Which of the following statements is true? Atoms of isotopes of an element have different numbers of electrons. Atoms of isotopes of an element have different numbers of neutrons. Atoms of the same element all have the same mass. Atoms of isotopes of an element have different numbers of protons.
Answer:
atoms of isotopes of an element have different numbers of neutrons.
Explanation:
isotopes have the same number of protons, but different numbers of neutrons.
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Atoms of isotopes of an element have different numbers of neutrons.
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.
One element can have isotopes of its own. Isotopes are the atoms of element with same atomic number but different mass number. Example Hydrogen has three isotopres like hydrogen, deuterium and tritium with mass number 1, 2 and 3 respectively. Atoms of isotopes of an element have different numbers of neutrons.
Therefore, atoms of isotopes of an element have different numbers of neutrons. The correct option is option B.
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The light bulb converts electrical energy into light and _________
Answer:
The light bulb converts electrical energy into light and heat energy
How many centimeters are in 15 3/8 inches.
Answer:
39.0525 Cm
Explanation:
Answer:
15 3/8 inches into cm: fifteen and three eights inches are equal to 15 3/8 x 2.54 = 39.0525 centimeters.
Explanation:
hope this helps, have a nice day, please mark me brainliest
what is the mass number notation for silicon ?
Answer: atomic number 14 and atomic mass 20.086
Explanation:
Have a graph
What step will decrease the pressure of gas inside and close cubicle container?
Answer:
According to Gay-Lussac's Law The pressure of the gas increases with increase in temperature of the gas when volume of the gas is kept constant
Explanation:
Which properties describe elements that are nonmetal gases?
Answer:
Explanation:
Nonmetals share many similar properties including:
They are either gas (hydrogen, oxygen, nitrogen) or solid (carbon, sulfur) under standard conditions.
They are not good conductors of electricity or heat.
They are very brittle in their solid form.
They are not malleable or ductile.
Which description refers to fog?
burns off when it gets dark
extends up to 10 miles into the sky
is found in areas near bodies of water
forms when the ground warms at night after a cool, dry day
Answer:
The correct option is;
Is found near bodies of water
Explanation:
Fog forms as an aerosol which is visible to the eye that normally consists of tiny condensed water vapor droplets or crystals of ice that is formed when air that is warm comes in contact with cool air close to the Earth's surface. Fog can be taken as a stratus like cloud that lies close to the Earth's surface and it normally forms due to the presence of water bodies that are nearby, the topography of the area or the conditions of the wind.
C. Is found near bodies of water
what is neons destiny and mohs hardness
The number of electrons in each of Neon's shells is 2, 8 and its electronic configuration is 1s2 2s2 2p6.
...
Neon Properties.
Melting Point: -248.59°C, -415.462°F, 24.56 K
Neon's destiny is to produce vibrant and attractive colors in neon signs, while Mohs hardness is a scale used to measure the hardness of minerals, and it does not apply to the element neon.
Neon's destiny refers to the role or purpose of the element neon in the natural world. Neon is a noble gas that is commonly used in neon signs due to its vibrant red-orange color when electricity is passed through it. Its destiny, in this context, is to create visually appealing and eye-catching signs.
On the other hand, Mohs hardness is a scale that measures the hardness of minerals. It was developed by Friedrich Mohs in 1812. The scale ranges from 1 to 10, with 1 being the softest and 10 being the hardest mineral.
Now, let's discuss the Mohs hardness of neon. Neon is an element, not a mineral, so it does not have a specific Mohs hardness value. The Mohs hardness scale is specifically designed for minerals, not elements. Therefore, we cannot assign a Mohs hardness value to neon.
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The diagram shows the moon and Earth in space. Which is the best label for the dotted-line arrow?
O force of Earth's gravity
O moon's attraction to the Sun
moon's motion without gravity
O orbit of the moon around Earth
arth
Answer:
The answer is c) moon’s motion without gravity
Explanation:
I just took the quiz and I got 100 percent on Edgenuty :)
The dotted-line arrow is representing the path the moon would take if there was no force of gravity on the earth. Therefore, option (C) is correct.
