10. Benzene deactivating group is:
a. -OH
b. --CH3
c. -C2Hs
d.-CI
Answer:
CH3
Explanation:
A reaction that releases energy in the form of heat is called a/n
Answer:
Exothermic reaction!
Explanation:
Exo -> Releases Heat
Endo -> Absorbs Heat
which of the following is not found in the tropical rainforest?
a.ilang - ilang b. wild pigs c.ferns d. shark
Answer:
B. Wild Pigs!!!!!!!!
What is the difference between a renewable and non-renewable source of energy? Give 3 examples of each.
Answer:
There are two major categories of energy: renewable and non-renewable.
Non-renewable energy resources are available in limited supplies, usually because they take a long time to replenish. The advantage of these non-renewable resources is that power plants that use them are able to produce more power on demand. The non-renewable energy resources are:
CoalNuclearOilNatural gasRenewable resources, on the other hand, replenish themselves. The five major renewable energy resources are:
SolarWindWater, also called hydroBiomass, or organic material from plants and animalsGeothermal, which is naturally occurring heat from the earthWhile renewable energy resources have the advantage of unlimited supply over the long haul, they are limited in their availability at any given moment.
For example, the sun rises each day, but its ability to generate power is limited when its cloudy. Another disadvantage is that power plant operators can’t crank up renewable energy production when people are consuming more power, such as on a hot day when many people are running air conditioners at the same time.
Kito puts his spoon into a helping of fresh, hot, mashed potatoes as shown in the figure. Which process takes place when the two objects come together
A. The temperature of the spoon increases, but its thermal energy does not change
B. Energy in the form of heat is transferred from the warmer mashed potatoes to the cooler spoon
C. The thermal energy of both the mashed potatoes and the spoon increases as energy in the form of heat is transferred between them
(please answer quickly, I don't want to fail this test due to being stuck on this one)
Answer:
B. is the answer
Explanation:
Energy in form of heat is transferred from the warmer mashed potatoes to the cooler spoon.
WILL AWARD BRAINLIEST!!! A chemist performs a reaction combining 100.1 g of aluminum chloride (AlCl3), and 57.2 g of sodium hydroxide (NaOH). The products are aluminum hydroxide (Al(OH)3) and sodium chloride (NaCl).
a. Please write out the balanced equation for this reaction.
b. Assuming all the aluminum chloride is consumed in this reaction, how many grams of aluminum hydroxide will form? Work must be shown to earn credit.
c. If all the sodium hydroxide is used up, how many grams of aluminum hydroxide can be formed? Work must be shown to earn credit.
d. What is the theoretical yield of this reaction? Which reagent is limiting? Explain your answer.
a.The balanced reaction between [tex]AlCl_3[/tex] and NaOH is:
[tex]AlCl_3 + 3NaOH[/tex] → [tex]Al(OH)_3 + 3NaCl[/tex] is the balanced reaction.
b.58.55g of aluminum hydroxide will form? Work must be shown to earn credit
c. 6.50 g grams of aluminum hydroxide can be formed.
d.[tex]Al(OH)_3[/tex] produced from NaOH is less, NaOH will be the limiting reagent. The amount of [tex]Al(OH)_3[/tex] actually produced is 4.13 g.
What is a balanced chemical equation?An equation that has an equal number of atoms of each element on both sides of the equation is called a balanced chemical equation.
a.The balanced reaction between [tex]AlCl_3[/tex] and NaOH is:
[tex]AlCl_3 + 3NaOH[/tex] → [tex]Al(OH)_3 + 3NaCl[/tex] is the balanced reaction.
b) Given mass of [tex]AlCl_3[/tex] = 100.1 g
Molar mass of [tex]AlCl_3[/tex] = 133.34 g/mol
moles of [tex]AlCl_3[/tex] = 100.1 g ÷133.34 = 0.7507 moles
Based on the reaction stoichiometry:
1 mole of [tex]AlCl_3[/tex] produces 1 mole of [tex]Al(OH)_3[/tex]
# moles of [tex]Al(OH)_3[/tex] = 0.7507 moles
Molar mass [tex]Al(OH)_3[/tex] = 78 g/mol
Amount of [tex]Al(OH)_3[/tex] produced = 0.7507 moles x 78 = 58.55g
c) Given mass of NaOH = 57.2 g
Molar mass of NaOH= 40 g/mol
moles of NaOH = 57.2 g ÷ 40 = 1.43 moles
Based on the reaction stoichiometry:
3 moles of NaOH produces 1 mole of [tex]Al(OH)_3[/tex]
moles of [tex]Al(OH)_3[/tex] produced = 1.43÷ 3 = 0.4766 moles
Molar mass [tex]Al(OH)_3[/tex] = 78 g/mol
Amount of [tex]Al(OH)_3[/tex] produced = 0.4766 78 = 6.50 g
d) Since moles of [tex]Al(OH)_3[/tex] produced from NaOH is less, NaOH will be the limiting reagent. The amount of [tex]Al(OH)_3[/tex] actually produced is 6.50 g.
