Answer:
By checking Level.ok!!
What is the volume of as sample that has a mass of 40.0 g and a density of 4.30 g/mL?
Explanation:
density = mass/volume so volume = mass/density = 40/4.30
how many bonds are broken during in CH4
What is the Thermal Energy?
Answer:
Thermal Energy is a certain type of energy that Heats.
Explanation:
"Thermal" is derived from "Thermo" which means heat.
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Which of the items shown here will protect you from a chemical burn? Select all that apply.
A hand in a rubber glove.
A fire extinguisher.
A pair of glasses with clear shields attached on the sides.
A power source.
Answer:1 & 2
Explanation:
Answer:
A. The rubber gloves and C. the protective glasses
Explanation:
I just answered this question and it was correct.
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name two liquid fuels obtained from petroleum
Answer:
Diesel and kerosene.
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Answer:
Gasoline
Diesel
Kerosene
LPG
Rethanol
Ethanol
Butanol
Which of the following statements are not scientific hypotheses?
•Santa Claus exists.
The growth of corn in lowa depends on the amount of rain that falls.
•Theft is immoral.
•The bark of a specific tree is poisonous to mice
Answer:
.
Explanation:
Does modern industrial agriculture have a sustainable future?
Answer:
No. The aim of modern agriculture is to make a profit and be a continuing business not be sustainable to the planet. GMOs, pesticides, herbicides, monoculture, tillage, antibiotics
Explanation:
Which of these can be described as a system of stars, gases, dust, and other matter that orbits a common center of gravity?
A.) nebula
B.) asteroid
C.) galaxy
D.) planet
The galaxy is defined as a system of stars, gases, dust, and other matter that orbits a common center of gravity. Thus the correct option is C.
What is a galaxy?A galaxy is generally defined as the massive collection of billions of stars with their solar systems, gas and dust all guarded together by the center of gravity.
It is in the planet earth which is the part of our solar system we all live. The solar system is found to be the part of the galaxy called Milky Way. Our milky way galaxy also contains a supermassive black hole in the center.
There are several types of galaxies which are present in different shapes. Some of them are found to be in spiral shape and some other galaxies are seen as oval shaped and they are known as elliptical galaxies.
There are also some galaxies with irregular shapes and they are seen as blobs. It is the stars that are present inside each galaxies produces light and this massive system comprising of stars, dust gases and the matter are held by the gravity.
Thus the correct option is C- galaxy.
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What is the mass number of beryllium
Answer:
9.012182 u
Explanation:
A wind up toy that is wound up and moving
Answer:
A wind-up toy is wound up and moving across level ground. The toy is speeding up.
Explanation:
this will or should helpyou
*
Which of the following is classified as an element?
a. H20
b. Carbon
c. all of the above
d. Tea
Answer:
c is the answer because everything is an element
How do you know when a boy likes you? A. He talks to you a lot B. He is mean to you C. He hugs you a lot D. He tries to take your stuff from you
Answer:
I feel it would be C or D but more likely to be D
Explanation:
Answer:
I guess it is A he talks to u alot but boys are different so it could be each one u know?
2. How many kilometers are in 8432 meters?
Answer:
8.432 Kilometers
Explanation:
This is the answer because 1 kilometer equals to 1,000 meters:
1) Divide 8432 with 1,000
2) Once you divide, you will get 8.432 as your answer
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HURRY I WILL GIVE BRAINLIEST Which would be a common-sense practice in a lab environment? keeping quiet about accidents washing hands before the lab taking a water bottle to drink scratching one’s face during the lab
Answer:
washing your hands before the lab
If the density of a gold coin is 19.3g/cm3, what would be the density of the coin if you cut it in half?
Atoms contain positive, negative, and neutral. what happens when two positively charged particles are close together?
A.They repel each other
B.They cancel each other
C.They attract each other
D.They have no effect
Answer:
they repel each other
Explanation:
A is the ans
The anther of flower contains
Answer:
here is your answer please mark me as brainlist
Explanation:
Answer # Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.
standard units of measure for density
Answer:
g/cm³ for solids,
g/ml for liquids
g/L for gases.
Explanation:
Though SI unit of density is kg/m³, for convenience we use g/cm³ for solids, g/ml for liquids and g/L for gases. Mathematically, density is defined as mass divided by volume: ρ=m/V
The power to conduct elections is what type of power
Answer:
Unlike delegated powers, they are not listed specifically, but are guaranteed by the Tenth Amendment: "The powers not delegated to the United States by the Constitution, not prohibited by it to the States, are reserved to the States respectively, or to the people." Some traditional reserved powers include regulating ...