What is gravity?Gravity can be explained as a force that attracts an object toward the center of the earth or any physical system that has mass. Each body with mass exerts a force or gravity on every other body with mass. Gravity is the force that keeps the moon around the earth and the planets in orbit around the sun.
In the universe, each particle with mass attracts another particle with a definite force, and that force acting is a product of the masses of those bodies.
Mathematically gravity acting between masses can be written as:
[tex]F =G\frac{q_1q_2}{r^2}[/tex]
Where F is the force, m and M are masses, G is the universal gravitational constant and r is the separation between them.
If the moon follows the dotted arrow which moves straight ahead it can be only possible if the moon's motion is without gravity.
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What are two properties of liquids, solids, gases and matter. What are two important things about them.
What are examples and non-examples of stars?
Answer:
Explanation:
Good Example of a Star- The sun, Star Clusters, The North Star
Bad Examples of a Star-Earth, Galaxies, Solar Systems
Examples of stars: Sun, Stars.
Non-examples of stars: Earth, Moon, Planets.
Why Sun is a star?The Sun, a 4.5 billion-year-old yellow dwarf star and the center of our solar system, is a hot, burning ball of hydrogen and helium. It is the only star in our solar system and is located approximately 93 million miles (150 million kilometers) from Earth. On our home planet, life as we know it would not be possible without the energy of the Sun.Despite being the hub of our solar system and crucial to our existence, the Sun is simply an average-sized star. There have been found stars up to 100 times bigger. Additionally, many solar systems contain multiple stars. Scientists can learn more about the workings of far-off stars by examining our Sun.As a star, the Sun doesn’t have any moons, but the planets and their moons orbit the Sun.To learn more about the sun, refer to https://brainly.com/question/15837114
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NEED THIS DONE ASAP HELP A GIRL OUT!
Answer:
5) electrons
6) protons
7) neutrons
8) electrons
sorry honey, I don't know 4
Please help answer this question correctly. My life depends on it!
Answer:
I looked it up so the answer is for sure A
Explanation:
What is the mass of 23 moles of lithium atoms
Take 23mols and multiply it by the atomic mass of Li:
23mol * 6.94g/mol = 159.62g
While participating in a blood drive at school, Keona learns that blood has a density of 1.06 g/mL. She donates one pint of blood, which is equal to 473.176 mL.
What is the mass of the blood Keona donates, to the nearest hundredth of a gram?
The mass of the blood Keona donates is
g.
Answer:
501.57g because g=1.06×473.176
Explanation:
Answer:
the other person was right
Explanation:
Plz help!
What needs to be added or taken away to cause a change in state?
Answer:
One change of state happens when you add energy to the substance. This change of state is called melting. By adding energy to the molecules in a solid the molecules begin to move quicker and can break away from the other molecules.
How much of the moon's bright side can you see during a new moon?
A: 0 percent
B: 10 percent
C: 50 percent
D: 100 percent
Answer:
C 50 percent
Explanation:
A. 0 percent
the moon and the sun aren't lined up on a new moon.
ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST
Rhenium(Re) is made up of 37.4% 185Re and 62.6% 187Re.
The atomic mass of 185Re is 184.953 amu. The atomic mass of 187Re is 186.956 amu.
What is the average atomic mass of rhenium?
186.00 amu
186.207 amu
186.397 amu
187.00 amu
Which statement best describes heat and thermal energy?
They are different words for the same thing.
They represent different concepts.
Heat is what happens when thermal energy stops moving between substances.
Thermal energy is what happens when heat moves between substances.
Thermal energy is what happens when heat moves between substances.
Further explanationThermal energy usually refers to the temperature of an object which indicates the energy it has
Temperature is used as a guide to the level of thermal energy from objects
While heat is the transfer of thermal energy
Heat moves when there is a difference in temperature
The amount of heat is influenced by the mass of the object and the difference in temperature
Can be formulated :
Q = m.c.ΔT
Q: heat received or removed by an object (J)
m: object mass (kg)
c: heat type substance (J / kg⁰C)
ΔT: temperature change (⁰C)
Answer:
I dont know why the other one has 5 starts but the answer is They represent different concepts.
is this correct or am I wrong. say something if it's wrong.
