Answers
My key
Synthesis Reactions = SR
Decomposition Reaction = DR
Single Replacement Reaction’s = SRR
Double Replacement Reactions = DRR
Combustion Reactions = CR
#1 SR
#2 SR
#3 SR
#4 SRR
#5 DRR
#6 SR
#7 DR
#8 DR
#9 sorry not sure
#10 DR
#15 SR
Related Questions
If the spring constant is 30N/m and a spring is stretched by 0.3m, how much force has been applied?
Answers
Answer:
Question:
A spring with a spring constant of 30 N/m is stretched 0.2 m from its equilibrium position. How much work must be done to stretch it an additional 0.1 m?
Elastic Potential Energy:
The work that needs to be done by any object is a form of energy. The work can be defined in terms of the work-energy theorem, which states that the work can either be the difference in the kinetic energy of a system or the difference in the potential energy of a system. There is a special type of potential energy reserved exclusively for
What is an algal bloom?
A. a growth of new algae
B. a type of floating algae
C. an overgrowth of algae
D.a type of flowering algae
Answers
Answer:
C im pretty sure. hope this helps
Which does NOT affect the speed of an object that is pushed
Answers
Answer:
balanced forces do not affect the motion of the object. Unbalanced forces affect the motion and velocity of an object.
How many atoms are in 4.72 moles or Ar?
Answers
Answer:
Argon is a chemical element with the symbol Ar and atomic number 18.
Explanation:
Answer:
Avogadro's number is a very important relationshiptoremember: 1 mole = 6.022×1023 6.022 × 1023atoms, molecules, protons, etc.
...
Explanation:
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The pH of a solution is 8.7
What is the pOH?
Answers
Answer:
pOH = -log[OH – ]
pH + pOH = 14
Explanation:
I did not understand the question but hope this help!
The pH of a solution is 8.7 and pOH is 5.3
What is sum of pH and pOH?The sum of pH and pOH is 14.
pH + pOH = 14
If pH of a solution is 8.7 then pOH is calculated as,
8.7 + pOH = 14
pOH = 14 - 8.7
pOH = 5.3
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Need help plz!
-Which property describes a mixture?-
A. It cannot be separated by physical methods.
B. It has a single chemical composition.
C. It cannot have more than one state of matter.
D. It cannot be described by a chemical symbol or formula.
Answers
Answer:
D as a mixture is not a compound and it does not have it's own chemical formula
Explanation: Sauce me brainliest
It cannot be described by a chemical symbol or formula.
- Chilio
Please help me :D I’m begging rn lol
Answers
Answer:
To catch a ball, the fielder has to stop the ball. This means, force is applied against the motion of the ball. So, between the fielder applies force on the ball and the ball comes to rest, the ball moves in the direction opposite to the direction of force. Thus work is negative.
Explanation:
MARK ME AS BRAINLIEST PLSSS
When a firecracker explodes, stored chemical energy turns into sound and light energy. What other type of energy is also released during this transformation?
Answers
what is metaphase
HELEPWOAUSJSKQJDHEHR
Answers
Answer:
the second stage of cell division. its between prophase and anaphase during the chromosomes become attached to spindle fibers.
I am an element in period 4 with 7 valence electrons.
Answers
Answer:
The elements in this family are fluorine, chlorine, bromine, iodine, and astatine. Halogens have 7 valence electrons, which explains why they are the most active non-metals.
Explanation:
Answer:
Selenium
Explanation:
7. What is a meteorite? It is a
A. dim meteor
B. bright meteor
C. meteoroid that lights up
D. remains of meteoroids that hit the Earth
8. What is a comet? It is a/an
A. rock from Mars
B. class of smaller inner solar system bodies that orbit around the sun
C. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail
when it travels close to the sun
D. natural object from small to huge that originates in space and survives the
impact on the earth's surface
9. What composes silicate?
A. silicon, oxygen, and at least one metal
B. silicon, carbon, and at least one metal
C. silicon, methane and a rock
D. iron, nickel, and argon
10. Why do scientists study comets?
A. They are valuable minerals.
B. They could provide Earth with rocks.
C. They can help make the Earth a habitable planet.
D. They provide information how the Earth obtained liquid water.
11. Why would global temperature of the Earth drop when struck by a massive
asteroid?
A. The resulting cloud would block out sunlight.
B. The low temperature of asteroid would chill the oceans.
C. The impact would move the Earth farther from the Sun.
D. The ice in the asteroid would increase the Earth's reflective power.
12.When objects strike a surface of a planet, they leave a deep impression on the
surface called
A. canyon
B. crater
C. plateau
D. pothole
13. Meteoroids are formed when asteroids collided and crushed into pieces. Based
on this statement, where did the meteoroids originate?
A. Asteroid Belt
B. Mars
C. Moon
D. Sun
Answers
7. Remains of meteroids that hit down the earth.
8. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.
9. silicon, oxygen and at least one metal.
10. They provide information how the Earth obtained liquid water.
11. The resulting cloud would block out sunlight.
12. crater
13. Asteroid Belt
7. A meteorite is remains of meteoroids that hit down the earth.
8. A comet is an icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.
What are meteoroids ?The term meteoroids is defined as the small rock pieces that revolve around the Sun.They typically consist of gases, ice particles, and dust.
9. The composes silicate are silicon, oxygen and at least one metal.
10.The scientists study comets because they provide information how the Earth obtained liquid water.
11. The global temperature of the Earth drop when struck by a massive
asteroid because the resulting cloud would block out sunlight.
12. When objects strike a surface of a planet, they leave a deep impression on the surface called crater.
13. Meteoroids are formed when asteroids collided and crushed into pieces. Based on this statement, the meteoroids originate in Asteroid Belt.
Thus, A meteorite is remains of meteoroids that hit down the earth.
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If 23.17 g of beryllium (Be) reacts with water at standard temperature and pressure,
how many liters of hydrogen (H2) are produced?
Answers
Volume of H2 produced = 57.6576 L
Further explanationGiven
23.17 g Be
Required
Volume of H2
Solution
Reaction
Be(s)+H2O(g)→BeO(s)+H2(g)
mol Be :
= 23.17 g : 9 g/mol
= 2.574
From the equation, mol H2 : mol Be = 1 : 1, so mol H2 = 2.574
Volume H2(assumed at STP, 1 mol=22.4 L) :
= 2.574 x 22.4 L
= 57.6576 L
1pt Which of the following is NOT true about the role tectonic forces play in the rock cycle?
O A. When plates pull apart, rocks melt, and magma forms igneous rocks.
O B. When plates crash together, rocks are buried and form metamorphic rocks.
O c. When plates slide over and under each other, the heat and pressure form igneous rocks.
OD. When rocks push upward and form mountains, the erosion of the mountains can produce sediment.
Answers
Tectonic forces do not cause plates to slide over and under each other, to produce heat and pressure which forms igneous rocks
What is the rock cycle?The rock cycle is a cycle which describes how the three basic rock types are related and how earth processes convert one rock type into another over geologic time.
Plate tectonic forces together with weathering and erosional processes, are responsible for the rock cycle.
Tectonic forces play the following roles in rock cycle:
When plates pull apart, rocks melt, and magma forms igneous rocks.When plates crash together, rocks are buried and form metamorphic rocksWhen rocks push upward and form mountains, the erosion of the mountains can produce sedimentTherefore, the statement that when plates slide over and under each other, the heat and pressure form igneous rocks is not True.
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OMG PLEASE HELP IM DOING SO WELL IN SCIENCE AND THIS IS GRADED AND MY PROFEESER WONT HELP
Answers
Answer:
bbbbbbbbbbbbbbbbbbb
Explanation:
Plz help me on this
A student has a 6 gram sample of sodium chloride (NaCl) solid. How many moles of sodium chloride are contained in this sample?
Answers
The number of moles of NaCl = 0.103
Further explanationGiven
6 gram sample of NaCl
Required
moles
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
mole = mass : molar mass
Molar mass of NaCl = 58.5 g/mol
Input the value :
mole = 6 g : 58.5 g/mol
mole = 0.103
Please help me ASAP
Answers
Can someone please help me quickly!!!
Answers
Answer:
Mercury
Explanation: Under standard conditions mercury is a shiny, heavy, silvery liquid. It is the only metal that is liquid at room temperature.
Answer:
Mercury, Venus, earth and mar, Jupiter, Saturn, urines, Neptune.
Explanation:
Please answer this question please brianlest
Answers
If the spring constant is 12.6N/m and a spring is stretched by 0.25m, how much force has been applied?
Answers
Answer:
The magnitude of the applied force is 3.15 N
Explanation:
Hooke's law states that for small deformations, the change in dimensions, 'x', of an object is directly proportional to the force, 'F', of the acting load acting that bring about the deformation
Mathematically, Hooke's Law can be expressed as follows;
F = k·x
Where;
F = The applied load
k = The force constant of the object
x = The amount of deformation of the object
The given parameters are;
The spring's force constant, k = 12.6 N/m
The amount of stretching in the spring, x = 0.25 m
Therefore, we have;
The force applied, F = k·x = 12.6 N/m × 0.25 m = 3.15 N.
If you took a wire, connected one end to a rechargeable battery, and connected the other end to the leaf of a plant, would you be able to extract electricity from the plant ?
Answers
Answer:
No bcz it is insulator it will not conduct electric
Calculate the vapor pressure (in torr) of a 35°C solution of ethanol and propanol where the mole fraction of propanol is .75. Assume Ideal behavior P°ethanol35=100torr P°propanol35=36torr
Answers
The vapor pressure (in torr) of a 35°C solution : 52 torr
Further explanationGiven
x propanol = 0.75
P°ethanol=100 torr
P°propanol=36 torr
Required
the vapor pressure
Solution
Raoult's Law
P solution = xA.P°A +xB.P°B
x ethanol = 1- 0.75 = 0.25
Input the value :
P solution = 0.25 x 100 + 0.75 x 36
P solution = 25 + 27
P solution = 52 torr
1.Let's say you could see inside of the nucleus of a Silver atom and inside the nucleus of a Cobalt atom. How would they look different?
