Answer:
To the best of my knowledge, it is because of the amount of gamma rays is given off.
Explanation:
While both are isotopes, Potassium 40 gives off fewer gamma rays compared to Cobalt 60. Potassium 40 isn't really harmful to humans, but Cobalt 60 (I believe) is used in chemotherapy.
What best describes the temperature at which a solid turns into a liquid
O Melting point
O Boiling point
Electrical conductivity
Thermal conductivity
Where you would find water on Mars
Answer:
Researchers have found evidence of an existing body of liquid water on Mars.
What they believe to be a lake sits under the planet's south polar ice cap, and is about 20km (12 miles) across.
What are the names of the products in the chemical equation shown below
Answer:
Yea I don't see any answers below but when you do I would love to help too!
Explanation:
If the block were to be cut in half, what would be the
density of the smaller block?
Answer:
Density stays the same
Explanation:
The density remains the same because cutting the object in half will divide the mass & volume by the same amount. Also, the density of a substance remains the same no matter what size it is.
In chemistry she wants to know why to certain items or people shock me?
I really need help with this before 4:50
Your Uncle Danny just moved into a new apartment and wants to make his famous spaghetti sauce for his new
neighbors. Unfortunately, he hasn't unpacked all of his kitchen utensils. His recipe calls for ' a cup of
oregano, however he can only find a teaspoon to measure out his spices. How many teaspoons of oregano
would be the same as a cup?
Answer:
48 teaspoons
Explanation:
1 cup equals 48 teaspoons.
what is your definition of science?
**ANSWER AND ILL GIVE YOU BRAINLIEST ANSWER**
What is another common name for the lanthanoids on the periodic table?
A scientist studies living organisms in their natural setting
Answer:
did not
Explanation:
ask
If the density of water is 1.0 g/mL, what is the mass of 2.0 L of water?
Answer:
Density=1.0 g/mL
Volume=2.0 L
Mass=?
Density=mass/volume
Mass=density*volume
Mass=1.0*2.0
Mass=2g
Which of the following is TRUE? *
The sun gives off solar energy which solar panels can convert into mechanical energy
A roller coaster in motion has potential energy but a roller coaster waiting at the top of a drop has kinetic energy
When we exercise we burn chemical energy, but give off thermal energy
A person on a bike uses thermal energy to pedal the bike, and potential energy helps keep the tires rotating
Answer:
I believe the answer is A
Explanation:
4) If a snail averages about 0.0045 miles per hour (mi/hr), what is his average speed in meters per
second (m/s) (1 mile = 1.6 km)?
Answer:
the answer is 0.00201168 meters per second
Carbon dioxide in the air dissolves in rain as it falls to Earth. This results in the formation of carbonic acid, a weak acid. Explain why the student blowing into test tube B is similar to the process of forming slightly acidic rain.
Explanation:
Acid rain :
Acid rain is also known as acid deposition. It may be defined as a form of precipitation of the acidic components like nitric acid or sulfuric acid and fall to the earth surface from the atmosphere.
In the context, the student doing the experiment blows air in to the test tube B containing chalk dipped in water is similar to the process of acidic rain as it results in the formation of a weak carbonic acid when the carbon dioxide present in the air mixes with the chalk in the form of calcium carbonate.
Carbon dioxide reacts with water to from carbonic acid which dissociated into hydrogen ion and hydrogen carbonate ion.
Which is the electron configuration for nobelium (No)?
O [Rn]7s25414
O [Rn]7s2547
O [Ne]3s 3p
O [Xe]6s25d1
Plz help
Answer:
the answer is [Rn]7s25f14 (first option)
Explanation:
i took the test
The electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴, hence the correct option is A.
What is electronic configuration?The distribution of an element's atoms' electrons throughout several atomic orbitals is symbolically represented by the electronic configuration of that element.
A standardized nomenclature is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital, which is expressed in superscript.
The atomic number of nobelium (No) is 102.
The number of protons is equal to the atomic number, which is 102.
The number of electrons is equal to the number of protons, which is 102.
Therefore, electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴.
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The given question is incomplete, so the most probable complete question is,
Which is the electron configuration for nobelium (No)?
A. [Rn]7s²5f¹⁴
B. [Rn]7s²5f⁷
C. [Ne]3s²3p⁷
D. [Xe]6s²5d¹
story that explains an example of a scientific method
Answer:
I don't understand you question
Which Statement correctly describes protons
A.They no charge and are present in the nucleus of an atom.
B.They have a negative charge and travel around the nucleus
C.They have a positive charge and travel around the nucleus of an atom
D. They have a positive charge and are present in the nucleus of an atom along with the neutrons
Answer:
D.
They have a positive charge and are present in the nucleus of an atom along with the neutrons.
explanation:
Protons have a positive charge.
I really need help
Christina is so excited about her wedding that she tells her coworker Meredith it is exactly 43,200 minutes away. Help Meredith figure out how many days away the wedding is so that she can add it to her calendar.
Answer:
30 days
Explanation:
43200÷1440 ( minutes in a day)
the anwer will came after cutting out is 30 which means 30 days
plz mark me brainleast
WILL MARK BRAINLIEST
10. When 5.1 x 10^-3 is subtracted from 1.0051 the difference is:
a) 1.0000
b) 1.000
c) 1.00
d) 1.0
To find the difference between 1.0051 and 5.1 x 10⁻³, subtract the second number from the first number from its decimal form.Thus, the correct option is A.
