AnswerElement Symbol # of Atoms
Magnesium Mg 1
Oxygen O 4
Sulfur S 1
:
Explanation:
Which describes the dissolving process? (Choose all that Apply)
A) All molecules are in constant motion, so they run into each-other.
B) Molecules bond with the solvent forming a chemical reaction.
C) Collisions of molecules is what makes a substance dissolve
D) Molecules of the solvent bombard molecules of the solute.
Answer:
A and D
Explanation:
I took the test, and choose both B and C and got it wrong
A sample of metal is heated until it melts and begins to glow red. When it cools, it appears the same color as it did before it was heated. This is evidence that a chemical reaction occurred. is it true or false
Answer:
Explanation:
trueeeeeeeeeeeeeeeeeeeeeeeeeee
What is the octet rule? What is it based on?
Answer: The octet rule is a chemical rule of thumb that reflects the observation that main group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
Explanation:
what happens when the graham crackers and rice krispie bar meet ?
Answer:
They make a rice Krispe gramcracker bar baby
Explanation:
Answer: When they meet they instantly fall in love, (lol) and have a baby.... They name the baby S'more because it has features from the graham cracker and the rice krispie.
Stay safe and have a Merry Christmas!!!!!!!! :D
Maybe a S'more rice krispie.....
How many moles are in 0.0688 g of silver chloride (AgCl)
Answer: 0.00048
m
o
l
Explanation:
Moles = Mass/Molar mass
n
=
m
M
r
=
0.0688
107.87
+
35.5
=
0.00048
m
o
l
I need help w this pls
Answer:
70..... I think
Explanation:
Cuz if the bus travels 35 km every 30 mins this means that it travels 70 km per hour
is detergent unicellular
Answer:
It is not unicellular
Explanation:
Because it is not a living thing.
What is kinetic energy?
Which of the following explains the difference between genes and chromosomes
А Chromosomes are made of genetic material and genes are made of only proteins
B Genes determine a person's specific traits, and chromosomes hold the genes C Genes are found in the nucleus, and chromosomes are found in the cell wall
Answer:
B Genes determine specific traits while the chromosomes contain these genes
tas watches as his uncle changes a flat tire on a car.
Answer:
tas should help his dad
Suppose a snack bar is burned in a calorimeter and heats 2,000 g water by 20 °C. How much heat energy was released?
Heat energy released : 167.2 kJ
Further explanationHeat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
m = 2000 g
c = 4.18 J/ g ° C
∆t = 20 ° C
[tex]\tt Q=2000\times 4.18\times 20\\\\Q=167200~J=167.2~kJ[/tex]
Question 9 of 10
What is the lowest energy level that contains dorbitals?
A. 3
B. 2
C. 4
D. 1
Answer:
3 is the minimum of energy level that contains dorbitals
Answer:
A 3
Because d is 3rd orbital it is present in third shell
Explanation:
PLEASEEEEEEE HELP ITs SUPER IMPORTANT I NEED IT PRETTY PLEASE
Answer:
c I think I hope it helps
Which of the following statements is NOT true about Olympus Mons?
It is 3 times as high as Mount Everest.
O Its base is about the same size as Arizona.
It is the largest mountain in the solar system.
It have never erupted.
Answer:
The largest of the volcanoes in the Tharsis Montes region, as well as all known volcanoes in the solar system, is Olympus Mons. Olympus Mons is a shield volcano 624 km (374 mi) in diameter (approximately the same size as the state of Arizona), 25 km (16 mi) high, and is rimmed by a 6 km (4 mi) high scarp.
Explanation:
The Great Plains are also referred to as____.
Answer:
The interior plains
Answer:
interier plains
Explanation:
PLEASE HELP ME PLEASE I NEED THE ANSWER QUICK
Answer:
d
Explanation:
What is your opinion on Mercury element
Answer:
Mercury is an liquid metal
Explanation:
Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum.
Symbol: Hg
Sodium (Na) and iodine gas (I2) react to form sodium iodine (NaI).
Which equation is a correct representation of the balanced equation?
