Answer:
Grignard reagents are formed by the reaction of magnesium metal with alkyl or alkenyl halides. They're extremely good nucleophiles, reacting with electrophiles such as carbonyl compounds
Explanation:
hope this helps!
The diagram shows a food web,
Mountain
lion
Deer
Hawk
Fox
Rabbit
Owl
Snake
Green
plant
Mouse
What is most likely to happen if the snake population is
wiped out?
The higher animals in the food chain would probably not survive.
3
What is compression?
A
When alr molecules move apart from one another.
B
When alr molecules collide with one another.
C
When alr molecules become packed tightly together.
D
When alr molecules move around freely.
Which fossil fuel is causing the most pollution? PLEASE HELP TIS ASSIGNMENT IS PAST DUE I NEED HELP
Answer:
Coal is the fossil fuel causing the most pollution.
Explanation:
I hope this helps.
can acidic oxide react with acids?
If not, why?
Answer:
no
Explanation:
Acidic oxides, or acid anhydride, are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either nonmetals or of metals in high oxidation states.
Answer:
The answer is no!
Acidic oxides, or acid anhydride, are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either nonmetals or of metals in high oxidation states.
This model shows a single unit of a compound containing several elements what is the chemical formula for the substance
Explanation:
First Question
- The correct chemical formular is ; Al2(SO4)3
Second question
The following applies;
- The mass of the products is the same as the mass of the reactants
- At least one new product formed is a gas
- Molecules are changing into different molecules
Third Question
- Zn + HCl → ZnCl2 + H2
Fourth Question
- The atoms in the original substances regroup and form a different substance
- Matter is conserved
- The same atoms are present before and after the reaction
Write about a time that you were really confused in Science class. What did you do? Who did you get help from? How did you explain what was confusing you?
when I was really confused in science class and I think a lot but not found in book then I get help from my friend but he also don't know that and then finally my teacher solves it the question was what makes a rainbow .
If the pOH of a solution is 9.1, what is the concentration of OH- ions in that solution?
Answer:
7.9432*10^-10 or 10^-9.1
Explanation:
pOH=-log[OH]
How many protons are in Calcium - 41?
Answer:
the correct answer to your question is 20
This type of cloud are high feathery clouds made of ice crystals...
A cirrus
B nimbus
C cumulus
D stratus
Answer:
the answer is a because cirrus clouds have that definition
What happens to the rate constant as activation energy increases?
Explain the law of conservation of mass and give an example that demonstrates it.
Answer:
Mass Cannot be created or destroyed. So everything that goes into a chemical reaction has to come out the other side, like cars driving into a tunnel. Any balanced equation of a chemical reaction is an example
Explain what is "Heredity".
chemistry help please!!
Answer:
no so boring........................
How is hess's law applied in calculating enthalpy
Answer: To develop a strategy for the order in which you add the various equations.
Explanation:
In a Hess’s Law problem, you have to develop a strategy for the order in which you add the various equations. hope this helps <3
The statement, that describes Hess's law applied in calculating enthalpy is "all the reactions in a path are added together."
What is Hess' law?Hess' law of continuous heat summation, abbreviated as Hess' law. Hess' law says that the rise in enthalpy, or reaction heat at constant pressure, in a chemical reaction is independent of the process between the starting and final states.
According to Hess's Law, the enthalpy change for a chemical reaction is independent of the route travelled. This indicates that the overall enthalpy change will be the same regardless of how many steps are completed. Because enthalpy is a state function, we can calculate the overall change in enthalpy by simply adding the changes at each step along the way until the product is obtained All processes must take place at the same temperature, and the equations for each step must balance.
In a Hess's Law problem, you must devise a technique for adding the numerous equations in the correct order.
Hence the correct answer is B.
Learn more about Hess's Law here
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26. Which compound, chloroacetic acid or iodoacetic
acid, most likely has the lower boiling point, and
why?
(A) Chloroacetic acid, because the London
dispersion forces among its molecules are
weaker
(B) Chloroacetic acid, because the dipole-dipole
forces among its molecules are weaker.
(C) Iodoacetic acid, because the London
dispersion forces among its molecules are
stronger.
(D) Iodoacetic acid, because the dipole-dipole
forces among its molecules are stronger.
The london dispersion forces are stonger in iodoacetic acid than chloroacetic acid making chloroacetic acid to have a lower boiling point.
What are london dispersion forces?The London forces are forces are intermolecular forces that act on compounds depending on the size of the molecule.
We must note that iodoacetic acid is a larger molecule than chloroacetic acid hence the london dispersion forces are stonger in iodoacetic acid than chloroacetic acid making chloroacetic acid to have a lower boiling point.
