Answer:
35750.4 Joules
Explanation:
Using the formula as follows;
Q = m × c × ∆T
Where;
Q = amount of heat (joules)
m = mass of substance (g)
c = specific heat capacity (J/g°C)
∆T = change in temperature (°C)
According to the provided information,
mass (m) = 320.0 grams
c = 4.2 J/g°C
∆T = (50.8°C - 24.2°C) = 26.6°C
Q = ?
Using; Q = m × c × ∆T
Q = 320 × 4.2 × 26.6
Q = 35750.4 J
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the outermost "layer..............
Answer:
Thin
Explanation:
Dry, hard rock from deep within the earth reacts with water and oxygen on the surface and creates new kinds of minerals
please help me :)
( check the photo! )
Answer:
plastic rays i think the matetial that can widely recycle
Two reactant particles collide with proper orientation. The collision will be effective if the particles have
(A) sufficient potential energy
(B) high activation energy
(C) high ionization energy
(D) sufficient kinetic energy
And explain why, and answer in brainly
The collision will be effective if the particles have sufficient kinetic energy (Option D).
Kinetic energy is motion energy, conversely to potential energy.Kinetic energy is required to produce the collision between particles.The more kinetic energy the particles have, then the more collision will occur, thereby it increases the rate of a chemical reaction.In conclusion, the collision will be effective if the particles have sufficient kinetic energy (Option D).
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A 1.83 mol sample of carbon reacts with excess zinc oxide to produce zinc and carbon dioxide. How many moles of zinc oxide are consumed?
Answer:
3.66 moles of Zinc Oxide are consumed
Explanation:
Based on the reaction:
C + 2ZnO → 2Zn + CO₂
Where 1 mole of Carbon reacts with 2 moles of Zin Oxide to produce 2 moles of Zinc and 1 mole of Carbon Dioxide.
To solve this question, we must convert the moles of carbon added to the moles of Zinc Oxide that react using the chemical equation (1mol C = 2mol ZnO):
1.83 moles C * (2mol ZnO / 1mol C) =
3.66 moles of Zinc Oxide are consumedThe ocean pressure at the depth of the Titanic wreck is 400 atm . Calculate the ocean pressure in kpa?
A)3.00 × 10^4 kPa
B)4.05 × 10^4 kPa
C)4.05 × 10^3 kPa
D)4.05 × 10^2 kPa
Answer:
4.05 × 10⁴ kPaExplanation:
To find the pressure in kPa we use the conversion
1 atm = 101.3 kPaIf 1 atm = 101.3 kPa
400 atm = 400 × 101.3 = 40520 kPa
Expressing it in standard form we have the final answer as
4.05 × 10⁴ kPaHope this helps you
Answer: 3.04 x 10 mm Hg
Explanation:
The water released by the reaction (mass = 0.00020 g) was calculated as was the
heat energy released (-9.6 x 10 kJ). Given the information you have about the 5
accelerants, see if you can determine which liquid is the accelerant under the
threshold.
1. Acetone:
C3H60+
02-
CO2 +
H20 ΔΗ =
2. Coleman Fuel:
C5H12 +
02-
CO2 +
H20 ΔΗ =
3. Ethyl alcohol
C2H60 +
02 -
CO2 +
H20 ΔΗ =
4. Mineral Spirits:
C10H22 +
02-
CO2 +
H20 AH =
5. Turpentine:
C10H16 +
02 -
CO2 +
H20 ΔΗ =
The accelerant used was
I
which is commonly found in:
What is happening when an oxygen molecule is formed from two separate oxygen atoms?
Clasifica cada uno de los siguientes incisos como sustancia pura (elemento y compuesto) o mezcla (homogénea y heterogénea). Explica brevemente. (a) arroz con leche (b) agua de mar (c) magnesio (d) gasolina
Answer:
Ver explicacion
Explanation:
Un arroz con leche es una mezcla heterogénea porque está compuesto por partículas sólidas de diferentes tipos y tamaños.
El agua de mar es una mezcla homogénea de sustancias todas en la misma fase.
El magnesio es una sustancia pura y es un elemento.
La gasolina es una mezcla homogénea de sustancias comúnmente utilizadas como combustible.
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Answer:
d. Solid
Explanation:
It is frozen to be a glacier
Hope this helps :)
What is missing from the solubility graph shown on the right? A graph with temperature in degrees Celsius ranging from 0 to 100 in units of 20 on the horizontal axis and unidentified tick marks from 0 to 300 in increments of 50 on the vertical axis. An orange line curves upward from 0, 90 through 50, 125 to 100, 245.
Answer:
graph title, label for the y axis, and legend explaining the orange and blue colors
Explanation:
Fusion:
Requires high temperatures
Occurs in the sun and other stars
Creates less radioactive waste than fission
All of the above
How do you name branched-chain alkanes?
Answer:
Explanation:
Branches or side chains are called alkyl radicals, they are named substituting the termination -ano for -yl or -il when it is part of a hydrocarbon.
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Answer:The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound.
Explanation:
Which of the following has the highest concentration?
A 1.2 M phosphoric acid
B 0.9 M phosphoric acid
C 3 M phosphoric acid
D 0.17 M phosphoric acid
A catalyst increases the rate of a chemical reaction by
Lowering the heat of reaction
Increasing the activation energy
Lowering the activation energy
Changing the position of equilibrium
Answer:
Lowering the activation energy
Explanation:
A catalyst does not participate in the reaction, instead it offers the reaction an alternative pathway by lowering the activation energy. This new pathway is faster and the rate of reaction is increased.