2Na+I2→2NaI
I2→2NaI+2Na
Na→NaI+I2
NaI→2Na+I2
Answer:
2Na+I2→2NaI
Explanation:
6CO2, 6H2O, and energy are the result of aerobic respiration.
Please select the best answer from the choices provided
T
or
F
Answer:
True
Explanation:
I did the test and got 100
Answer:
True!
Explanation:
The atomic number of an element is 15. What is the likely arrangement of the valence and core electrons in a neutral atom of this element?
The element has :
core electrons : 10valence electron : 5 Further explanationValence electrons : electrons used in forming bonds (the outer shell)
Core electrons : electrons that belong to atoms except for valence electrons. It is located close to the core and fills the inner shell.
Electron configurations for an element with the atomic number: 15 1s²2s²2p⁶3s²3p³
Neutral atoms ⇒ atomic number= number of protons=number of electrons
The electron configuration shows that the valence electron of the element = 5(3s²3p³) so the number of Core electrons:
Core electron = atomic number (total number of electrons) - valence electron
Core electron = 15 - 15
Core electron = 10
What does this image represent?
Answer:
Its the second one.
Explanation:
What is the weight of a 15kg object on Earth.
Answer:
dang this was a week ago
Explanation:
lol
What do atomic-scale models show you that your observations of properties cannot?
The amount of protons in an atom's nucleus is what is known as the atomic number, according to models at the atomic scale. The identification of an element is determined by its proton count.
What is atomic-scale model?Everybody is aware that the things around us are formed of matter. We also know that the three subatomic particles are electrons, protons, and neutrons. But an atom has where all of these subatomic particles live. This essay will address all of these questions and describe how important Atomic Model breakthroughs were produced.
In order to better define and comprehend the atomic structure, we have developed five fundamental Atomic Models. The amount of protons in an atom's nucleus is what is known as the atomic number, according to models at the atomic scale. The identification of an element is determined by its proton count.
Therefore, the amount of protons in an atom's nucleus is what is known as the atomic number, according to models at the atomic scale. The identification of an element is determined by its proton count.
To know more about atomic-scale model, here:
https://brainly.com/question/618630
#SPJ2
An organisms ___________ adaptations are its physical traits that help it survive in its environment.
A.) abiotic
B.) energy
C.) behavioral
D.) structural
Answer:c
Explanation:
I think
Sodium hydroxide solution was added to dilute hydrochloric acid. The pH of the solution in the flask was measured at intervals until no further change of pH took place. What would be the pH change in this reaction?
Answer:
The pH change will be neutral. I.e pH of 7.
Explanation:
The pH change will be neutral because reaction between hydrochloric acid and sodium hydroxide will result in the formation of sodium chloride salt and water. Sodium chloride salt and water is neutral because reaction between strong acid(pH is acidic) and strong base( pH is basic) will produce neutral salt with pH of 7. This salt does not hydrolyze.
Which energy output objects work with the solar panels?
Answer:
A converter to convert from dc to ac
Explanation:
what is SI unit of e.m.f and p.d.
Answer:
Electromotive force or e.m.f is defined as the battery's energy per Coulomb of charge passing through it. like other measures of energy per charge emf has SI unit of volts , equivalent to joules per coulomb.
Charge is important when covalent bonds form
true
False
What is the volume of 45g of benzene, C6H6 at 100°C and 250 Torr?
Answer:
V = 53.82 L
Explanation:
Given data:
Mass of benzene = 45 g
Temperature = 100°C (100+273 = 373 K)
Pressure = 250 torr (250/760 = 0.33 atm)
Volume of benzene = ?
Solution:
Number of moles of benzene:
Number of moles = mass /molar mass
Number of moles = 45 g/ 78.11 g/mol
Number of moles = 0.58 mol
Volume of benzene:
PV = nRT
V = nRT/P
V = 0.58 mol × 0.0821 atm.L/mol.K × 373 k / 0.33 atm
V = 17.76 atm.L /0.33 atm
V = 53.82 L
How many moles are in 150.0 grams of Fe2O3
Answer:
0.9
Explanation:
used a calculator that calculates that
I put 1 star by accident lol, but it was 0.93933052035153 if you want to be exact I just rounded it
