Answer:
d - Meteor: A streak of light made when an object burns up as it enters earth’s atmosphere
Explanation:
The best description of what Jackson saw is a meteor which is a streak of light made when an object burns up as it enters earth's atmosphere.
A meteor is made up of rocky and sometime iron mass. They are believed to have formed since the early formation of the earth.
These objects moves with very high velocity in the solar system. When they enter the earth's atmosphere, they are burnt up and they leave a streak of light in the atmosphere. This is what is seen as a shooting starwhat 3 pieces of evidence did wegener use to support his theory
why is the
equilibrium state considered dynamic ?
Answer:
Dynamic equilibrium only occurs in reversible reactions, and it's when the rate of the forward reaction is equal to the rate of the reverse reaction. These equations are dynamic because the forward and reverse reactions are still occurring, but the two rates are equal and unchanging, so they're also at equilibrium.
Answer:
By IdowShadow the cool man
Explanation:
Dynamic equilibrium only occurs in reversible reactions, and it's when the rate of the forward reaction is equal to the rate of the reverse reaction. These equations are dynamic because the forward and reverse reactions are still occurring, but the two rates are equal and unchanging, so they're also at equilibrium
i am so confused
How are Salts formed ?
a) by the covalent bonding of neutral atoms
b) by the covalent bonding of oppositely charged ions
c) by the iconic bonding of a cation and an anion
d) by intermolecular hydrogen bonding
please get me the right answer
Answer:
I think is answer B
but you can chek
Answer:
C
Explanation:
All salts are ionic compounds. Think about NaCl. Na+ is a cation and Cl- is an anion. NaCl form an ionic compound and are then considered a salt.
what is the formulaa for H2O
Answer:
:)
Explanation:
Water (chemical formula: H2O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound, a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds.
Answer:
H2O
Explanation:
Thats the formula :P
Which element, Sulfur or Chlorine, would have the higher first ionization energy?
Answer:
Chlorine
Explanation:
Answer:
Chlorine
Explanation:
The first Ionization energy for sodium is one and one-half times larger than the electron affinity for Chlorine. Thus, it takes more energy to remove an electron from a neutral sodium atom than is given off when the electron is picked up by a neutral chlorins atom.
Limestone CaCo3 decomposes to lime according to the equation below
CaCo3 ----> CaO + CO2
(i) balance the equation above
(ii) what mass of limestone would produce 11.2 grams of lime?
Show your working
Answer:
Mass of lime produced = 19.0 g
Explanation:
Given data:
Mass of lime produced = 11.2 g
Mass of limestone react = ?
Solution:
Chemical equation:
CaCO₃ → CaO + CO₂
Balanced chemical equation:
CaCO₃ → CaO + CO₂
Number of moles of lime:
Number of moles = mass / molar mass
Molar mass of lime 56.1 g/mol
Number of moles = 11.2 g/ 56.1 g/mol
Number of moles = 0.19 mol
Now we will compare the moles of CaO and CaCO₃ from balance chemical equation.
CaO : CaCO₃
1 : 1
0.19 : 0.19
Mass of limestone react:
Mass = number of moles × molar mass
Mass = 0.19 mol × 100.1 g/mol
Mass = 19.0 g
Which of the following is a unit of distance? JUst know im not dum nor slow.....just know.
min
miles/hr
hr
km
Answer:
km
Explanation:
Answer:
miles yryryeyeueheueueueueueyeyeyeyey
what compound would form when magnesium and nitrogen combine
Answer:
magnesium nitride
Explanation:
If you have a 17% salt solution, how much salt will need to be added to 71 mL of water?
Salt added : 14.5 g
Further explanationGiven
17% salt solution
71 ml water
Required
salt needed
Solution
%mass = (mass solute : mass solution) x 100%
71 ml water = 71 g water(density = 1 g/ml)
mass solute = x
[tex]\tt 17\%=\dfrac{x}{x+71}\times 100\%\\\\0.17(x+71)=x\\\\0.17x+12.07=x\\\\0.83x=12.07\\\\x=14.5[/tex]
Please help!!!! The question is down below!
The internal combustion engine takes advantage of the ability of the combustion reaction of gasoline to do _______ and move a piston up and down.
A. free energy
B. enthalpy
C. work
D. entropy
PLS HELP ASAP THANK YOU!!!
What chemical bonds occur to get oxygen?
Explanation:
covalent bonds
Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell.
What is the average speed of a cheetah that runs 9 km in 10 minutes?
Answer:
0.9m/s
hope it helps....
After the nuclear plant in Japan failed in 2011, nuclear waste was released into the surrounding groundwater and ocean. How did this impact the surrounding human population?
A)The nuclear waste leaked into the ground and stayed in that location, affecting only humans who farmed or otherwise disturbed the soil.
B)The nuclear waste was not radioactive; therefore it did not affect the human population
C) The nuclear waste leaked into groundwater, and exposed humans to radiation that could potentially cause cancer.
D)The nuclear waste leaked into the sea and affected those exposed to seawater, but did not affect those on land
Answer:
C) The nuclear waste leaked into groundwater, and exposed humans to radiation that could potentially cause cancer.
Explanation:
your welcome girlies <33
The nuclear waste leaking into groundwater and exposing humans to radiation was how nuclear plant impacted the human population.
What is Nuclear plant?This is referred to a thermal power station in which the heat source is a nuclear reactor with radioactive elements.
The waste leaked into groundwater, and exposed humans to radiation that could potentially cause cancer which was how it affected the surrounding human population and why option C was chosen.
Read more about Nuclear plant here https://brainly.com/question/18784145
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