Answer:
??
Explanation:
The image shows the ________ formula of methyl formate
a- structural
b-skeletal
c- molecular
d- empirical
Answer:
Structural formula
Explanation:
This is because structural formula is use to show or indicate chemical bonds that are present between atoms of molecules. structural formula comprises of symbols that represent the atoms which are connected by short lines which indicate the presence chemical bonds which could be single line, double lines or even triple lines.
is the distilled water/acidic/basic/netural?
Distilled Water Has A Neutral pH, Which Means It Is Neither Acidic Nor Basic. Therefore, It's Neutral.
3)
:NEN:
How many nonbonding electrons are on each nitrogen atom?
A)
0
B)
2
c)
4
D)
6
4)
-))
Answer:
your answer is C
Explanation:
The electron-dot structure of NH3 places one set of nonbonding electrons in the valence shell of the nitrogen atom. that means there are three bonded atoms and one single pair for a coordination number of four surrounding the nitrogen, the same occurs in water to. along with the Lewis dot structure for ammonia, NH3. the non bonding atoms are basically like hydrogen atoms the try to refuse to bond and they can't be fused unless the right conditions are met.
what happens to the electrons in an ionic bond and a covalent bond?
Answer:
In ionic bonding, atoms transfer electrons to each other. Ionic bonds require at least one electron donor and one electron acceptor. In contrast, atoms with the same electronegativity share electrons in covalent bonds, because neither atom preferentially attracts or repels the shared electrons.
Answer:
In ionic bonding,
atoms transfer
electrons to each
other. Ionic bonds
require at least one electron
donor and one electron
acceptor. In contrast, atoms
with the same electronegativity
share electrons in covalent
bonds, because neither atom
preferentially attracts or repels
the shared electrons.
A sample of hydrogen changes its pressure from 756 torr to 499 torr while the temperature remains constant. After the pressure is reduced, the volume of the gas is 789 mL. What was the original volume?
P1 = 756 torr
P2 = 499 torr
V2 = 789 mL
V1 = ?
applying Boyle's Law
P1 * V1 = P2 * V2
756 torr * V1 = 499 torr * 789 mL
V1 = 499 torr * 789 mL / 756 torr
V1 = 520.78 mL
Gold can be pounded out to make a foil only a few atoms thick because of
A. Metallic Bonds
B. Ionic Bonds
C. Valence Bonds
D. Covalent Bonds
Answer:
A. Metallic Bonds
Explanation:
Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions.
Which type of a reaction is best represented by the equation - AB + CD → AD + BC?
Answer:
AB + CD → AD + BC
Explanation:
This is a double displacement reaction. It is also known as precipitation reaction.
Two tons of water is pumped into a tank 15 ft. High in 5 minutes. Determine the power output of the pump. (Note: One ton is equal to 2,000 lb. And remember to convert the minutes to seconds.)
Answer:
200 lb•ft/s
Explanation:
From the question given above, the following data were obtained:
Force (F) = 2 tons
Time (t) = 5 mins
Height (h) = 15 ft
Power (P) =?
Next, we shall convert 2 tons to pound. This can be obtained as follow:
1 ton = 2000 lb
Therefore,
2 tons = 2 × 2000
2 tons = 4000 lb
Next, we shall convert 5 mins to seconds. This can be obtained as follow:
1 min = 60 s
Therefore,
5 mins = 5 × 60
5 mins = 300 s
Finally, we shall determine the power of the pump. This can be obtained as follow:
Force (F) = 4000 lb
Time (t) = 300 s
Height (h) = 15 ft
Power (P) =?
P = F × h / t
P = 4000 × 15 / 300
P = 60000 / 300
P = 200 lb•ft/s
Thus, the power of the pump is 200 lb•ft/s
Answer:
It's 200 ft-lb/sec
Explanation:
I did it before!
C + O2 + CO2
What type of reaction occurs when carbon dioxide is formed from carbon and oxygen?
Answer:
combustion reaction.Explanation:
It is a combination reaction as carbon combines with oxygen to form carbon dioxide. It is a combustion reaction as carbon is burnt in the presence of oxygen.
name two examples which are not considered as matter
Answer:
Light and Sound can be considered as non-matter.
Explanation:
Various forms of Energy like Heat, Sound, Light can be considered as non-matter
balance the equation below SO2+O2>SO3
Explanation:
The balanced equation is 2SO2+O2→2SO3
6.
Ammonia (NH3) acts as a weak base in aqueous solution. What is the acid that reacts with this base
when ammonia is dissolved in water?