2.If a substance has no (or almost no) likelihood of undergoing a chemical reaction with another element it is said to be:
a.Ionized
b.Malleable
c.Reactive
d.Inert
e.An Isotope
3. Evaluate this sentence and explain why it is incorrect:
“Neon came into contact with Iron and the reaction was very explosive.”
4. Mr. Carney does and experiment. He weighs himself. He weighs 210 lbs. He then runs 15 miles. Then weighs himself. He now weighs 200 lbs.
Explain the conservation of mass using this experiment as your example.
NEED ANSWERS NOW DUE TODAY
Answers
1. A silver atom would have 47 protons and more neutrons than a cobalt atom and a cobalt atom would only have 27 protons and less neutrons than a silver atom.
2. D. Inert Inert means non-reactive.
3. Neon gas is a Nobel gas on the right side of the periodic table so it is an inert gas and does not react with iron.
4. Mass is neither created or destroyed so as Mr. Carney ran carbon in his body left as carbon dioxide. So the 10 lbs he lost left his body as CO2 through the lungs.
mole-mass problem:
Water decomposes to produce hydrogen gas and oxygen gas. How many moles of oxygen would be produced from 10.0 moles
water? 2 H2O → 2 H2 + O2
Answers
Answer:
5.00 mol O₂
Explanation:
2H₂O → 2H₂ + O₂In order to solve this problem we will need to convert moles of water to moles of oxygen. We will do that using the stoichiometric coefficients, as follows:
10.0 mol H₂O * [tex]\frac{1molO_2}{2molH_2O}[/tex] = 5.00 mol O₂Thus 5.00 moles of oxygen would be produced from 10.0 moles of water.
find the valency and valence electron in phosphorus.
Answers
Phosphorus has 3 as a valency.
Hope this is correct.
(12.5 x 10⁸⁴) / (9.58 x 10⁵⁵)
Answers
Answer: Its 1.30480167.1029
Explanation:
Why is nuclear energy considered a nonrenewable resource?
Nuclear radiation does not run out.
It comes from radiation from the sun.
Uranium ore is replaced on a geologic timescale.
Uranium replenishes more quickly than it is being used.
Answers
Answer:
You could classify nuclear energy as nonrenewable because uranium and similar fuel sources are finite. On the other hand, some people consider nuclear energy renewable because the element thorium and other new technologies may provide infinite fuel needed to power nuclear reactors.
How many grams of CO2 can be produced from 150 grams of O2?
C3H8 + 5 02
->
3 CO2 + 4H2O
Answers
120 g CO₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[RxN - Balanced] C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
[Given] 150 g O₂
Step 2: Identify Conversions
[RxN] 5 mol O₂ → 3 mol CO₂
[PT] Molar Mass of O - 16.00 g/mol
[PT] Molar Mass of C - 12.01 g/mol
Molar Mass of O₂ - 2(16.00) = 32.00 g/mol
Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol
Step 3: Stoich
[DA] Set up: [tex]\displaystyle 150 \ g \ O_2(\frac{1 \ mol \ O_2}{32.00 \ g \ O_2})(\frac{3 \ mol \ CO_2}{5 \ mol \ O_2})(\frac{44.01 \ g \ CO_2}{1 \ mol \ CO_2})[/tex][DA] Multiply/Divide [Cancel out units]: [tex]\displaystyle 123.778 \ g \ CO_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
123.778 g CO₂ ≈ 120 g CO₂
The pressure and temperature of N² and gas drops from 303kPa at 300K to 202²kPa at -73°C. If the initial volume is 2L, find the new volume.
Answers
Answer:
Gjvb
Explanation:
Using the combined gas law equation as follows:
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (kPa)
P2 = final pressure (kPa)
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
According to this question;
T1 = 300K
T2 = -73 + 273 = 200K
P1 = 303kPa
P2 = 202kPa
V1 = 2L
V2 = ?
Using the above formula:
303 × 2/300 = 202 × V2/200
606/300 = 202V2/200
Cross multiply;
606 × 200 = 300 × 202V2
121200 = 60600V2
V2 = 121200/60600
V2 = 2L
The new volume is 2L
If two kids kick the ball at the same time what is the motion on the ball will do?
Answers
Explanation:
I think your correct it's A!!
Convert 12.04 x 1023 atoms of helium to moles
Answers
Moles of Helium = 2
Further explanationGiven
12.04 x 10²³ atoms of helium
Required
moles
Solution
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
moles Helium :
n = N : No
n = 12.04 x 10²³ : 6.02 x 10²³
n = 2