Answer: Light waves are correct, sounds waves are not.
Explanation: Sound waves are close to light waves however they are closer together, hope this helped :)
Seems about correct to me.
help please.........
Answer:
4625 J
Explanation:
The period on the periodic table(1-7) tells you the number of ________ in an atom.
A. energy levels
B. electrons on the last energy level
Answer:
Electrons on the last energy level.
The period on the periodic table (1 to 7) tells the number of energy levels in an atom. Therefore, option A is correct.
What are periods in the periodic table?The horizontal rows in the modern periodic table are known as periods. All elements placed in a particular period have an equal number of electron shells. Each next element exceeds one proton in a period and so exhibits less metallic character than its precursor.
The atomic number of the elements increases from left to right in a period that gives information about the number of electrons and protons increases in an atom. As in a period, elements have filled an equal number of electron shells, but an increased electron in the same shell causes an increase in the nuclear charge. Therefore, the atomic radius of an element of the elements reduces in a period.
Therefore, the elements in the same period (1 to 7) have the same number of electron shells or energy levels.
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can anyone help me with this question. is there anybody who is an expert in science??
Answer:
Explanation:
GIVEN ; FORCE = 2000 NEWTON
DISPLACEMENT = 10 M
TIME = 50 SECONDS
AS WE KNOW , POWER = WORK / TIME
= WORK = FORCE × DISPLACEMENT = 2000 × 10
= 20000 JOULES
THEN, POWER = 20000/ 50
SO, POWER = 400 WATT ( JOULES / SECOND )
Most of the carbon on the Earth is stored in volcanoes, True or False?
Answer:
true
Explanation:
Volcanos is rock and there's where the carbon stored at.
the number of valence electrons in an atom with an electron configuration is 1s2 2s2 2p6 3s2 3p4
Answer:
6 valence electrons
Explanation:
The atom you have given is a sulfur atom. It has 6 valence electrons.
2.l
A certain solid has a volume of 35.7 cm and weighs 85 grams. What is its density?
Answer:
The answer is 2.38 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass of object = 85 g
volume = 35.7 cm³
We have
[tex]density = \frac{85}{35.7} \\ = 2.380952...[/tex]
We have the final answer as
2.38 g/cm³Hope this helps you
ethane is a substance that is used when making plastic. a molecule of ethane is made of two carbon atoms and six hydrogen atoms. the carbon atoms are joined by the chemical bond. each of the hydrogen atoms is joined to one of the carbon atoms by a chemical bond. which is an accurate model of ethane?
Help ASAP!!!
Answer:
C
Explanation:
Option C is an accurate model of ethane.
Ethane is an alkane that has two carbon atoms bonded together and each atom has three hydrogen atoms that are attached to them. Ethane has single bonds and that makes it an alkane.
This model of ethane has six carbon-hydrogen bonds shown with solid lines that are protruding out. Rotation that takes place about the carbon-carbon bond actually results in the different molecular conformations of ethane.
Produces both urea & bile.
Answer:
Liver
Explanation:
The liver is an accessory digestive organ that is involved in detoxifying metabolites from the blood. It also produces compounds necessary for digestion. Some of these products include urea and bile.
Select the correct answer. Consider an atom that has an electron in an excited state. The electron falls to a lower energy level. What effect does that have on the electron? A. The electron releases energy in the form of light. B. The electron absorbs energy in the form of light. C. The electron retains its energy without any change. D. The electron transfers its energy to other electrons.
Answer:
A
Explanation:
The more energy u give the more the electron is able to get far away from the nucleas. So the opposite happens when u take away some energy, it will falll on lower energy state and will radiate the energy difference in form of a photon/light.
Weight is a measure of the pull of gravity on and object
Answer:
True.
Explanation:
You didn't provide an answer, but I'm assuming this is a T/F question.