Answer:
work = 3.45 Joules
Explanation:
Work from the 1st Law of Thermodynamics is PΔV in the equation of internal energy => ΔE = ΔH + PΔV.
Therefore, work = PΔV = 2.07atm·(2.334L - 0.666L) = 3.45 L·atm = 3.45 Joules
What are the purpose of a chemical equation check all that apply
Answer: (A,B,D) [1, 2, 4]
Explanation:
A compound is found to contain 29.67 % sulfur and 70.31 0/0 fluorine by mass. To answer the question , enter the elements in the order presented above. QUESTION 2: The molar mass for this compound is 10.81 g/mol The molecular formula for this compound is
pls help will give brainilest or however you spell it
Answer:
1. balanced
2. balanced
3. unbalanced
4. balanced
5. balanced
6. unbalanced
7. balanced
8. unbalanced
Explanation:
Does CO2+H2O----> C6H12O6+O2 demonstrate the Law of Conservation of Mass?
Answer:
Explanation:
-Reactants-
C: 1
O: 3
H : 2
-Products-
C: 6
O: 8
H: 12
Since these two are not equal, this reaction is not balanced.
Here is the balanced reaction:
6CO2+6H2O ⇒ C6H12O6+6O2
___Li + ___AlPO4 --> ___Al + ___Li3PO4
If 2.3 moles of Aluminum Phosphate are reacted, how many grams of Lithium Phosphate are produced?
Answer:
266.3 g
Explanation:
__Li + __AlPO₄ → __Al + __Li₃PO₄The balanced reaction is:
3Li + AlPO₄ → Al + Li₃PO₄First we convert 2.3 moles of AlPO₄ to moles of Li₃PO₄, using the stoichiometric coefficients:
2.3 mol AlPO₄ * [tex]\frac{1molLi_3PO_4}{1molAlPO_4}[/tex] = 2.3 mol Li₃PO₄Then we convert Li₃PO₄ moles into grams, using its molar mass:
2.3 mol Li₃PO₄ * 115.79 g/mol = 266.3 gwater is a ____ molecule meaning the positive hydrogen end attracts the negative oxygen ends of another
A. balance
B.universal
C. wet
D.polar
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Water is a polar molecule where, the positive hydrogen end attracts the negative oxygen ends of another water molecule. Thus, option D is correct.
What is polarity ?Polarity is ability of charge separation in a molecule. In some molecules, the positive and negative ends exists separately and both ends remains reactive towards the counter charged end of other molecule.
The charge separation in molecules results in a dipole moment. Permanent dipole moment make the molecule polar. Water is a polar molecule.
The shared pair of electrons in water are more attracted towards the electronegative oxygen atom leads the charge separation. This polarity helps to the formation of strong intermolecular hydrogen bonding.
Find more on polar compounds:
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What does (endangered wildlife) mean ?
Answer:
Hey mate....
Explanation:
This is ur answer.....
A species considered to be facing a very high risk of extinction in the wild.
Hope it helps you,
Mark me as the brainliest...
FOLLOW ME! :)
Answer:
It means when a species in the wildlife is in danger or close to being completely extinct.
Which angle allows the soil to receive the most direct ligh
0 degrees
20 degrees
45 degrees
90 degrees
Answer: 90 degrees .
The unusually fast rate at which many glaciers globally are melting is due to
he lies of scientists
too many tree-huggers breathing
human induced Global Warming
political opinion
Answer: human induced global warming
Explanation:
It’s the only one that makes sense if you read the question
Which line (A or B) represents a faster
speed?
Answer:
A
Explanation:
Because in 1 second, line A was faster than line B.
How many moles are in a 12.0 g sample of NiC12
Answer:
0.17 moles
Explanation:
In the elements of the periodic table, the atomic mass = molar mass. Ex: Atomic mass of Carbon is 12.01 amu which means molar mass of Carbon is also 12.01g/mol.
