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.
Which of the following best explains
why ionic bonds form between ions?
A. Ions with opposite charges
are attracted to one another.
B. lons tightly bond together because
they have identical physical structures.
C. Positive ions attract other positive ions.
D. Negative ions attract
other negative ions.
Explanation:
B has a correct statement
3)Methanol can be produced as follows: CO (g) + 2 H2 (g) + CH4O (g)
If 250.0 L of hydrogen gas are reacted with excess CO at STP, how many grams of CH40 can be produced?
In which object does chemical energy most likely transform into electrical energy?
which nonmetal has the greatest chemical activity?
Answer:
element fluorine
Explanation:
Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
Answer:
element fluorine
Explanation:
Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
When is Africa's Serengeti plains herbivores migrate across this area following pls pls help me out
Most hot air balloons are round. Yes, you can have some other shapes like this one, but its shape is still rounded. Using the assumptions, explain why a square hot air balloon would be hard to make.
A square hot air balloon would be hard to make because the round shape of traditional hot air balloons allows for even distribution of heat, which is necessary to maintain the balloon's lift and stability.
What is a hot air balloon ?A hot air balloon is a balloon filled a heated air which can rise above the atmosphere. In a round balloon, the heat from the burner is evenly distributed around the circumference of the balloon, causing the air inside to heat up and rise, which in turn causes the balloon to lift.
If a hot air balloon were to be made in a square shape, the heat would be distributed unevenly and concentrated in certain areas. This could cause the balloon to become unstable, as the hot air would rise in some areas but not others, leading to uneven lifting and potential loss of control.
Additionally, the corners of the square shape would be more susceptible to damage and could create weak points in the structure of the balloon.
Therefore, while it is possible to create hot air balloons in other shapes, the traditional round shape has been found to be the most effective and efficient for maintaining the necessary heat distribution and stability required for safe and successful flight.
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How many liters would you need to make a 2 M solution if you have 3 mol of Sodium Hydroxide
Answer:
A 1 molar (M) solution will contain 1.0 GMW of a substance dissolved in water to make 1 liter of final solution. Hence, a 1M solution of NaCl contains 58.44 g.
Explanation:
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.
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.Scientists often repeat experiments multiple times.
Why is this important?
A.
Repeating an experiment helps to verify the results.
B.
Repeating an experiment turns a hypothesis into a theory.
C.
Repeating an experiment allows scientists to test different variables.
D.
Repeating an experiment gives scientists something to do while they think of new hypotheses.
Answer:
A
Explanation:
Hi! The reason scientists often experiments multiple times is because repeating an experiment helps to verify the results.
if you mix the two liquids, propanol and vegetable oil, are they miscible or immiscible?
Answer:
it would be immiscible
Explanation:
They would not mix similar to oil and water
The answer is true
hope this helps :)
Which of the following is an empirical formula?
will mark brainlyist
Answer:
I believe its the 3rd option
Explanation:
Answer:
Number 3
Explanation:
C3H8, C3H8 is an example of an empirical formula. It represents the relative number of atoms in the simplest ratio.
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
chemistry help please!!
Answer:
no so boring........................
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.
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:
A scuba diver swims deeper and deeper into the ocean. What happens to the nitrogen in her blood as she goes deeper
Answer:
it compresses under the pressure.
Explanation:
when she comes up, it will re-expand as pressure goes down- this is why they have to be very careful how fast they come back up.
Answer:
If a diver goes through too great of pressure change too quickly, their body cannot eliminate all of the expanding nitrogen and the excess nitrogen forms bubbles in their tissues and blood. These nitrogen bubbles can cause decompression sickness (DCS) by blocking blood flow to various parts of the body, causing strokes, paralysis, and other life-threatening problems.
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.
What does AS> O mean?
AS> 0 mean the system has become more random. This means that there is increase in entropy.
What is entropy?Entropy, in the realm of thermodynamics, quantifies the level of chaos or unpredictability within a system. A system characterized by heightened entropy exhibits greater disorder, whereas a system marked by diminished entropy reflects a higher degree of organization.
When AS > 0, it signifies an increase in the entropy of the system. This denotes a shift toward increased disorder or randomness within the system.
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PLEASE HELPPP AND THANK YOUUUU
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
A 2.0 L bag of potato chips in Denver is that 15 C0 print 82 ATM. The same bag is brought to the top of long peaks in the cold winter day. If the back and only spent 2.5 L before exploding and along peak has a temperature of negative 5C and a pressure of 0.45 ATM for the bag explode
Answer:
hello your question is poorly written below is the complete well written question
.A 2.0 L bag of potato chips in Denver is at 15oC and 0.82 atm. The same bag is brought to the top of Longs Peak on a cold winter day. If the bag can only expand to 2.5 L before exploding and Longs Peak has a temperature of -5oC and a pressure of 0.45atm, will the bag explode? Use the combined gas law to prove this to yourself
answer : The bag will explode
Explanation:
Given data :
Volume of bag ( v1 ) = 2 liters
Initial pressure ( p1 ) = 0.82 atm
Initial temp ( T1 ) = 15 + 273 = 288 k
Final Pressure on long peak (P2) = 0.45 atm
Final temp on Long peak (T2) = (273 - 5 ) K = 268 K
Determine the Final volume in long peak to know if the bag will explode
applying the gas laws
P1v1 / T1 = P2V2 / T2
V2 = p1*v1*T2 / p2 *T1
V2 = ( 0.82 * 2 * 268 ) / ( 0.45 * 288 )
= 3.39 Liters
since final volume ( V2 ) > ( v1 ) the bag will explode
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.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
Use the model provided to select ALL of the examples of mixtures.
A) iced tea
B) salt water
C) table sugar
D) orange juice
E) aluminum oxide
Answer:
Explanation:
Ice tea
Salt water
Orange juice
How many molecules are in 385 grams of CO2?
Answer:
8.748111203262969
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
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 %.
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: