Answer:
the products which is formed in the given reaction is MgO ( magnesium oxide )
Explanation:
when magnesium metal reacts with oxygen present in air it burns with a white dazzling flame
to form white powder of magnesium oxide (MgO)
here's the balanced chemical reaction for it
2Mg+O2->2MgO
Which of the following is a device that
breaks down light into colors and
produces an image of the spectrum,
which can help determine the chemical
composition of a star?
A. barometer
B. phonograph
C. spectograph
D. altimeter
WILL GIVE BRAINIEST is C6H1005 + O2 → CO2 + H2O balanced?
Answer:
No! The balanced equation is given below:
C₆H₁₀O₅ + 6O₂ —> 6CO₂ + 5H₂O
Explanation:
C₆H₁₀O₅ + O₂ —> CO₂ + H₂O
The equation above is not balanced. It can be balance as illustrated below:
C₆H₁₀O₅ + O₂ —> CO₂ + H₂O
There are 6 atoms of C on the left side and 1 at the right side. It can be balance by 6 in front of CO₂ as illustrated below:
C₆H₁₀O₅ + O₂ —> 6CO₂ + H₂O
There are 10 atoms of H on the left side and 2 atoms on right side. It can be balance by 5 in front of H₂O as illustrated below:
C₆H₁₀O₅ + O₂ —> 6CO₂ + 5H₂O
There are a total of 7 atoms of O on the left side and a total of 17 atoms on the right side. It can be balance by 6 in front of O₂ as illustrated below:
C₆H₁₀O₅ + 6O₂ —> 6CO₂ + 5H₂O
Now, the equation is balanced.
Describe what happens when two negatively charged particles interact with one another. (plz help 40 points!)
Answer:
When two negatively charged particles interact with one another, the particles repel with each other. Opposite charges attract while like charges repel. A negatively charged object will exert a repulsive force upon a second negatively charged object.
Explanation:
electron configuration for Li
Answer:
the electronic configuration of Li is
=》 2, 1
and in spdf configuration it's 1s^2 2s^1
Answer: [He] 2s1
Explanation:
Electrons per shell: 2,1
Atomic number: 3
Electronegativity: 0.98
Atomic mass: 6.941 u
Discoverer: Johan August Arfwedson
Period: Period 2 element
Which of the following has the highest mass?
O 1 liter
O 1 mole
O 1 gram
1 molecule
Liters are used to measure water and a liter is about as much as a big pop bottle. Moles measure large quantities of small entities, and grams measure small things like salt.
It’s the liter
Calculate the number of atoms in 3.21 mole of Mg?
Answer:
1.93 × 10²⁴ atomsExplanation:
The number of atoms in a substance can be found by using the formula
N = n × Lwhere n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
N = 3.21 × 6.02 × 10²³
We have the final answer as
1.93 × 10²⁴ atomsHope this helps you
HELP ME PLZ IT WILL MEAN A LOT
Answer:
1. B
2.C
Explanation:
I just used logic, it's been a while since I've done this but right now I'm in Honors Chemistry and I think I have the qualifications to answer this question. Sorry if I'm wrong.
Which element, If combined with lodine, will have the greatest attraction for the lodine electrons?
C
P
B
On the periodic table, all of the elements in Group 1 are ____________
a) considered pure.
b) do not form chemical bonds.
c) have the same number of valence electrons.
I'm very confused please help
Answer:
the food chain you mean
Explanation:
pollution than mosquitoes then alligators
Convert 4.5 x 10-3 to standard Notation
Posted today at 6:30 am
1
=
Answer:
0.0045
Explanation:
Scientific notation is the way to express the large value in short form.
The number in scientific notation have two parts.
The digits (decimal point will place after first digit)
× 10 ( the power which put the decimal point where it should be)
for example 4.5×10⁻³
In standard notation
4.5 / 10³
0.0045
The expanded notation is standard notation of writing the numerical values which is normal way. The numbers are written as they are, without the power of 10.
Which of the following elements has the strongest attraction for the electrons in a bond?
(A.) hydrogen
(B.) lithium
(C.) bromine
(D.) astatine
Answer:
A)
Explanation:
Entre todos esas materias el hidrógeno es el más fuerte
The burning of a sample of propane generated 1 04.6 kJ of heat. All of this heat was used to heat 500.0 g of water that had an initial temperature of 20.0/C. What was the final temperature of the water?
Answer: 70.0°C
Explanation:
Quantity of heat = Mass * Specific heat * Change in temperature
Quantity of heat = 104.6 KJ
Mass = 500.0 g
Specific heat of water is 4.18 J/g°C
Change in temperature assuming final temperature is x = x - 20
Units should be in grams and joules:
104,600 = 500 * 4.18 * (x - 20)
104,600 = 2,090 * (x - 20)
x - 20 = 104,600/2,090
x = 104,600/2,090 + 20
x = 69.8
= 70.0°C
When using the process of evaporation to separate a mixture, what is left behind
in the evaporating dish?
Answer:
When a solution is heated, the solvent evaporates, leaving behind the dissolved solids as residue. When a solution containing dissolved solutes is heated, the solvent will evaporate. Only the solute will remain in the evaporating dish.
hope it helps! please mark me brainliest
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When using the process of evaporation to separate a mixture, solute is left behind in the evaporating dish
What is evaporation?
Evaporation is a sort of vaporization that occurs on a liquid's surface when it transitions from a liquid to a gas.
Evaporation is a separation technique that can be used to separate components of a combination including a decomposed solid in a liquid. The liquid gets evaporated, which means it is converted from a liquid to a gas. This frequently necessitates the use of heat. The solid will be all that remains after the liquid has entirely evaporated.
To more about evaporation.
https://brainly.com/question/11845221
#SPJ2
When something heats up it moves faster when something close down it moves slower
Answer:
Yes
Explanation:
Answer:
THATS WHAT SHE SAID
Explanation:
Look at the picture. If one of the lightbulbs breaks or is removed, what will happen to the other lightbulb?
2 bulbs and a battery in a single loop of wire.
Question 2 options:
It will stay on
It will go off
It will change colors
It will burn out
HERES ANOTHER FOR YOU GUYS! :)
Answer:
It will go off.
Explanation:
Since the two bulbs are connected in series with the battery, when one bulb breaks breaks the circuit hence flow of current is stopped from moving to the other bulb
what percent of the sun's energy is used by the living organism on earth
a. 1%
b. 10%
c. 20%
d. 35%
e. 50%
Answer:
1% A
Explanation:
2.1 x 10^-3 x 2 x 10^2 =
a)
4.2 x 10^-5
b)
4.2 x 10^-1
c)
4.2 x 10^1
d)
4.2 x 10^-6
Answer:
I believe it is B
Explanation:
hope it helps. please let me know if it's wrong
The primary food source for many sea animals is:
crayfish
squid
sea grass
plankton
Answer:
plankton
Explanation:
like in spongebob lol but for real I'm a marine biologist I know this is the answer lol
hi...need help....thank you..
Answer:
36 oxygen atoms
Explanation:
From the question given above, the following data were obtained:
Compound => 4Al₂(CO₃)₃
Number of Oxygen atom in the compound =?
The number of oxygen atom in the above compound can be obtained as follow:
4Al₂(CO₃)₃
Al = 4 × 2 = 8 atoms
C = 4 × 3 × 1 = 12 atoms
O = 4 × 3 × 3 = 36 atoms
From the simple illustration made above, there are 36 oxygen atoms in the compound.
5. CaCO, - CaO+CO,
Reaction Type
Answer:
(a) Decomposition: A substance breaks down to smaller species. [e.g. CaCO3(s) → CaO(s) + CO2(g) Decomposition of limestone to calcium oxide (quicklime) and carbon dioxide on heating.]
All of the following rivers are labeled on the map above except the __________ River.
A. Danube
B. Volga
C. Lena
D. Ob
For many plants, carbon dioxide is a limiting factor.
What happens when more carbon dioxide is available to plants?
1.Plant growth increases.
2.Plant growth stays the same.
3.Plant growth decreases.
4.Plant growth may increase or decrease.
Answer:
1
Explanation:
plants use carbon dioxide and if there is more then that mean the plants will have more to use and will grow faster and populate more
What is the conversion for 5 g + 3.3 mL =
Answer:
9 g/ml
Explanation:
5 + 3.3 = 8.5
But you should use sig figs.
5 has no tenths, hundredths, and etc.
Therefore the 8.5 rounds up to 9
So the answer is 9.
During ____, the chromatin condenses to make ____.
prophase, chromosomes
metaphase, chromosomes
prophase, DNA
metaphase, DNA
Find the number of moles if you have 1.2 x 1048 copper atoms.
Answer:
1.993 × 10^(24) moles
Explanation:
From avogadro's number, we have that;
1 mole of atoms contain 6.022 × 10^(23) atoms
Therefore, 1.2 x 10^(48) atoms of copper will contain;
(1.2 x 10^(48) × 1)/(6.022 × 10^(23)) = 1.993 × 10^(24) moles
1.
Many plants can reproduce asexually. How is this an advantage for the plant? Why can it sometimes be a disadvantage
for the plant? Use details to support your answer.
Answer:
Advantage and disadvantage of asexual reproduction in plant is described below in details.
Explanation:
An advantage of asexual reproduction is that the resulting plant will approach adulthood quicker. Since the new plant is emerging from a grown-up plant or plant components, it will also be stronger than a seed. Asexual reproduction can take a spot by natural or manufactured (assisted by humans) means.
The significant disadvantages of asexual reproduction are the Shortage of diversity. Following the seeds are genetically the same as the parent they are more sensitive to the same diseases and nutrient insufficiencies as the parent. All the negative deviations endure for generations.
If X is the symbol of an element, which pair correctly represents isotopes of X
Answer:
What pair???
Explanation:
Answer:
C is the pair that represent the isotopes of x
Which is the balanced version of the half-reaction below?
Answer:
The answer is B
Explanation:
Because H2S →S + 2Hplus(sand) and (Sand with water) both of them are heterogeneous
mixture isn't it?
Answer:
yes true
Explanation:
both are heterogeneous