Answer:
See explanation
Explanation:
The to main chemicals that lead to acid rain are SOx and NOx. The major source of oxides of sulphur are power plants while the major source of oxides of nitrogen is the combustion of fossil fuels.
B. There are two types of acid rain; wet and dry. Wet type acid rain occurs when NOx and SOx combine with water vapour in the atmosphere and fall as precipitation while in dry type, wind deposits these acidic gases/matter on the surfaces of buildings, cars, trees etc. Rain water washes off these acidic deposits and the runoff is more acidic than the rain water.
C. Natural rain water has a pH of about 5.5 due to the fact that water dissolve CO2 in the atmosphere. This means that natural rain water is also slightly acidic. Rain water that dissolves SOx or NOx is often more acidic than these hence the term 'enhanced acid rain' may be used.
Again, since precipitation could be solid or liquid, the term 'acid deposition' is better.
True or False: Bald eagles have white heads, which is an inherited trait.
A
True
B.
False
Answer:
A true
Explanation:
Bald eagles have white heads distinguishing them from the rest of their body(which is dark brown
Can someone please check my answer??!!!
Answer:
I think its correct
High conductivity and malleability are characteristics of
2 points
Stu Dent wants to create a salt water solution. He uses 0.614 moles of salt and 182 milliliters of water. What is the molarity of the solution?
Type your answer...
Answer: The molarity of solution is 3.37 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]
where,
n = moles of solute = 0.614
[tex]V_s[/tex] = volume of solution in ml = 182 ml
Now put all the given values in the formula of molarity, we get
[tex]Molarity=\frac{0.614\times 1000}{182}=3.37M[/tex]
Therefore, the molarity of solution is 3.37 M
When bonds are (broken/formed) there is a positive energy change.
Answer: Hello i am confused are you asking a question?
Explanation:
A flask is filled with 50.0 ml of 0.15 M HCl acid. Exactly 0.054 grams of CaCo3 are placed in the acid,
neutralizing some of it. How many moles of NaOH must be added in a titration that neutralizes the rest
of the acid?
Answer:
See explanation
Explanation:
2HCl(aq) + CaCO3(aq) ------->CaCl2(aq) + CO2(g) + H2O(l)
Number of moles of acid present = 50/1000 * 0.15 = 0.0075 moles
Number of moles of calcium carbonate = 0.054g/100 g/mol = 0.00054 moles
2 moles of HCl reacts with 1 mole of calcium carbonate
x moles of HCl reacts with 0.00054 moles of calcium carbonate
x = 2 * 0.00054/1
x = 0.00108 moles of HCl
Amount of acid left = 0.0075 moles - 0.0075 moles = 0.00642 moles
Reaction of HCl and NaOH
HCl(aq) + NaOH(aq) ------> NaCl(aq) + H2O(l)
Since the reaction is in the mole ratio of 1:1
0.00642 moles of HCl is neutralized by 0.00642 moles of NaOH
Gaseous ethane CH3CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. What is the theoretical yield of carbon dioxide formed from the reaction of 1.8g of ethane and 4.6g of oxygen gas?
Answer:
mass of CO₂ produced = 5.06 g of CO₂
Explanation:
Equation of the reaction: 2CH₃CH₃ + 5O₂ ---> 4CO₂ + 6H₂O
From the equation of the reaction, 2 moles of gaseous ethane reacts with 5 moles of oxygen gas to produce 6 moles of water.
molar mass of ethane = 30 g/mol
molar mass of oxygen gas = 32 g/mol
number of moles of ethane present in 1.8 g = 1.8/30 = 0.06 moles
number of moles of oxygen gas present in 4.6 g = 4.6/32 = 0.14375 moles
mole ratio of oxygen gas to ethane = 2.4 : 1
Therefore, oxygen is the limiting reactant
0.14375 moles of oxygen will react with 0.06 moles of ethane to produce 4/5 * 0.14375 moles of CO₂ = 0.115 moles of CO₂
molar mass of CO₂ = 44 g/mol
mass of CO₂ produced = 0.1725 * 44
mass of CO₂ produced = 5.06 g of CO₂
What is the answer for 250 K = ? °C
Answer:
This is your answer ☺️☺️☺️
Answer:
-23.15
Explanation:
What is the partial pressure of hydrogen gas in a mixture of hydrogen Nitrogen, and helium if the total pressure is 700 partial pressure is 155 mmHg, and the partial pressure of nitrogen is 265 mmHg?
CAn someone help me with this?
Answer:
I think D. sorry if I'm wrong:)
What is the electronegativity difference between oxygen and fluorine? What type of bond is this?
Answer:
Veja, por exemplo, que os elementos mais eletronegativos são os que estão no canto superior direito da tabela, isto é, o flúor (4,0) e o oxigênio (3,5), e os menos eletronegativos são os que estão no canto inferior esquerdo, que são o frâncio (0,8) e o césio (0,8).
Explanation:
question, if thallium (atomic number 81) has an effective nuclear charge of 3+, how many core electrons does thallium have? is it 78?
Answer:
Yes it is 78 because it has lost three electrons and it has a positive nuclear charge
What is the last metamorphic rock
before the rock starts to melt and turn
back into magma/lava
Answer:
Explanation:
marble perhaps
Which salt shows the least change in solubility from 0 ⁰ – 100 ⁰ C?
Answer:
From the solubility curve, which salt shows the least change in solubility as the temperature increases? NaCl
Explanation:
16.1 g of bromine are mixed with 8.42 g of chlorine to give an actual
yield of 21.1 g of bromine monochloride.