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Naming lonic Compounds
Name the following lonic Compounds using the lonic naming rules. Remember, place the metal's name
first, followed by the non-metal element, replacing the ending with ide"
1.SrBr,
2.NaCl
3. Mgs
4. LIP
5. Ko
6. Ca N,
7. Balz
Answer:
1.storantium bromide
2.sodium chloride
3.magnesium sulphide
4.lithium polymer
5.potassium hydroxide
6.calcium nitride
7.it decomposition of tetrafluroborates and hexaflurophosphates
If false rewrite the statements to make them correct True or False.
1. Only particles in the solid state are in motion.
2. The particles of a solid have more energy than those of a gas.
3. In a glass of iced tea, tea is the solute.
What property of water is primary for living organisms? (SC.6.E.7.4) *
1 point
It is odorless.
It does not conduct electricity.
It is tasteless
It is liquid at most temperatures on Earth.
Answer:
It is liquid at most temperatures on Earth.
How would you make up 75 ml of a 45 mg/ml BSA solution?
Answer: see below
Explanation: for 75 ml, take 45*75 mg of BSA and make up to 75 mL with distilled water.
The sexual reproduction of plants occurs through what process? (2 points)
a
Finalization
b
Fermentation
c
Pollen production
d
Pollination
Answer:
Pollination
Explanation: Involves production of male and female. Sexual reproduction is also the flowering of plants.
Which example is NOT a chemical change? *
A. Hydrogen peroxide bubbles in an open wound on your skin.
B. Piece of pizza digested when eaten.
C. Rotting Easter eggs. .
D. Dissolving salt in water.
Answer:
The answer would be D as no chemical change is occuring.
Explanation:
Answer:
D. Dissolving salt in water.
Explanation:
No chemical change is actually occurring when salt is added to water
A nonvolatile organic compound Z was used to make up a solution. Solution A contains 6.00 g of Zdissolved in 100 g of waterand has a vapor pressure of 754.5 mmHgat the normal boiling point of water. Calculate the molar mass of Z in solution A.
Answer:
Molar mass of Z in solution A is 148.2 g/mol.
Explanation:
To solve this, we need to use colligative property about vapor pressure.
In any ideal solution, the vapor pressure of solution is lower than vapor pressure of pure solvent. Formula is:
ΔP = P° . Xm
ΔP = Vapor pressure of pure solvent - Vapor pressure of solution
At the normal boiling point of water (100°C), vapor pressure is 760 mmHg.
Let's replace in the formula, to find out Xm (mole fraction of solute)
760 mmHg - 754.5 mmHg = 760 mmHg . Xm
(760 mmHg - 754.5 mmHg) / 760 mmHg = Xm
Xm → 0.00724
Mole fraction of solute = moles of solute /total moles (st + sv)
In this case, our mole fraction will be
(6 g / MM) / ( (6 g/ MM + 100 g / 18g/mol) = 0.00724
Our unknown is MM (molar mass of Z). We solve the equation:
6 g / MM = 0.00724 . ((6 g/ MM + 100 g / 18g/mol))
6 g / MM = 0.04344 g /MM + 0.0402 g/mol
6 g/MM - 0.04344 g /MM = 0.0402 g/mol
5.95656 /MM = 0.0402 g/mol
5.95656 / 0.0402 g/mol = MM → 148.2 g/mol
The molar mass of Z in solution A is 150 g/mol.
Based on the given information,
• The mass of water given is 100 grams.
• The mass of solute given is 6 grams.
• It is known that the molar mass of water is 18 gram per mole.
Now the moles of water can be calculated as,
[tex]n = \frac{mass}{molar mass}[/tex]
Now putting the values we get,
[tex]n = \frac{100 g}{18 g/mol} \\n = 5.5556 moles[/tex]
• It is known that the vapor pressure of water at 100 degree C (Po) is 760 mmHg.
• The given vapor pressure of solution at 100 degree C is 754.5 mmHg.
