Answer:
3.96 × 10-9
Explanation:
Answer: 4.1712 x 10^-8
Explanation:
What did Helsenberg's Uncertainty Principle show about electrons?
The atomic number, or _____ number, is the described as the number of _____ in the nucleus of an chemical element.
Answer:
proton number
protons
Explanation:
Answer:
Proton, protons
Explanation:
The atomic number, or proton number is described as the number of protons in the nucleus of an chemical element. Electrons change on the atom/ion and neutrons change in the isotopes but the number of protons always stays the same and is considered a unique atom identifier.
Which of the following would not be classified as a result of climate change?
A. Expanding glaciers
B. Increased droughts
C. Extreme weather
D. Rising sea levels
Answer:
all
Explanation:
because they all are someone related to climate change
Answer:
your awnser would be expanding glaciers.
Explanation:
have a nice day hope this helps
Which is responsible for carrying the signals for vision from the eye to the brain? retina. rods and cones. optic nerve. cornea
Answer:
Optic Nerve
Explanation:
Hello There!!
The answer is C. Optic nerve.
Because, The eye works like a camera. The cells in the retina absorb and convert the light to electrochemical impulses which are transferred along the optic nerve to the brain. The brain is instrumental in helping us see as it translates the image into something we can understand.
P.S Tell me if this is wrong...
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# [tex]Always[/tex] [tex]Brainly![/tex]
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why unit of force is derived unit?
Answer:
Because it is the product of two more basic units, mass and acceleration. The calculation of force is as follows:
Force=mass*acceleration
Mass is a base unit, acceleration is a derived unit calculated as a function of length and time which are both base units.
Any unit definition that is a function of more basic units is considered a derived unit.
Does a hypothesis need to be correct for an experiment to be a success? Explain why or why not?
Answer:
No it does not need to be correct to be a success. It would just need to be reasonable and possible for you to do so that you dont hypothesize that animals are actually human because that is unlogical and impossible
Explanation:
Answer:
No, of course not.
Explanation:
The goal of a hypothesis is for the researchers to determine whether or not they accurately guessed what would happen in their experiment. The fact that the hypothesis was right or wrong has no effect other than if the researchers had a correct educated guess.
Would the answer here be b?
Answer:No the answer is D
Explanation:The reaction between the reactants occurs only when they collide in correct orientation in space. Greater the probability of collisions between the reactants with proper orientation, greater is the rate of reaction. The orientation of molecules affect the probability factor, p. The simple molecules have more ways of proper orientations to collide.
1. How many centimeters are in 29.81 miles?
Answer:
4797454.5
Explanation:
Answer:
4,797,442.5 centimeters
Explanation:
1 mile = 160,934 centimeters
29.81 * 160934
4797442.5
Best of Luck!
The following values are measured in the laboratory: 40.0 g +0.7631g +
610.70 g. The correct total recorded (with the correct sig figs) by the lab
technician was
*
651.5 g
651.4631 g
651.46 g
651 g
An organized process used to gather observations and test a hypothesis is an)
a. a problem
b. experiment
C. exercise
d. constant
Answer:
B experiment
Explanation:
Identify the difference between natural and artificial dyes.
What information does the rate constant give from the rate law?
A. It tells how much the rate of the reaction is affected by volume.
B. It tells how much the rate of the reaction is affected by
temperature.
C. It tells how much the reaction rate is affected by concentrations.
D. It tells how much the reaction rate is affected by activation energy.
Answer:
C
Explanation:
Because how would you know what the reaction rate is and how it is affected by the concentrations
The information that the rate constant give from the rate law is it tells how much the reaction rate is affected by activation energy.
Hence, Option (D) is correct answer.
What is Rate Law ?The rate law is also known as rate equation which is defined as the law which is used to predict the relationship between the rate of the reaction and the concentration of the reactants participating in it.
It is expressed as
Rate = k [A]ˣ [B]ⁿ
where,
k is rate constant
A is concentration of species A
x is order of reaction w.r.t A
B is concentration of species B
n is order of reaction w.r.t B
Thus from the above conclusion we can say that The information that the rate constant give from the rate law is it tells how much the reaction rate is affected by activation energy.
Hence, Option (D) is correct answer.
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What did you include in your response? Check all that
apply.
Sample Response: The root beer exerts a force on all
sides of the ice cream. These forces are all equal and
cancel each other out. Gravity pushes downward on the
ice cream. This can also be called the weight of the ice
cream. Buoyant force pushes the ice cream upward. The
ice cream floats because the buoyant force is greater than
the weight of the ice cream.
The root beer exerts a force on all sides of the ice
cream. These forces are all equal and cancel each
other out.
Gravity pushes downward on the ice cream. This
can also be called the weight of the ice cream.
Buoyant force pushes the ice cream upward.
The ice cream floats because the buoyant force is
greater than the weight of the ice cream.
Intro
Done
Answer: All of them
Explanation: Yw!
Answer:
A B C D
Explanation:
on edge :)
What is the smallest to largest of Cell,atom,neutron,and electron
Explain the four basic types of chemical reactions. Be sure to include a sample equation for each type. Describe how rate relationships and activation energy are important in chemical reactions.
What is the Ground state electron configuration for lead?
Answer:
Lead atoms have 82 electrons and the shell structure is 2.8. 18.32. 18.4.
Explanation:
The ground state electron configuration of ground state gaseous neutral lead is [Xe].
A cup of gold colored metal beads was measured to have a mass 425 grams. By water displacement, the volume of the beads was calculated to be 48.0 cm3. Given the following densities, identify the metal.
Gold: 19.3 g/mL
Copper: 8.86 g/mL
Bronze: 9.87 g/mL
Given parameters;
Mass of gold colored metal beads = 425g
Volume of water displaced by beads = 48.0cm³
Unknown;
Identity of the metal = ?
Given densities;
Gold: 19.3 g/mL
Copper: 8.86 g/mL
Bronze: 9.87 g/mL
Density is an intensive property of any substance. This implies that we can use the density of any substance to identify it.
Density can be defined as the mass per unit volume of a substance. Every substance has a unique mass per volume.
Mathematically;
Density = [tex]\frac{mass}{volume}[/tex]
where mass is in kg or g
volume is in m³ or cm³
To find the density, we must know the mass and volume.
In this problem, the volume of the gold metal beads is the same as the volume of water displaced. This is a way to measure volume of solids.
Since the volume is given in cm³, and we are comparing with choices that have units in g/mL, we simply convert the volume in cm³ to mL
1cm³ = 1mL³
So therefore, volume of gold colored metal is 48mL
Now input the parameters given and solve for the density;
Density = [tex]\frac{425g}{48mL }[/tex] = 8.85g/mL
From the given densities, we clearly see that copper is the metal since they both of similar densities.
2. Matter can be described and classified by its observable properties. One property of solids, liquids, and gasses is they all have volume. Which statement best defines the volume of an object?
A. The amount of space that matter occupies
B. The amount of matter in an object
C. The measure of the force of gravity on an object
D. The number of grams in one cubic centimeter
3.When matter changes from a solid to liquid or from liquid to gas, what kind of change takes place?
A.Chemical change
B. Physical change
C. Thermal change
D. Energy change
4. Darius tears a page of newspaper into pieces to start a campfire. What kind of changes taking place as the paper is torn?
A. A change in matter
B. A change in the substance
C. A change in physical property
D. A change in chemical property
5. Mina is attending cooking school, where she prepares a different mixtures of ingredients. She works with homogenous and homogenous mixtures. Today she is using honey and salsa. What kind of mixtures are these ingredients?
A.Neither is a mixture.
B. They’re both homogenous
C. One is homogenous and the other is heterogeneous.
D. They are both heterogeneous.
When a substance has large or strongly extracted particles, they do not flow freely. For example, water flows very quickly compared to honey. Which property of liquids does the example illustrate?
A. Surface tension
B. viscosity
C. Amorphousness
D. Crystallinity
Volume is amount of space that matter occupies ,when matter changes from solid to liquid to gas, physical change takes place,tearing of paper is change in physical property ,honey is homogenous and salsa is heterogenous ,property of liquid which is described is viscosity.
What are physical changes?
Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.
Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.
They involve only rearrangement of atoms and are often characterized to be changes which are reversible.
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2) In science there are fundamental units and derived units. Derived units are arrived at by combining
two or more fundamental units in some way. Which ONE of the following is a derived unit?
A) Meter
b) second
C) Kelvin
D) g/cm3
Which statement does NOT correctly compare silicon with another element?
o Silicon is a better conductor of electricity than sulfur.
Silicon conducts electricity as well as copper does
Silicon is a solid at room temperature, but argon is a gas.
Silicon is less malleable than silver.
Answer:
the second choice
Explanation:
silicon is a semiconductor, so it does not conduct electricity as well.as copper
The statement, Silicon conducts electricity, as well as copper, does not correct compare the two elements.
Silicon is a colorless, odorless, and stable element. It can act as both a conductor and insulator. Silicon can conduct electricity up to a certain extent. Sulfur is able to conduct less electricity. Thus as compared to sulfur, silicon is a better conductor of electricity.
Copper is said to be among the best conductor of electricity. Compared to copper, silicon is not a conductor of electricity and works as an insulator.
Silicon is present in solid state at room temperature, while argon is present as gas at room temperature.
Silicon having a weak force of attractions is less malleable than silver.
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Convert 1.350 atm into mmHg
Answer:
1026
Explanation:
Pressure
1.35
Standard atmosphere
=
1026
Millimetre of mercury
Formula
multiply the pressure value by 760
Answer:
multiply the pressure value by 760
A man decides to lose weight by dieting and exercising. He chooses to reduce his caloric intake by 500 calories a day, and he lifts weights daily as his main form of exercise. After strictly following his diet and exercise plan for two weeks, he finds that even though his waist has shrunk by two inches, he has actually gained weight. The man hypothesizes that his caloric intake is still too high. What might be another possible hypothesis?
Answer:
he's also gain weight in muscles srry if that doesn't make sense
Explanation:
study island
hi we all know what happens when you mix baking soda with vinegar but there this question on the test that says tell me why you shouldn't mix rubbing alcohol and please explain
Answer:
rubbing alcohol and bleach creates chloroform which is quite dangerous. Chloroform damages the liver, causing hepatitis, and it can also harm the kidneys, brain, heart, and bone marrow. Respiratory injuries can also come from chloroform exposure, they include respiratory depression, pneumonitis, and pulmonary edema.
The scale reads "16.121 grams", which number(s) is/are "estimated by the scale?
Answer:
See explanation
Explanation:
There are different kinds of analytical balances that read the mass of objects weighed in them to one, two, three or four decimal places as the case may be.
Most common analytical balances read the mass of objects to two or three decimal places hence the last 1 after the decimal point are likely to be approximated.
Hence, the scale may read 16.12 as the case may be.
How far is one nautical mile?
can someone help with number 5?
Please help me!!
Why are there no atoms of elements that have masses as stated on the periodic table?
Answer:
The reason increasing atomic number doesn't always equate to increasing mass is because many atoms don't have the same number of neutrons and protons. In other words, several isotopes of an element may exist
Explanation:
Hope that helps!
2. Calculating density of an object with a regular shape
While at the store, you bought a box of cookies. Because you were intrigued
you decided that you would like to find out the density of this box of cookies.
of cookies is 8 ounces or 226.8 grams. The box measures 20 cm x 8 cm x 14 cm
Show your calculations.
V=LxWxH
Which will heat the fastest and heat the slowest??
Answer:
15. Which material will heat the fastest?
The answer is C.
16. Which material will heat the slowest?
The answer is C.
Use the periodic table to compare the sizes of ionic radii with the corresponding atomic radii or other ionic radii. Choose from smaller and larger in the blanks below: A sodium cation is than a sodium atom. A phosphorus anion is than a phosphorus atom. A magnesium ion is than a sodium ion. A chlorine ion is than a phosphorus ion. A potassium ion is than a sodium ion.
Answer:smaller larger smaller smaller larger
Explanation:
Just took the test on edge
Answer:
smaller
larger
smaller
smaller
larger
Explanation:
on edge
