Answer:
468
Explanation:
From the formula, write the correct name for the ionic compound.
MgBr₂
KCl
Al₂S₃
BeCl₂
MgCl₂
GaN
CaO
BaO
AgBr
NaF
SrS
LiCl
AlP
CsI
From the Ionic compounds name, write the correct formula.
potassium chloride
magnesium bromide
aluminum sulfide
magnesium phosphide
calcium oxide
barium oxide
Answer: mgbr2 magnisum bromide
KCI potassium chloride
AI2S3 aluminum sulfide
MG3p2 magnisum phosphide
CaO calcium oxide
BaO barium oxide
Explanation:I did this one time
True or False: A charged object has a surplus or deficiency of electrons
Answer:
true I believe
Explanation: so sorry if this is wrong
What is the main purpose of the second paragraph?
3HCl(aq) + Al(OH)3(aq) = AIC13(aq) + 3H2O(1)
Based on the reaction shown above, what volume of 0.246 M
HCl is needed to titrate a 200 mL of 0.048 M Al(OH)3 solution?
mL
Answer:
117.07 ml
Explanation:
Right on ck-12
The volume of 0.246 M HCl needed to titrate 200 mL of 0.048 M Al(OH)₃ solution is 117 mL
Balanced equation3HCl + Al(OH)₃ —> AlCl₃ + 3H₂O
From the balanced equation above,
The mole ratio of the acid, HCl (nA) = 3The mole ratio of the base, Al(OH)₃ (nB) = 1How to determine the volume of HCl Molarity of acid, HCl (Ma) = 0.246 MMolarity of base, Al(OH)₃ (Mb) = 0.048 MVolume of base, Al(OH)₃ (Vb) = 200 mLVolume of acid, HCl (Va) =?MaVa / MbVb = nA / nB
(0.246 × Va) / (0.048 × 200) = 3
(0.246 × Va) / 9.6 = 3
Cross multiply
0.246 × Va = 9.6 × 3
Divide both side by 0.246
Va = (9.6 × 3) / 0.246
Va = 117 mL
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Interactivity: Hot on the Inside
Which statement accurately describes radioactive dating?
O Geologists use only one type of radioactive dating.
O Geologists compare parent and daughter elements to determine rock type.
O Geologists will measure how stable multiple parent elements can decay into multiple daughter elements.
Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products
using decay rates.
Answer:
its d and can i get brainliest plz:)
Explanation:
The statement accurately describes radioactive dating Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.
What is radioactive substance?A substance in which a unstable nuclei is contained is called as radioactive substance. Radioactive decay is a process in which an unstable nucleus loses energy by the process of radiation. There is a random process that happens in radioactive substances that is radioactivity. The type of product produced after radioactive emission depends on the type of radioactive decay.
Radioactive decay can be of different types like alpha decay, gamma decay or beta decay. Alpha particles, beta particles or gamma particle are emitted in these.
Given options are-
Geologists use only one type of radioactive dating.
Geologists compare parent and daughter elements to determine rock type.
Geologists will measure how stable multiple parent elements can decay into multiple daughter elements.
Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.
Therefore, The statement accurately describes radioactive dating Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.
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What type of bond will form between atoms of calcium (Ca) and fluorine (F)?
The Periodic Table
O A. Metallic
O B. Covalent
O C. Hydrogen
D. Ionic
Answer:
D.Ionic bond
Explanation:
Calcium is a cation. Fluorine is an anion. Calcium loses two electrons to bond with two fluorine atoms to form CaF2 ( Calcium Fluoride)
2. Jaimin takes Rs. 10000 at 12% per year as rate of interest, for 2 yean. How much interest he
has to pay at the end of two years?
Answer:
2400
Explanation:
SI=PRT
p=10000
r=0.12
t=2
si=10000×0.12×2
=2400
number of protons in uranium 340
Answer:
it is 92
Explanation:
Atomic Mass 238.029 atomic mass units
Number of Protons 92
Number of Neutrons 146
Number of Electrons 92
Answer:
92
Explanation:
because it is the 92nd element on the table it has 92 protons
When an atom gains three electrons, it becomes
help pls!!
H2O(g) → H2O(l)
The chemical equation above describes a(n) __________.
A) irreversible state change
B) physical change
C) endothermic change
D) chemical change
Answer:
C, physical change
Explanation:
take a look at the equation. Next to each form of water do you see the little (g) and (l)? These represent the state of matter the water is in. So, the water is going from a gas to a liquid. The chemical compound is the same so its a physical change, not chemical, and it is reversible. You could change the liquid water back to the gas through evaporation. Endothermic has literally nothing to do with this equation so you can easily eliminate that answer choice.
What is the mass of 3.5 moles of helium gas?
Answer:
1 mole is equal to 1 moles Helium, or 4.002602 grams.
Explanation:
Answer:
14.009.107
Explanation:
Moles to Grams helium
1 mole is equal to 1 moles Helium, or 4.002602 grams
4.002602 x 3= 12.007.806
4.002602 : 2 = 2.001.301
12.007.806+2.001.301= 14.009.107
What is a primary role of decomposers in an ecosystem?
Select one:
O a. They eliminate matter by taking nitrogen from the ecosystem.
O b. They eliminate matter by taking phosphorus from the ecosystem.
O c. They cycle matter by returning carbon and other matter to the ecosystem.
O d. They cycle matter by returning oxygen and other matter to the ecosystem.
Answer:
c
Explanation:
they use oxygen in their breakdown process and at the end of the breakdown they return nutrients like carbon dioxide and nitrogen back to the ecosystem.
Answer:
c. They cycle matter by returning carbon and other matter to the ecosystem.
Identify each molecule below as either a polar molecule or a nonpolar molecule. Explain your reasoing.
Oxygen Carbon dioxide
Answer:
Why then is carbon dioxide a nonpolar molecule while water is a polar molecule? Carbon dioxide is a nonpolar molecule because its atoms equally share the electrons. Water is polar because its atoms share the electrons unequally.
Explanation:
Oxygen and Carbon dioxide molecules are non polar.
What is Non-polarity?Non-polarity is defined as molecules in which the bonds are equal. This is
as a result of the electrons being shared equally.
In the case of Oxygen molecules, the electrons are equally distributed
between the two oxygen atoms which is a feature of a non polar
substance.
Carbon dioxide have dipoles which cancel each other out thereby
resulting in an equal distribution of electrons.
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What will happen to the gas molecules in the container as thermal energy is applied?
a-The movement, kinetic energy, and pressure of the molecules will increase.
b-The movement, kinetic energy, and pressure of the molecules will decrease.
c-The movement, kinetic energy, and pressure of the molecules will stay the same.
d-The movement of the molecules will increase, but the kinetic energy and pressure of the molecules will stay the same.
PLZ HELP I HAVE A BENCHMARK TEST!!!!
Decreased because we all know what happen if we put it with thermal energy
When thermal energy is supplied to gas molecules in the container, the movement, kinetic energy, and pressure of the molecules will increase.
Gas molecules are in constant random motion. They collide frequently which other and the walls of the container.
When thermal energy is applied, the gases move faster (acquire higher velocity). The kinetic energy also increases accordingly.
As a result of the increase in thermal energy, gas molecules collide with the walls of the container more frequently (pressure increases).
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Which of the following is an example of convection?
A. a hot oven warming the air around it
B. the rays of sun warming the earth
C. hot air rising and cooler air failing
Answer:
C. hot air rising and cooler air failing.Explanation:
Please mark my answer as a brainliest. That is the correct answer. ❤❤❤❤what is the correct lewis dot diagram for KCL
5.Are pure solids included in equilibrium expressions? Explain your answer.
Answer:
Pure solids or liquids are excluded from the equilibrium expression because their effective concentrations stay constant throughout the reaction. The concentration of a pure liquid or solid equals its density divided by its molar mass.
Explanation:
Hope this helps!!!
I need help, and fast, please.
how r u? do u like anime?
Answer:
good and yes
Explanation:
When a sample of gas is heated, its thermal energy a. increases b. decreases c. remains the same
Answer:
A) increases
Explanation:
HELLLLLLLP ASAP ITS DUE TODAAAAY :(
Answer:
the answer is j
Explanation:
Answer:
J. All of the above
Explanation:
Since the sun is tilted on it's axis, then the rays of the sun fall on the equator, directly, and that causes it to heat the equator more than the other regions.
Sometimes the sun's rays are on two tropics, Cancer and Capricorn, and that causes the Earth to heat unevenly, which causes wind and ocean currents to form.
Why do (or can) your muscles hurt after a good workout
A. The ATP causes the cells to burn extra glucose causing cell deterioration
B. There has been a build up of alcohol
C. There is an accumulation of carbon dioxide
D. There is an accumulation of lactic acid
Answer:
option C.there is an accumulation of carbon dioxide.
Explanation:
When elements form compounds, the elements
keep their original properties.
always change their physical state
react to form a new substance with new properties
combine in a random fashion
14
Answer: it's always change there physical state
Explanation:
What are the differences between ionic and covalent compounds?
Answer And Explanation:
An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms.
Question 7 of 10
What is the correct electron configuration of phosphorus (P)?
A. 1922s22p%3s 3p
B. 1922s²2p3s 3p4
c. 1s22s22p6206
O D. 1s 2s22p%3s 3p3
SUBMIT
Answer:
1s2 2s2 2p6 3s2 3p3
Explanation:
The correct electron configuration of Phosphorus (P) :
1s², 2s², 2p⁶, 3s², 3p³ or [Ne] 3s²3p³
Further explanationGiven
Phosphorus (P) element
Required
The correct electron configuration
Solution
The electron configuration of an element is primarily based on the number of electrons
Phosphorus (symbol P) has the atomic number 15
The atomic number itself shows the number of electrons and the number of protons of an atom.
atomic number = number of electrons = number of protons in neutral atoms
So that the number of electrons from Phosphorus = 15
Its electron configuration :
1s², 2s², 2p⁶, 3s², 3p³ or [Ne] 3s²3p³
Which of the following contains the most atoms?
Select one:
a. 2.9.0122 g Be
b. 39.098gk
c. 24.305 g Mg
d. 21.62gb
Answer:
b
Explanation:
Use the periodic table
Why do rats like cheese? <>-<> Im freaking out here dudes
Answer:
because its yellow
Explanation:
because rats like yellow
Why does Avogrados principle hold true for ideal gases that have small particles and for ideal gases that have large particles?
I got told if i got a lighter lit it and put it on my self that i should eat a cookie an watch :D should i do it :3