1. Write the chemical symbol for each of the following elements.
Aluminum
Beryllium
Calcium
Flourine
Neon
Nitrogen
Silicon
Silfur
2. Write the name of the element for each of the following symbols.
Ar
B
Li
Na
Fe
3. What is the atomic number for the following elements?
C
Fe
Pb
O
N
Zn
Answer:
Chemical symbol:
Aluminum:Al
Berylium: Be
Calcium: Ca
Flourine: F
Neon: Ne
Nitrogen: N
Silicon: Si
Silfur: S
Element name
Ar: Argon
B: Boron
Li: Lithium
Na: Sodium
Fe: Iron
Atomic number
C:6
Fe: 26
Pb: 82
O: 8
N: 7
Zn: 30
Answer:
aluminum- Al
beryllium- Be
calcium- Ca
flourine- F
neon- Ne
nitrogen- N
silicon- Si
sulfur- S
_____________________________________________________
Ar- argon
B- boron
Li- lithium
Na- sodium
Fe- iron
______________________________________________________
C- 6
Fe- 26
Pb- 82
O- 8
N- 7
Zn- 30
Explanation:
What is the pow of a solution that has a hydroxide ion concentration of 4.82 x 10-6 M?
Answer:
pOH = 5.32
Explanation:
What is the pOH...
The pOH of a solution is defined as:
-log [OH⁻] The -log of hydroxide ion concentration in molarity units
It is used to find pH of a solution because: pH = 14-pOH
Thus, the pOH of the solution of the problem is:
pOH = -log [OH⁻] = -log [4.82x10⁻⁶M]
pOH = 5.32
What does the speaker in the poem mean by the phrase "my heart leaps up"?
A.
He is having a heart attack.
B.
He is exercising.
C.
He feels excited and happy.
D.
His heart continues to beat.
Answer:
C. He feels excited and happy
Explanation:
HURRY WILL GIVE BRAINLIETS How are proteins and nucleic acids related? They both provide energy. They both carry genetic information. The structure of proteins is determined by nucleic acids. The subunits of nucleic acids are also the subunits of proteins.
Answer: the answer is “C”
Explanation:
Took the T E S T
How many atoms does NH4Br have
Answer:
6
Explanation:
bromine has 1, hydrogen has 4 and nitrogen has 1 therefore equaling 6
The number of atoms in NH₄Br is six.
What is an atom?An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.
Atoms are the basic building blocks of matter. Anything that takes up space and anything with mass is made up of atoms.
In the given formula, there is one N atom, four H atoms and one Br atom making a total of six atoms.
Therefore, the number of atoms in NH₄Br is six.
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10. Air is a homogenous mixture of gases. Oxygen is 20% by volume of air typically. What
amount of moles of oxygen is present in 20 L of air at STP?
Answer:
893 moles
Explanation:
An ideal gas at STP occupies 22.4 liters. Calculating Oxygen as if it were an ideal gas there are . 893 moles of Oxygen in 20.0 liters.
how do you rewrite 4 5/7 as an improper fraction. in steps
please don't use files they don't work
Answer:
33/7
Multiply the denominator of the fraction by the whole number.
Add this result to the numerator of the fraction
answer becomes the numerator of the improper fraction.
Explanation:
Answer:
33/7
Explanation:
1. take the fraction and multiply the denominator by 4 to get 28
2. add the numerator to that... 28+5=32
This diagrams represents...
a
a pure substance containing diatomic molecules
b
a pure substance containing compounds
c
a mixture containing compounds
d
a mixture of atoms
Which of the following statements correctly describes what happens in all chemical reactions?
Answer:
Bonds between atoms are broken/ or new bonds are formed
Explanation:
Due to chemical changes.
According to kinetic molecular theory, collisions between gas particles in a sample of an ideal gas 1. increase the energy content of the gas sample 2. produce strong attractive forces between the gas particles 3. result in a net loss of energy by the gas sample 4. transfer energy between the gas particles
Answer:
should you prove this or explain or pick the correct answer
According to the kinetic molecular theory, collisions between gas particles in a sample of an ideal gas: Transfer energy between the gas particles. Hence, option 4 is correct.
What is kinetic theory of gases ?According to kinetic theory of gases, when gas particles collide with each other, they transfer energy between themselves. Some collisions will result in the transfer of kinetic energy from one particle to another, while others may result in a transfer of potential energy due to the intermolecular forces between the particles.
However, the total energy of the gas particles is conserved during these collisions, so there is no net loss or gain of energy by the gas sample as a whole.
The kinetic molecular theory also states that ideal gas particles do not have any significant attractive or repulsive forces between them, so option 2 is incorrect.
Additionally, collisions between gas particles do not increase the energy content of the gas sample (option 1) or result in a net loss of energy by the gas sample (option 3).
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Select whether the statement is for Speed, Velocity, or Acceleration.
The car speeds up from 5 mph to 10 mph.
Speed
Acceleration
Velocity
Answer:
Explanation:
acceleration no cap
which of the following would remain a liquid longest as the temperature continues to drop? propane, octane, hexane, ethane
Which do you think has the greater total kinetic energy?
a. The molecules of the water in the teacup
b. The molecules of the water in the bathtub
Answer:
a The molecules of the water in the teacup
hope it helps
Someone help me out with this brain pop ⚠️
The answer is d but can anyone explain why and if not don't answer
Answer:
because the reaction can always be accelerated by heat