Explanation:
Which of these is a property of a substance that is composed of atoms that are held together by metallic bonds?
It has a low melting point.
It can be flattened and bent.
It cannot be shaped into wires.
It does not conduct electricity.
Answer:
B: it can be flattened and bent
Explanation:
Metals are malleable and can be flattened. Metals are ductile and can be deformed and bent.
Metals are bonded together by metallic bonds.
Hence a substance that is composed of atoms that are held together by metallic bonds can be flattened and bent.
The property of a substance that is composed of atoms that are held together by metallic bonds is it can be flattened and bent
What is metallic bond ?Metals are malleable, ductile substance can be deformed when it is bent down, theses are bonded by metallic bond and can be flattened.
The metallic bond is a force of attraction which is responsible for holding the atoms together, releases electrons to achieve the configuration of a noble gas.
in this type of bonding all the atoms lose their electrons from their outermost layers that move more or less freely between them, forming an electronic cloud
The metallic bond is the exceptional bond where the electrons are not present exclusively between a pair of atoms, but these are relocated among millions of them called as "sea of electrons" by cohesive bond.
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Which event always involves a chemical change A boiling B melting C conducting D burning
Answer:
burning
Explanation:
When a chemical change occurs, the matter is transformed into a new substance. When a substance is burned, it will change into something new. Thus, you know that burning is a chemical change. All the other options are physical properties. The substances may change state, but they will not change identities.
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please, please, please help! this assignment is due in a few mins and idk what to do. I will mark the first/best answer brainliest! Why do substances exist as a solid, a liquid, or a gas?
Answer:
Explanation:
The atoms and molecules in gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid
Suppose 10 atoms of carbon (C) react with 20 atoms of oxygen (O). According to the Law of Conservation of Matter, how many atoms will there be in the product of this reaction?(1 point)
A) 20
B) 15
C) 10
D) 30
Answer:
D 30
Explanation:
whenever there is a reaction, the amount of atoms don't change, because matter can't be created or destroyed. Add the carbon and oxygen atoms together
According to the Law of Conservation of Matter, there will be 30 atoms of product in the reaction.
LAW OF CONSERVATION OF MATTER:
The law of conservation of matter states that matter can neither be created nor produced in a chemical reaction. This further means that the amount of matter in the reactant of a reaction must equate that of the products. Hence, if 10 atoms of carbon (C) react with 20 atoms of oxygen (O), there will be 10 + 20 = 30 atoms of product in this reaction. Therefore, According to the Law of Conservation of Matter, there will be 30 atoms of product in the reaction.Learn more: https://brainly.com/question/24996173?referrer=searchResults
Questions
1 Describe two ways in which sodium chloride is different from sodium
frorent from chlorine
chlorine
The compound composed of these ions exhibits properties entirely different from the properties of the elements sodium and chlorine. Chlorine is poisonous, but sodium chloride is essential to life; sodium atoms react vigorously with water, but sodium chloride simply dissolves in water.
How many seconds are in .079 years? (conversation factors)
Answer:
2491344 seconds
Explanation:
By the way Google has a conversion system just in case you want to use it. Just google time conversion. It also does other types of conversion like Volume and Weight.
Which of the following is NOT an extensive property?
Answer:
Density
Explanation:
It's an intensive property because it doesn't depend on mass
What is the formula for potassium nitrate?
2. Heat is:
A. thermal energy
I B. infrared radiation
C kinetic energy
D. molecular movement.
A Potassium isotope contains 19 protons, 19 electrons and 21 neutrons. What is its mass number? 40
Answer:
17
Explanation:
you add 19+19 the subtract 21. I think
A potassium isotope contains 19 protons, 19 electrons, and 21 neutrons, so the mass number is 40 as the mass number of the atom is the sum of the protons and the neutrons, the mass number is 40.
What is the significance of the mass number in the atom?The mass number is significant as it is the sum of the number of protons and neutrons present in nucleus of an atom, which determines the atomic weight of an element and also determines its chemical properties and its position on the periodic table. Isotopes of an element have the same atomic number but a different mass number, so they have different properties than the original element.
Hence, a potassium isotope contains 19 protons, 19 electrons, and 21 neutrons, so the mass number is 40 as the mass number of the atom is the sum of the protons and the neutrons, the mass number is 40.
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Eva buys a package of food, and the nutrition label says that one serving is equal to 36 grams and has 110 Calories. However, the box is printed with a label that says 0.150 pounds. If Eva eats the whole package, how many Calories will she have consumed?
Answer:74844
Explanation:
Answer:
208
Explanation:
(110 calories × 68.04 grams) ÷ 36 grams
= 208 calories
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