• Based on Raoult's law, the vapor pressure of solution = mole fraction of water * Po of water.
The mole fraction of water is,
[tex]= \frac{754.5 mmHg}{760 mmHg} \\= 0.9928[/tex]
The mole fraction of solute is,
[tex]= 1-0.9928\\= 0.00722[/tex]
The mole fraction of solute = n1/n1+n2
Now putting the values we get,
[tex]\frac{n1}{n1+n2} = 0.00722\\\frac{n1+n2}{n1} = \frac{1}{0.00722} \\[/tex]
[tex]\frac{n1+5.56 mol}{n1} = 138.50\\n1 = \frac{5.56 mol}{138.50} \\n1 = 0.040 mol[/tex]
Now the molar mass of solute, Z is,
[tex]Molar mass = \frac{mass}{moles} \\Molar mass = \frac{6.0 grams}{0.04 mol} \\Molar mass = 150 g/mol[/tex]
Thus, the molar mass of Z in solution A is 150 g/mol.
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As you are standing on the beach, the waves appear to be coming towards you. What is actually moving forward and why? A Water is moving towards you replacing the old water because of the winds B Water is moving towards you replacing the old water because of currents C Energy created by currents is moving towards you, and not the water itself. D Energy created by the wind is moving towards you, and not the water itself.
Answer:
B
Explanation:
Because unless you are walking towards it and the ocean is not moving then only you are moving
How many grams of propane, C3H8, are needed to make 140 grams of water?
Answer:
85.6 g
Explanation:
Step 1: Write the balanced combustion equation
C₃H₈ + 5 O₂ ⇒ 3 CO₂ + 4 H₂O
Step 2: Calculate the moles corresponding to 140 g of H₂O
The molar mass of H₂O is 18.02 g/mol.
140 g × 1 mol/18.02 g = 7.77 mol
Step 3: Calculate the moles of C₃H₈ needed to produce 7.77 moles of H₂O
The molar ratio of C₃H₈ to H₂O is 1:4. The moles of C₃H₈ needed are 1/4 × 7.77 mol = 1.94 mol.
Step 4: Calculate the mass corresponding to 1.94 moles of C₃H₈
The molar mass of C₃H₈ is 44.10 g/mol.
1.94 mol × 44.10 g/mol = 85.6 g
what is the characteristics of solid
Answer:
they have there own shape that is not manipulated and they are typically hard
Explanation:
What is the difference between a homogenous and a heterogeneous?
Answer:
Explanation:
A homogeneous mixture consists of one single phase while a heterogeneous mixture consists of two or more phases.
I need 11 12. 13. 14. 15. And 16 please and thank you ❤
Answer:
11.) Radio
12.) Microwave
13.) Infrared
14.) Ultraviolet
15.) X-Ray
16.) Gamma Ray
Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
A hot air ballon will rise in air because:
Answer: C
Explanation:
Hot air is a lot less dense for a few reasons. Hot air essentially means the particles have more kinetic energy, and move around a lot more. Cold air is dense because the particles move a lot less, have less energy, and are closer together.
Answer:
A
Explanation:
Since the balloon itself is heavier than air, it must be filled with a large volume of something much lighter—either hot air or a very light gas, such as helium. Because the combined weight of the balloon and the gas is less than the weight of an equal volume of surrounding air, the balloon rises.
how does a decrease in potential energy during a chemical rwaction relate to the temperature of the surroundings
Answer: If the potential energy of the reaction system decreases, then kinetic energy in the surroundings increases and the temperature of the surroundings rises
Explanation:
The decrease in the potential energy results in an increase in the temperature of the system and surroundings.
Mechanical energy has been described as the sum of the kinetic and the potential energy in the system. With the increase in the potential energy, there has been a decrease in the kinetic energy and vice versa.
The decrease in the potential energy results in an increase in the kinetic energy of the system. The kinetic energy has been termed as the energy of performing work. The rise in the kinetic energy results in an increase in the work done in the system and there has been an increase in the temperature of the system.
Thus, the decrease in the potential energy results in an increase in the temperature of the system and surroundings.
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Which statement best describes how an electromagnetic motor works?
Electrons are moved through a magnet, creating a circuit. That circuit interacts with a current, moving the
conductor in the orientation of the field
Electrons are moved through a current, creating a circuit. That circuit interacts with a magnet, moving the
conductor in the onentation of the field.