In order to find the # of moles in a 12 g sample of NiC-12, we will need to multiply the number of each atom by its molar mass and then add the masses of both Nickel and C-12 found in the periodic table:
Molar Mass of Ni (Nickel): 58.69 g/molMolar Mass of C (Carbon): 12.01 g/molSince there's just one atom of both Carbon and Nickel, we just add up the masses to find the molar mass of the whole compound of NiC-12.
58.69 g/mol of Nickel + 12.01 g/mol of Carbon = 70.7 g/mol of NiC-12There's 12g of NiC-12, which is less than the molar mass of NiC-12, so the number of moles should be less than 1. In order to find the # of moles in NiC-12, we need to do some dimensional analysis:
12g NiC-12 (1 mol of NiC-12/70.7g NiC-12) = 0.17 mol of NiC-12The grams cancel, leaving us with moles of NiC-12, so the answer is 0.17 moles of NiC-12 in a 12 g sample.P.S. C-12 or C12 just means that the Carbon atom has an atomic mass of 12amu and a molar mass of 12g/mol, or just regular carbon.
This table lists plant adaptations and their functions.
Adaptation Function
flower aids in reproduction
bark ?
cuticle stops water loss
thorns stops predators
Which phrase correctly completes the chart?
A. stores seeds
B. provides protection
C. attracts pollinators
D. carries water
What is an example of a neutral mutation? a frog born with white skin a person's inability to break down sugar a red flower with one part colored yellow
Answer:
I think a red flower with one part colored yellow
Explanation:
a red flower with one part colored yellow
All substances freeze at the same temperature, so they all have exactly the
same freezing point.
O True
O False
Answer:
I think it would be false
Explanation:
All things have a unique freezing/melting point
1. The decomposition of CaCO3 proceeds according to the following equation.
A. If 5 moles of CaCO3 decompose completely, how many moles of CaO are created?
B. If 1 mole of CaCO3 decomposes completely, how many grams of CO2 are created?
C. If 30 grams of CaCO3 decomposes completely, how many grams of CO2 are created?
2. A chemical reaction proceeds according to the following equation.
SiO2 + 4 HF → SiF4 + 2 H2O
A. If 5 moles of SiO2 are used in this reaction, how many moles of H2O are created?
B. If 34.2 moles of HF are used in this reaction, how many grams of H2O are created?
C. If 9.4 grams of SiF4 are created in this reaction, how many grams of SiO2 were used?
Which of the following best describe the parts of the volcano?
a .mountain or hill
B. are openings in the earth surface
c. are found only on land D. composed of caldera, vent and crater
Answer:
B. are openings in the earth surface
A coin is 3.00% Cu by mass. If the mass of the coin is 4.0561g, how many moles of Cu does it contain
Answer:
4.0561×0.03÷63.5= 0.001916 mol cu
A coin is 3.00% Cu by mass. If the mass of the coin is 4.0561g, moles of Cu does it contain 0.001916 mole of Cu.
What is mass ?It is the most fundamental characteristic of matter and one of the fundamental quantities in physics.
Mass is a term used to describe how much matter is there in a body. The kilogramme is the SI unit of mass (kg). A body's mass does not alter at any point in time.
Given mass of coin = 4.0561g , moles =? , Cu by mass= 3.00%
4.0561×0.03÷63.5= 0.001916 mole Cu.
Thus, A coin is 3.00% Cu by mass. If the mass of the coin is 4.0561g, moles of Cu does it contain 0.001916 mole of Cu.
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What are 2 substances that DO NOT REACT?
Water and oil? Cake and your finger? Glass and virtually anything? ...
Tonnes and tonnes of noninterreactant substances.
Hope this helps.
if the pressure, volume, and tempature of a gas are known which can most likely be found by using the ideal gas law
• the molar amount of the gas
•the partial pressure of the gas
•the stand temperature
•the molar mass
Answer:
• The molar amount of the gas
Explanation:
Hello!