Learn more about boiling point: https://brainly.com/question/365923
When is Africa's Serengeti plains herbivores migrate across this area following pls pls help me out
Plz help me !!!!!!!!!!!!!!!!!!!
Answer:
K3N
Explanation:
writing formulas from valency
the valency of potassium is 1
the valency of nitrogen is 3
that will be
K. N
1. 3
cross multiply
that will be
K3N
Which of the following is similar in size to an atom?
A ball used in sports, such as a basketball
A large building, similar to a shopping mall
A particle you cannot see with your eyes
A seed of a fruit from an apple or orange
Which of the following is similar in size to an atom?
A ball used in sports, such as a basketball
A large building, similar to a shopping mall
A particle you cannot see with your eyes
A seed of a fruit from an apple or orange
Answer:
A particle you cannot see with your eyes
Explanation:
An atom is the smallest indivisible particle of an element. It is the particle that determines the chemical properties of an element. However, an atom is a very small-sized particle, of about 10^-10m.
Based on how small a particle is, it cannot be seen with the naked eyes and hence, requires that one uses a microscope to view it.
In an ideal situation where no heat energy is produced, what is the relationship between the chemical energy provided by the battery and the electrical energy produced according to the Law of Conservation of Energy?
A. The chemical energy should be more than the electrical energy.
B. None of the above
C. The chemical energy should be equal to the electrical energy.
D. The chemical energy should be less than the electrical energy.
Answer: im going to say it is b
Explanation:
nomenclature of calcium chloride
Answer:
CHEBI:3312 - calcium dichloride
Explanation:
Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl2.
Answer:
CHEBI:3312 - Calcium dichloride
How many levels of biological classification are represented in the taxonomic biological name for an organism.
Answer:
There are two Two level represented in biological name....
Explanation:
There are two level of classification represented in biological name. Genus and specie.....
In which object does chemical energy most likely transform into electrical energy?
2. How will damage to the adrenal medulla affect the individual? Select the best prediction(s).
A. Blood glucose will decrease
B. Blood glucose will increase
C. Respiration rate will decrease
D. Respiration rate will increase
E. Blood pressure will decrease
F. Appetite will increase
Answer:
F,A
Explanation:
2NO(g) + O2 → 2NO2
In one experiment, 1.866 mol of NO is mixed with 4.503 mol of O2.
a)Determine the limiting reagent
b) Calculate the number of moles of NO2 produced.
Answer:
a)NO has smaller moles
b)1.866
Describe an experiment that can be done to prove the law of conservation of mass?
Explanation:
Given alka - seltzer and a flash, students design and conduct an experiment to prove the law of conservation of mass.Surface tension _____. A. Causes beads of water to spread out B. May be increased by detergents C. Is an inward force that tends to minimize the surface area of a liquid D. Is decreased by hydrogen bonding
Answer:
C. Is an inward force that tends to minimize the surface area of a liquid
Explanation:
Surface tension is a skin-like proper of water that is explained by its property or ability to form hydrogen bonds. The water molecule has the ability to bind the molecules from all sides that surrounds it. The force of action on each of the molecules is balanced. The surface tension is a more inward phenomenon and it holds the droplet in a spherical shape.What is TRUE about the element Fluorine?
It has the same number of protons, neutrons and electrons
It has more neutrons than electrons
It has a mass number of 9
It is an isotope
The atomic number is 19
Answer:
It has the same number of protons, neutrons and electrons
Explanation:
A neutral atom of non-isotopic fluorine should have 9 electrons, 9 protons and 9 neutrons.
How many molecules are in 385 grams of CO2?
Answer:
8.748111203262969
Explanation:
In a reaction, the theoretical yield was 80 g, but the actual yield was 60 g. What was the percentage yield?
Answer:
75%
Explanation:
percent yield is the actual yield divided by the theoretical (predicted) yield, then multiplied by 100 to get a percentage.
60/80 = 0.75
0.75 x 100 = 75%
Answer:
33.34 %
Explanation:
Given that,
Actual yield = 60 g
Theoretical yield = 80 g
We need to find the percentage yield. It can be calculated as follows :
[tex]\%=\dfrac{Acutal-theoretical }{Actual}\times 100\\\\=\dfrac{60-80}{60}\times 100\\\\=33.34\%[/tex]
So, the required percentage yield is 33.34 %.
You stir your hot cocoa with a silver spoon that has a mass of 0.032 kg. The spoon’s temperature increases from 20 K to 60 K. What is the change in the spoon’s thermal energy? (Hint: Use the table in Figure 6 to find the specific heat of silver.) SHOW YOUR WORK.
Formula:
Answer:
help!!!!!!
Answer:
A
Explanation:
A