Elections are moved through a circuit, creating a current That current interacts with a magnet, moving the
conductor in the orientation of the field
Electrons are moved through a magnet creating a current. That current interacts with a circuit, moving the
conductor in the onentation of the field
Answer:
electrons are moved through a magnet creating a current. the current instracts with a circuit, moving the conductor in the onentation of the field
(CH3CH2)2CHCH(CH3)2 Check all that apply. Check all that apply. alkane alkene alkyne cycloalkane cycloalkene cycloalkyne aromatic hydrocarbon
Answer:
Alkane
Explanation:
Alkane is a class of organic compounds that contain only carbon and hydrogen and the carbon atoms are connected to each other by single bonds.
Now, if we look at the molecule whose condensed structural formula is shown in the question, we will notice that the compound can only contain single bonds. That is, the molecule is a saturated hydrocarbon(alkane).
I have drawn out the full structure of the compound to illustrate this point.
PLEEAASSEE HELP ITS ALREADY WAY PAST DUE AND ILL GIVE BRAINLIEST
Which of the following would be the evidence of a physical change?
A. unexpected change in odor
B. change in state of matter
C. formation of bubbles
D.precipitate was formed
Answer:
A. unexpected change in odor
Explanation: Common physical changes include melting, change of size, volume, color, density, and crystal form. Example the classic baking soda and vinegar reaction provides evidence of a chemical change due to the formation of a gas and a temperature change.
Most of Earth's major earthquakes are caused by
x
seasonal heating and cooling of Earth's surface
B
x
weathering of rock at Earth's surface
C
x
earth's gravitational attraction to the Moon
D
x
faulting of rock in earth's crust
Answer:
d
When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel.
Which of the following was a major goal of the National Association for the Advancement of Colored People when it
was formed in 1909?
to end integration
to end segregation
to support black nationalism.
O to support the accommodationist approach
When’s end
Answer:
to end segregation
Explanation:
National Association for the Advancement of Colored People (NAACP), interracial American organization created to work for the abolition of segregation and discrimination in housing, education, employment, voting, and transportation; to oppose racism; and to ensure African Americans their constitutional rights.
To end segregation was a major goal of the National Association for the Advancement of Colored People when it was formed in 1909. Therefore, the correct option is option B.
What is NAACP?
A group of individuals led by W. E. B. Du Bois, Mary's White Ovington, Moorfield Storey, and Ida B. Wells founded the National Association over the Advancement of Coloured People (NAACP) in 1909 as an interracial effort to advance fairness for African Americans. Roy Wilkins and Thurgood Marshall were among the group's leaders.
"To ensure the equal treatment in politics, schools, society, and the economy of the liberties of all persons as to eliminate ethnicity-based discrimination" is its stated objective for the twenty-first century. Political lobbying, public relations campaigns, and legal team-developed lawsuit strategies are just a few of the national NAACP initiatives. To end segregation was a major goal of the National Association for the Advancement of Colored People when it was formed in 1909.
Therefore, the correct option is option B.
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How many atoms are in 4.36 moles of copper ?
Answer:
Moles of Cr in 4.36×1023 atoms of Cr?
I mass of Cr = 52.00
A's# = 6.02x10^23
I don't know how to approach this. Help?
Update:
Moles of Cr in 4.36×10^23 atoms of Cr?
Update 2:
ALSO......
moles of Cu in 9.7×10^21 atoms of Cu?
moles of C2H6 in 2.75×10^23 molecules of C2H6?
Explanation:
Which sequence of coefficients will balance the following equation?
Na (s) + O2 (g) → 2Na20 (s).
Answer:
option c. 4,1,2
Explanation:
No. of atoms of each element in reactant is equal to that of products
Which Kingdom does the organism belong to?
Animalia
Protista
Fungi
Plantae
pls help guys
please help I really need this
Answer:
You eat a hamburger and breathe in oxygen.
Oxygen goes immediately from your lungs to blood vessels to cells.
Food molecules in the hamburger are broken down into glucose in the digestive system.
Explanation:
If 0.332 mol of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction?
Answer:
53.6 g
Explanation:
Step 1: Write the balanced equation
2 Zn + Pb(SO₄)₂ ⇒ 2 ZnSO₄ + Pb
Step 2: Calculate the moles of ZnSO₄ produced from 0.332 moles of Zn
The molar ratio of Zn to ZnSO₄ is 2:2. The moles of ZnSO₄ produced are 2/2 × 0.0332 mol = 0.0332 mol.
Step 3: Calculate the mass corresponding to 0.332 moles of ZnSO₄
The molar mass of ZnSO₄ is 161.44 g/mol.
0.332 mol × 161.44 g/mol = 53.6 g