The question is complete, the complete question is;
16.1g of bromine are mixed with 8.42g of chlorite to give an actual yield of 21.1g of bromine monochloride.
Answer:
91 %
Explanation:
Br2 + Cl2 ------>2BrCl
Number of moles of Chlorine = 8.42/71 = 0.119 moles
If 1 mole of Cl2 yields 2 moles of BrCl
0.119 moles of Cl2 will yield 0.119 moles * 2/1 = 0.238 moles of BrCl
Number of moles of Br2 reacted = 16.1/160 = 0.1 moles
If 1 mole of Br2 yielded 2 moles of BrCl
0.1 moles of Br2 yields 0.1 * 2/1 = 0.2 moles of BrCl
Bromine is the limiting reactant.
Mass of BrCl produced = 0.2 moles * 115.357 g/mol = 23.07 g
Theoretical yield = 23.07 g
Actual yield = 21.1 g
Percentage yield = Actual yield/Theoretical yield * 100
= 21.1/23.07 * 100 = 91 %
if 135 grams of MgCl2 are dissolved in a 1.0 L solutions, what is the molarity of the solution?
Answer: 1.418 M
Explanation:
molarity = moles of solute/liters of solution or [tex]M=\frac{mol}{L}[/tex]
first we have to find our moles of solute (mol), which you can find by dividing the mass of solute by molar mass of solute
mass of solute: 135 g
molar mass of solute: 95.21 g/mol
let's plug it in:
[tex]\frac{135 g}{95.21 g/mol} = 1.418 mol[/tex]
next, we plug it into our original equation:
[tex]\frac{1.418 mol}{1.0 L} = 1.418 M[/tex]
Balance the following chemical equation
Mg + O₂ → MgO
Answer:
2Mg + O₂ → 2MgO
Explanation:
Find the moles of CaCO3 in 23.4 g of calcium carbonate
Answer:
0.0326 moles
explanation
Answer:
0.234 mol
Explanation:
m(CaCO3) = 23.4g
n(CaCO3) = ?
M(CaCO3) = 100.09 g/mol
n = m/M
n(CaCO3) = 23.4 / 100.09
= 0.234 mol (3 s.f.)
How does stoichiometry work?
Answer:
stochiometry works with measuring quantitative relationships and used to determine the amount of products and reactants that are produced or needed in a reaction
Answer:
Stoichiometry is the calculation of reactants and products in chemical reactions in chemistry. Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals.
Think about chemicals you may have in your home and list as many as you can think of:
Sucrose; C12H22O11
C9H8O4; acetyl salicylic acid
H2O2; hydrogen peroxide,
NaOH; sodium hydroxideExplanation:
In an ionic compound a
Nisbonded to a
The element in the compound that has a positive charge is called the
while the element with the negative charge is called the
Answer:
In an ionic compound a metal is bonded to a nonmetal.
The element in the compound that has a positive charge is called the cation
while the element with the negative charge is called the anion.
Explanation:
In an ionic compound a metal is bonded to a nonmetal.
The element in the compound that has a positive charge is called the cation
while the element with the negative charge is called the anion.
On earth what is the main force that resists all motion?
Answer: Friction
Explanation: Friction is a force that opposes motion. When two objects are in contact, friction is acts in a direction opposite to the motion of the object. Please give me brainliest!!!!!!!
Answer: friction: The resistance an object meets when moving over a surface or through a gas or liquid; it is the force that resists the motion of two surfaces that are touching each other.
Explanation:
In which orbitals would the valence electrons for selenium be placed ?
Answer:
Valence electrons of selenium will be placed in s and p-orbitals.
List the stages of the Flowering Plant Life Cycle starting with the seed
a large molecule made up of smaller molecules called amino acids
ATP
carbohydrate
lipid
protein
phospholipid
nucleic acid
Answer:
Protein
Explanation:
what is the volume in liters of 5.25 moles of He gas?
Answer:
[tex]\boxed {\boxed {\sf 117.6 \ L \ He}}[/tex]
Explanation:
Regardless of the type of gas, 1 mole at standard temperature and pressure (STP) occupies a volume of 22.4 liters. In this case the gas is helium (He).
We can set up a ratio.
[tex]\frac { 22.4 \ L \ He}{ 1 \ mol \ He}[/tex]
Multiply by the given number of moles.
[tex]5.25 \ mol \ He *\frac { 22.4 \ L \ He}{ 1 \ mol \ He}[/tex]
The moles of helium will cancel.
[tex]5.25 *\frac { 22.4 \ L \ He}{ 1 }[/tex]
[tex]5.25 * { 22.4 \ L \ He}[/tex]
Multiply.
[tex]117.6 \ L \ He[/tex]
5.25 moles of helium gas at STP is 117.6 liters of helium.
Why are fossil fuels considered to be a nonrenewable resources? Please help
Answer:
They're considered nonrenewable because they take millions of years to develop. They can't be renewed as fast as we're taking them.
Which intermolecular forces exist in dry ice, CO2(S)?
Answer:
Ice (solid H2O) and dry ice (solid CO2) are examples of molecular solids. Molecular solids are held together by intermolecular forces—dispersion forces, dipole–dipole forces, and hydrogen bonding. Ice is held together by hydrogen bonds, and dry ice is held together by dispersion forces.
Is neon an atom or ion
someone please help with this
Answer:
a. triple bond
b.diatomic atom
c. covalent bond
d. non polar covalent bond
e. covalent bond
f. sigma bonds