(A) NHA
(B) H2O
(C) Oxygen, which is always dissolved in water
(D) None of the above, there are no acids in pure water
Answer:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on eight comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you.!Explanation:
Ammonia acts as a weak base in aqueous solution. Water is the acid that reacts with this base when ammonia is dissolved in water.
What is a base?According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.
Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.
They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.
Learn more about base,here:
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formation of ionic bond is affected by
Answer:
Ionization energy, electronegativity, and lattice energy are the factors that influence the formation of ionic bonds of elements.
help please! asap!
Which of the following experiments could you perform to investigate the effect temperature has on the volume of a gas? ( AKS 5b DOK 2)
A.
Measure the pressure of the air in a tire on a cold day, a warm day, and a hot day.
B.
Measure the volume of a balloon filled with room temperature air. Place the balloon in a freezer for an hour and then measure its volume again.
C.
Stretch a balloon over the top of a beaker filled with baking soda and vinegar and observe how the balloon changes volume.
D.
Inflate one balloon to a large volume and another balloon to a small volume. Measure the temperature of the air released from both balloons.
Answer:A
Explanation:
Answer:
m
Explanation:
Oleic acid's melting point is 14°C and it's boiling point is 360°С. What phase is this substance
at room temperature 25°C?*
A. Solid
B. Liquid
C. Gas
D. Impossible to tell
Why aren’t dominant genes ALWAYS more common?
Answer:
selective breeding
Explanation:
Example: pretend that rabbits can only be brown or black and black is dominant. If only the brown rabbits reproduce it will eventually be more common Hope this helps
Venus Fly trap is a great example of which type of tropism?
a
Thigmotropism
b
Gravitropism
c
Phototropism
d
Hydrotropism
Which of the below will effect colligative properties the most?
Be3N2
OK₂S
CO
Mgs
Answer:
CO
Explanation:
Before a child takes a bath, his mother mixes bubbles into bath water. Physical or Chemical Change?
Answer:
so i think correct answer is chemmical
Help please!!!!!!!!!!!!!!!!!!!!!!!!
A solution's hydrogen ion concentration is 1 x 10-5M.
What is the pH?
Answer:
pH=5
Explanation:
-log(1 x 10-5)=5
To make 4.25 L of 3.0 M NaOH solution how much of a 9.0 M NaOH solution would be needed?
Answer:
1.41 L
Explanation:
Initially the concentration of NaOH was 9.0M (say M1) finally the concentration becomes 3.0M (say M2)
intial volume (say V1) is to be calculated when the final volume (say V2) is 4.25L
we have,
M1V1=M2V2
or V1=(M2V2)/M1= 3.0×4.25/9.0= 1.41L
Hence 1.41 L of 9.0M solution is required to prepare 4.25L of 3.0M NaOH solution
. Chalk is made of CaCO 3 . How many molecules are in 5 grams of chalk?
Answer:
20.02 grams of chalk.
Explanation:
what is the advantage of rusting
Answer:
Provide more strength
Explanation:
Rust is metal that has been oxidised . Oxides are usually more fragile and porous than their crystals metal equivalents. Some oxides, such as Aluminum oxide, are useful because they have a thin, strong shell that protects the metal from further corrosion.
Which property of sulphuric acid makes it suitable to use as a catalyst for the preparation of esters?
What number is pointing to the area where magma is less dense due to
heat?
Answer:
I think it's 2
Explanation:
The magma gets so hot, it floats up before cooling and sinking again
Mariah wants to determine how much energy is needed to change 500 g of liquid water at 100°C to steam at 100°C. What information will BEST help her make this
calculation?
You start with a container that is 8L big and the temperature in the room is 326K.
If the you take the container out in the heat at 352K, how big will it get?
Answer:
The new volume is 8.64 L.
Explanation:
Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure. For a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases.
In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:
[tex]\frac{V}{T} =k[/tex]
Being an initial state 1 that modifies its conditions until a final state 2, it is fulfilled:
[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]
In this case:
V1= 8 LT1= 326 KV2= ?T2= 352 KReplacing:
[tex]\frac{8L}{326 K} =\frac{V2}{352 K}[/tex]
Solving:
[tex]V2=352 K*\frac{8L}{326 K}[/tex]
V2= 8.64 L
The new volume is 8.64 L.
what is the pH when h+=0.045 M?
Answer:
pH≈1.35
Explanation:
-log(0.045)≈1.35
What percentage of the world's species of plants and animals can be found in the rainforest?
Answer:
50
Explanation: