hydrochloric acid then with concentrated hydrochloric acid
Answer:
When the concentration is higher, more hydrogen ions are near the Zn atoms at any given time. This allows for more Zn atoms to be ionized and dissolved into the solution per second.
Explanation:
The concentration of a potassium hydroxide solution is
84.0 g dm-3. Calculate the number of moles of potassium
hydroxide present in 300 cm3 of the solution.[K,39,H,1 0,16]
Answer:
k,39
Explanation:
Is the answer
Equation: CO2 (g) + HOH (l) <--> H2CO2 (g)
When equilibrium has been established explain in terms of reaction rates why the concentration of reactants and products remains the same.
Answer:
When a reaction has reached equalibrium, the rate of the products formation is equal to the rate of the reactants formation. In this case, as soon as H2CO2 is formed, enough breaks apart to not change the concentrations of either the products or reactants.
16. Which list shows units of a single organ system, in order from the smallest unit to the
largest unit of organization.
(2 points)
1. red blood cell, nervous system, skin, stomach
2. circulatory system, heart, cardiac muscle, muscle cell
3.hepatic cell, liver tissue, liver, digestive system
The list that correctly shows units of a single organ system, in order from the smallest unit to the largest unit of organization is as follows: hepatic cell, liver tissue, liver, digestive system.
What is level of organization?The level of organization of life shows the hierarchical arrangement of the components that make up life.
The levels of organization are as follows:
Cell - simplest unit of lifeTissue - group of cells that work together to perform similar functionOrgan - group of tissues Organ system - group of organs that work togetherTherefore, the list that correctly shows units of a single organ system, in order from the smallest unit to the largest unit of organization is as follows:
hepatic cell, liver tissue, liver, digestive system
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What is the total amount of electrons for Mg2-
Answer:
10 electrons
There are 10 electrons in a Mg2+ ion
Explanation:
Which of the following prefixes would show up in the name for SF6? Hexa, penta, tetra, hepta, and mono
Answer:
Sulfur hexafluoride
Explanation:
Phosphorus-33 has a half-life of 25 days. What fraction of the original sample would remain after 300 days?
Answer:
The correct answer is - 1/4096.
Explanation:
In the starting, there is that the number of atoms is N 0 .
The number of half-lives in this case, = 300/ 25 = 12
After the first half-lives or 25 days, N 1 = N 0 /2
the half life is that time where half of the sample had decay.
After the second half-life or 50 days, N 2 = N 1 /2 = N 0 /4 .
There is division by two the original amount, then after four times you divide four times for 2 that means that you divide by 2 ^12 =4096 .
So the final amount remain is N 12 = N 0 /4096 or 1/4096.
which one of the following are not steps of a balanced equation?
Answer:
Dealing with the states of both the reactant and product elements
Conservation of matter means that:
55
Matter is never created nor destroyed.
Matter is always created and destroyed.
Matter always turns into energy
Matter is flexible, it can be created destroyed, or turned into energy
Answer:
Matter is never created or destroyed
At which volume of base added was all the acid neutralized?
Answer: The answer is A
im 86% sure
Answer: 40mL
Explanation: it has a pH of 7. Seven defines the most neutral value on the pH scale.
PLZ HELP! IN YOUR OWN WORDS! :D
How does changing frequency and wavelength affect how you hear sound?
Answer:
wavelength is inversely proportional to frequency.
frequency determines pitch of sound.
we hear sound differently.
when the wavelength or distance is short we Hear high sound .
when the wavelength or distance is high we Hear low sound .
Carbon, C has 6 valence electrons. H has 1 valence electrons so in total how much does carbons and hydrogen have together?
Explanation:
but carbon has four Valence Electrons
What is the pH of a 3.5 x 10-5 M solution of HCl?
Answer:
4.46
Explanation:
Applying,
pH = -log(H⁺)....................... Equation 1
Where H⁺ = Hydrogen ion concentration of HCl solution
From the question,
Given: H⁺ = 3.5×10⁻⁵ M
Substitute these values into equation 1
pH = -log(3.5×10⁻⁵)
pH = 4.46
Hence the pH of HCl solution is 4.46
We can preserve natural resources by
А
drilling for as much oil as possible for just 10 years
B
using mostly trees for energy
с
relying on renewable energy sources
D
burning more fossil fuels
Answer:
drilling for as much oil as possible for just 10 yearsExplanation:
hey guys you should all call this number and leave a funny voicemail
5082036290
heheh
GO CRAZY
Answer:
Who's number is it LOL
Explanation:
Answer:
okay
Explanation:
What happens in radioactive decay to the atom
Answer:
When radioactive atoms decay, they release energy in the form of ionizing radiation (alpha particles, beta particles and/or gamma rays). The energy is called ionizing radiation because it has enough energy to knock tightly bound electrons from an atom's orbit. This causes the atom to become a charged ion
What is a cell? Please help
Explanation:
A cell is the membrane unit that contains all the fundamental molecules to living life. To make it short nd easy, a cell is the smallest nd basic unit of life, it's responsible for all life's processes. The human body is comped of m(tr)illions of cells, they all each provide different types of functions.
What type of mirror could have resulted in the image of the giraffe above?
Answer:
A convex mirror
Explanation:
Good luck on the test m8!
A convex mirror could have resulted in the image of the giraffe above. A mirror is a surface which reflects almost all types of light that strike it
What is mirror?A mirror is a surface which reflects almost all types of light that strike it, according to physics. Furthermore, unless or until an opaque item is placed between both the reflecting surface as well as the source of light, a mirror will continue to reflect light in a regular manner.
In actuality, the reflection principle underlies how mirrors function. As far as we are aware, light is either reflected or absorbed. Whenever a mirror is present, light is reflected. Because a mirror has a flat surface just at microscopic level, light is reflected when it strikes one. A convex mirror could have resulted in the image of the giraffe above.
Therefore, a convex mirror could have resulted in the image of the giraffe above.
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Which of the following statements BEST describes the interaction of a longitudinal sound wave and matter?
A. Sound waves can transfer energy only through open space or a vacuum.
B. Sound waves can travel through a vacuum and are slowed down by matter.
C.Sound waves transfer energy by carrying matter perpendicular to the direction of the wave.
D. Sound waves transfer energy from particle to particle in the matter, but the matter is not carried along with the wave.
Answer:
D
Explanation:
Only some types of waves can move through a vacuum and soundwaves ar not one of them.
Sound waves do not carry matter.
But soundwaves do transfer energy through particles and as I just said, they do not carry matter.
Sound waves convey energy from one particle to the next in matter, but they do not carry the matter with them.
Option D. is correct.
What is longitudinal sound wave?Longitudinal waves are created in which the individual fluid is flowing move in a direction that's also parallel to the energy transfer direction.
The vibrations of such particles in a sound wave flowing through air are better expressed as longitudinal vibrations.
Sound waves convey energy from one particle to the next in matter, but they do not carry the matter with them.
Option D. is correct.
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adding sugar to your tea physical or chemical change
Answer:
physical
Explanation:
no chemical reaction occurs
Answer:
the answer is physical change :)
When nutrients, water, and materials cross a cell membrane without requiring energy from the cell, the process is called
A: Active Transport
B: homeostasis
C: Selective Permeability
D: Diffusion
How many grams of NaCl are in 2.0 Liters of a 3.0 M NaCl solution?
Answer:
350.64g
Explanation:
So first you must know that M is mol/L
Next solve the problem using dimensional analysis
2L NaCl (3 mol/L) = 6 mol NaCl
After you got the number of moles you should look at your periodic table to find the molar mass
I see that it's 58.44g/mol
Use dimensional analysis again!
6 mol (58.44g/mol) = 350.64g
Don't forget to make me brainliest!
Given a gas with an initial volume of 3.0 L and a temperature of 290 K, what is the final volume if the
temperature is 273 K?
Plzzz neeed this really quick
Answer:
2.8l
Explanation:
just make v2 de subject
Please help it’s my final
Get it right :D if this is wrong or not correct ill give u a bad review And no brainiest
Answer:
In short, because we are tearing up the oxygen factories to make way for carbon dioxide emitters. (Doesn't make a lot of sense, read the explanation)
Explanation:
So, 1000 years ago, we had a lot more trees, didn't have engines or cars or factories or anything, really that released carbon dioxide into the air and we had a lot more trees and since the invention of cars, engines, carbon dioxide-emitting tools and factories and all the other things that emit "Greenhouse gases" and in doing that, cleared more trees to make room for factories and roads and that has drastically changed the outlook of the carbon cycle.
HELP ME PLSSS:(((
Question 8 of 10
What is area?
A. The substance of an object
B. A unit of measurement
C. The size of an angle
D. How much space a flat shape covers
SUBMIT
Answer:
D
Explanation:
The area of a shape is the amount of space a 2-dimensional shape covers. It's measured in units squared (units²). So, the answer is D.
The molecules of a substance formed a rigid repeating crystal structure. Then, a phase change occurred. That structure is now more like clusters of molecules moving past one another. What phase change caused this change? Plz, explain your answer.
A
condensing
B
evaporating
C
freezing
D
melting
Answer: everybody report fNnasks he doesn't answer nobody question if you see it like you told me do it yourself science is super easy
Explanation:
help please!!!!
Which of the following models BEST represents how the nucleus of an atom changes as a result of nuclear fusion?
Answer:
C is the answer
Among the following, model D best represents how the nucleus of an atom changes as a result of nuclear fusion.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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