Answer:
Chemical (you should mark me brainliest lol)
Explanation:
Chemical properties can only be measured by changing substances chemical identity.
The compound whose molecules have the highest average kinetic energy is?
Answer:
C)
Explanation:
The warmer the molecules, the higher the average kinetic energy.
"As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles. This is registered as an increase in the temperature of the substance." -lumen learning
(I know for sure but what think... hope this helped)
How much eat is absorbed when 50.0g of water changes from 25.0 Celsius to 37.0 Celsius?
Which of the following statements are incorrect?
A. A sodium atom has a smaller radius than a potassium atom.
B. A neon atom has a smaller radius than an oxygen atom.
C. A fluorine atom has a smaller first ionization energy than an oxygen atom.
D. All are statements are incorrect
b is the answer because oxyen atom has a smaller radius
Answer: B
Explanation:
Apart from boiling point and flammability, what other quality does the size of the molecules in hydrocarbons affect?
Answer:
Viscosity
Explanation:
Sijui kuexpalain lakini
Answer:
Explanation:
apart from boiling point and flammability viscosity density and solubility are those qualities of hydrocarbon which are effected by their size
What’s the density in g/cm^3
Answer:
0.0027 gram/cubic centimeter
cc=ml
Explanation:
pls vote brainliest ❤❤
Select the correct answer
Giving brainliest
Answer:
D
Explanation:
How many electrons does each atom have? What group is each in?
In an atom, the electron's spin around the center, also called the nucleus. The electrons like to be in separate shells/orbitals. Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell, three can hold a maximum of eight electrons. ( This is the answer to both questions!)
Refer to the above image. Which of these is NOT found in the nucleus of an atom?
A
Neutrons
B
Protons
С
Atomic mass
D
Electrons
Answer:
Atomic mass
Explanation:
I got it right on my test
How can you move a object without making contact?
Answer:
The Force
Explanation:
Lithium has two isotopes, lithium-6 weighing 6.015 amu (7.5% abundance), and lithium-7
weighing 7.016 amu (92.5% abundance). What is the atomic mass of lithium?
with calculations
Answer:
The answer is 6.941 but I dont really have the explanation
Explanation:
The atomic mass of lithium will be 6.9458 amu.
What is Atomic Mass ?
The mass of an atom of a chemical element expressed in atomic mass units.
It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
Calculation :
Consider 10000 atoms of Li ;
742 of them would have mass 6.02.9258 of them would have mass 7.02.
Hence,
The total mass of these 10000 Li atoms would be ;
(742 × 6.02) + (9258 × 7.02) = 69458
∴ 1 Li atom on average would have mass = 69458 / 10000 = 6.9458 amu
Therefore, The atomic mass of lithium will be 6.9458 amu.
Learn more about Atomic Mass here ;
https://brainly.com/question/17067547
#SPJ2
define open and closed circuit
Answer:
An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout. A device designed to open or close a circuit under controlled conditions is called a switch.
What is the density of a 6 g of pure copper with a volume of 12 mL?
a 0.25 g/mL
b 1.5 g/mL
c 2.3 g/mL
d 0.5 g/mL
Answer:
The density of copper is 0.5 g/mL
Explanation:
Given data:
Mass of copper = 6 g
Volume of copper = 12 mL
Density of copper = ?
Solution:
Formula:
d = m/v
d = density
m = mass
v = volume
d = 6 g/ 12 mL
d = 0.5 g/mL
Thus, the density of copper is 0.5 g/mL
Perform the following
mathematical operation, and
report the answer to the correct
number of significant figures.
7.68 x 4.564 = [?]
Answer:
35.05152
Explanation:
Answer:
35.1
Explanation:
I put that answer in and it was correct.
7th grade help me plzzzzzzzz
Answer:
1. Metals
2. Solid, gas, liquid
Explanation:
For #1:
The majority of elements in the periodic table are classified as metals. The transition metals lie in the center of the table, spanning groups three through 12. These elements are solid at room temperature, except mercury, and have the metallic color and malleability expected of metals.
Hope this helps :)
Which of the following is the best insulator?
Group of answer choices
copper
aluminum
gold
wood
Answer:
wood
Explanation:
hope this helps! good luck on ur test :)
Answer:
Wood
Explanation:
Select The TWO answers that are correct, Put trust in your answer brainliest
Answer:
B and C
Explanation:
Answer:
Cumulonimbus and Cirrus clouds
Explanation:
What is the function of enzymes in living organisms?
Answer:
jh
Explanation:
Select from the drop-down menu to correctly complete the statement.
Some multicellular organisms like plants and animals have specialized cells. This means that cells have very specific jobs. Think: My heart cells have a different job then my lung cells.
If an organism has specialized cells, its cells
A. do not have any function
B. are all the same
C. have specific jobs
Answer:
C. have specific jobs
Explanation:
If an organism has specialized cells, then the cells performs specific jobs.
A group of cells that performs a specific job is called tissues.
In higher organisms, cells are specialized for specific purposes in them. This is to ensure that cells are optimized to carry out certain functions. Specialization of cells usually occurs by cellular differentiation when an organism begins to form.Which is the best description of a molecule?
Answer:
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.
Answer:
C
Explanation:
Which method of fossilization preserves the most detail of an organism?
petrified fossils
frozen or mummified fossils
trace fossils
hollowed fossil cavities
these are the choices
Answer:
B. frozen or mummified fossils
This is the correct answer :)
Answer:
B the answer
Explanation:
frozen or mummified fossils
Consider the equation:
Ca+O2→CaO
What needs to be done in order to balance the equation?
Place a 2 in front of the Ca and the CaO.
Place a 2 in front of the O2 and the CaO.
Place a 2 in front of the CaO only.
Place a 2 only in front of the Ca.
Which of the following substances is used up during photosynthesis?
a
Oxygen
b
Sugar
c
Sulfur dioxide
d
Water
Answer:
i am pretty sure it is a.Oxygen
Explanation:
Why are supergiant so bright?
Because supergiants are so massive, the core temperature gets much hotter than in giants, so supergiants can fuse elements heavier than hydrogen and helium. But to support their tremendous mass, supergiants burn up their fuel much more quickly.
Answer:
because the core tempature gets much hotter.
Explanation:
so supergiants can fuse elements heavier than hydrogen and helium. But to support their tremendous mass, supergiants burn up their fuel much more quickly.
How can electronegativity be used to explain the reaction we see in terms of the numbers and types of bonded being formed in lithium?
Explanation:
Lithium is an electropositive element that readily loses electrons.
Oxygen is electronegative and it will readily accept electrons.
Due to this significant electronegativity differences between the two species they form electrovalent or ionic bonds between them.
2atoms of Li lose two electrons:
Li → Li²⁺ + e⁻
Lithium isoelectronic with helium
For oxygen;
O + 2e⁻ → O²⁻
Oxygen is isoelectronic with Neon
Two ions of the lithium combines with the oxygen to form the bond;
4Li + O₂ → 2Li₂O
The electrostatic attraction between the two ions forms the ionic bond
Name attributes of cirrocumulus clouds
Answer:
Cirrocumuli are high-level clouds appearing as a formation of small masses of white or pale blue, fleecy clouds in a globular, wavelike, rippled pattern, usually in regularly arranged groupings. However, unlike cirrus or cirrostratus they are always broken up into tiny elements and ripples.
Which among the given gases will effuse faster
How do slab pull forces affect plate motion? Choose the correct answer.
Uplifted mantle causes plates to move apart.
Convection currents drive the plate downward to move it.
Earthquakes break the crust into smaller plates to make motion easier.
The weight of the subducted plate produces a force to continue moving the plate.
Answer:
The weight of the subducted plate produces a force to continue moving the plate.
Explanation:
How many atoms are in 9.01 grams of
Beryllium (Be)?
Answer:
the atomic number is 4
Explanation:
the atomic number is 4, thus beryllium contains 4 electrons and 4 protons.
How does a balanced chemical equation demonstrate conservation of mass?
Answer:
A balanced chemical equation will demonstrate the law of conservation of mass because the amount of elements on one side (reactants) will equal the amount of elements on the other side (products).
Explanation:
CH₄ + 4Cl₂ -> CCl₄ + 4HCl
Reactants:
1 C
4 H
8 Cl
Products:
1 C
4 H
8 Cl
help please I will give brainliest to the best answer
Answer:
the correct answer is D