In this case, according to the ideal gas law:
[tex]PV=nRT[/tex]
Whereas P stands for pressure, V for volume, n for the molar amount of the gas, R for the universal gas constant and T for the temperature, we can see that as pressure, volume and temperature are given, we can compute the molar amount of the gas as shown below:
[tex]n=\frac{PV}{RT}[/tex]
Since R is a constant always.
Best regards!
PLEASE HELP IMMEDIATELY I NEED THE ANSWER NOT A HINT THANK YOU
Cytoplasm: gel like environment which allows organelles to move about the cell
Golgi bodies: packages and ships materials out of the cell
Cell membrane: controls what goes in and out of the cell
Chloroplast: makes food for plant cells using sunlight
Lysosome: breaks down waste, food, and worn out cell parts
Mitochondria: breaks down food to release energy for the cell
Nucleus: contains the cell's DNA and is the control center of the cell
Endoplasmic reticulum: transports materials within cell; process lipids
Vacuole: stores water, waste and food
Ribosome: make proteins
what are the particles of copper at rtp
Answer:
i think the answer is... A
Part 1: Fill in the blank
Newton’s Second Law: Unbalanced forces cause an object to ______.
Answer:
and can cause changes in motion. Inertia.
Explanation:
Answer: change its motion.
Explanation: hope this helps :)
Drag each sequence to the correct location in the table.
Sort the sequences based on the type of mutation they display.
TATTA - TATTAGA
TATTCG TATTAAT
TATTAT TATTACG
ACGTATTC - ACGTTTC
ATTA GTAC - ATGT ACTA
GATCCAT - GATCCATCA
TACTTAGT TACTTGT
Deletion
Translocation
Insertion
Answer:
Does the picture go with the question?
Explanation:
A compound is found to contain 29.67 % sulfur and 70.31 % fluorine by mass.
To answer the question, enter the elements in the order presented above.
QUESTION 1:
The empirical formula for this compound is
How many grams are in 4.56 moles of Mg(OH)2
Group of answer choices
a 266 g
b 0.00518 g
c 193 g
d 0.0782 g
How many electrons can beryllium lend
Answer:
2 because it has two outer shell electrons out of 8 (relevant rule only for the first 20 elements)
PLEASE HELP!! IM BEING TIMED
It takes 1 frame, 1 seat, 2 pedals, and 3 wheels to make 1 tricycle. If I start with 200 frames, 200 seats, 200 pedals and 240 wheels, how many tricycles can you make? What did you run out of? What is the limiting reactant?
Answer:
80 tricycle
Explanation:
Because u need 3 wheels to for each tricycle so Ll u have to do is just divide 3 with 240 u will get 80
define saturated and unsaturated fats
Answer:
SATURATED: Saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds.
UNSATURATED: Unsaturated fats are loosely packed. They tend to be liquid at room temperature.
There are two main types of unsaturated fat:
Monounsaturated
Polyunsaturated
What usually happens to the solubility of gas as temperatures decreases?
Answer:
the solubility of the gas increases
Explanation:
as the kinetic energy of a gaseous solute increases,its molecules has a greater chance of escaping the attraction of the solvent molecules and return to the gas phase..which lead to the solubility of the gas been Increase as the temperature decreased .
A tank of gas is found to exert 8.6 atm at 38°C. What would be the required
temperature to change the pressure to standard pressure?
Answer:
36.2 K
Explanation:
Step 1: Given data
Initial pressure of the gas (P₁): 8.6 atmInitial temperature of the gas (T₁): 38°CFinal pressure of the gas (P₂): 1.0 atm (standard pressure)Final temperature of the gas (T₂): ?Step 2: Convert T₁ to Kelvin
We will use the following expression.
K = °C +273.15
K = 38 °C +273.15 = 311 K
Step 3: Calculate T₂
We will use Gay Lussac's law.
P₁/T₁ = P₂/T₂
T₂ = P₂ × T₁/P₁
T₂ = 1.0 atm × 311 K/8.6 atm = 36.2 K