First, convert 5.1 x 10⁻³to decimal form:
5.1 x 10⁻³ = 0.0051 is the decimal form of the given number 5.1 x 10⁻³.
Then subtract the 2 numbers that is,0.0051 from 1.0051:
1.0051 - 0.0051 = 1.0000 which has 4 digits after the decimal.
So, the difference between the two numbers 1.0051 and 5.1 x 10⁻³ is 1.0000.
Thus,the correct option is a) 1.0000 which is the difference between 1.0051 and 5.1 x 10⁻³.
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Which characteristic best explains why gases are more compressible than liquids or solids?
A Gas particles tend to attract one other, while liquid and solid particles tend to repel each other.
B. Gas particles tend to be separated by larger distances than liquid or solid particles are.
C Gas particles tend to move more rapidly than liquid or solid particles do.
D. Gas particles tend to clump together as their temperatures increase
Answer:B
Explanation:
Answer:This chapter begins the first where we will look at matter on a microscopic scale. Matter is made of small particles of atoms or molecules. There are three common states of matter, solid, liquid and gas. A gas and a liquid will change shape to fit the shape of their container. A gas will change volume to fit the volume of the container.
Explanation:
In general, solids are denser than liquids, which are denser than gases. . The particles in the solid are touching with very little space between them. The particles in a liquid usually are still touching but there are some spaces between them. The gas particles have big distances between them.
Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. Their vibration is related to their kinetic energy. In the solid the particles vibrate in place.
Liquid – In a liquid, particles will flow or glide over one another, but stay toward the bottom of the container. The attractive forces between particles are strong enough to hold a specific volume but not strong enough to keep the molecules sliding over each other.
Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles. This means that a gas has nothing to hold a specific shape or volume.
(A fourth state of matter, called plasma, exists when a gas becomes ionized. Plasma exists inside stars and in interstellar gases.)
A given volume of methane diffuses in 20 seconds How long will it take the
same volume of sulphur (IV) oxide to
diffuse under the same condition
(Methane = 16, Sulphur (IV) oxide=64)
Explanation:
Relative molecular mass of CH4 = 12 * 1 + 4 = 16
Relative molecular mass of SO2 = 32 + 10 *2 = 64
tSO2/tCH4 = √MSO2/MCH4
t/20 = √64/16 = √4
t/20 = 2
∴ t = 20 * 2 = 40sec
HELP PLEASE!!!
what is the density of a cube that has the volume of 12mL and a mass of 6g? express in g/mL
Answer:
The density of the cube is 0.5g/mL. Hoped this helped! :)
Explanation:
V= 12.0mL D=M/V
M= 6.0g
D= 6.0g/12.0mL
D= 0.5g/mL
Question 3
A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?
Answer:
Curd is acidic in nature, because an acidic substance has less value of pH. A milkman adds a very small amount of baking soda to fresh milk. Why does he shift the pH of the fresh milk from 6 to slightly alkaline? Answer: By making the milk more alkaline, it takes more time to turn into curd.
Which of the following is a unit of mass in the metric system? (4 points)
Gram
Ounce
Pound
Ton
Increasing the temperature of a solution will slow down the dissolving/dissolution of the solute.
True
False
Answer:
False
Explanation:
It will actually speed it up
Members of group # ___ do not form ions or react with other elements.
Answer:
VIIA group donot form ions or react with other elements. This group is also called noble gases or inert gases which donot take part in chemical reaction.
Briefly summarize how heavy elements are created
Answer:
Heavy elements are created by fusing two elements together in a lab. They look for “events” that comprise a series of alpha decays that result in spontaneous fission.
Explanation:
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, in below given ways we can summarize how heavy elements are created.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
Elements heavier than iron cannot be created by fusion because the reaction requires energy to occur. We do, however, perceive elements other than iron all around us. This is accomplished by supernova explosions, which result in neutron capture processes and the production of heavy materials.
Therefore, in above ways we can summarize how heavy elements are created.
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Need help with this question using dimensional analysis
Find the exact value. tan(−300∘)
Explanation:
tan(-300) = tan(-300+360) = tan (60)
here we added 360 degree. where by adding 360 +or- (n×360) to the any angle nothing will change as they called equivalent angles
equivalent angles is by adding +or- n×360 to any angle is equivalent to that angle so tan(-300) = tan(60) then we will calculate tan(60) on the calculator
Match the following properties with the type of property they are (chemical or physical) or the type of change the substance is undergoing (chemical or physical).
reacts with base-
smell-
color-
boiling point-
fruit rotting-
dissolving kool-aid powder-
reacts with water-
iron rusting-
water freezing-
1.
Chemical Property
2.
Physical Property
3.
Chemical change
4.
Physical change
Answer:
Chemical property
Iron rusting Fruit rottingPhysical property
Boiling point Water freezingChemical change
React with waterReact with basePhysical change
Color Smellfind the odd one out and explain the reason why ? sand , sugar , salt , baking soda
Answer: Sand
Explanation: Out of all the choices, sand is the only one that cannot react with other substances.
Answer:
sand
Explanation:
all are used mostly in cookin and preparing things and are in the kitchen