Answer:
Melting points are often used to characterize organic and inorganic crystalline compounds and to ascertain their purity. Pure substances melt at a sharp, highly-defined temperature (very small temperature range of 0.5 – 1 °C) whereas impure, contaminated substances generally exhibit a large melting interval.
Explanation:
I hoped this helps a bit! ^^
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Answer the question using the equation: HCl(aq)+H2O(l)→H+(aq)+Cl-(aq)+H2O(l)→H3O+(aq)+Cl-(aq) Which product is a Lewis base?
Answer:
Cl-
Explanation:
The equation of the reaction is;
H+(aq)+Cl-(aq)+H2O(l)→H3O+(aq)+Cl-(aq)
Lewis base refers to substances that can donate a lone pair of electrons(e.g OH^-, Cl^- etc) or a pair of nonbonding electrons.(eg NH3, H20 etc). A Lewis base is therefore an electron-pair donor. They are easily recognized because they often have lone pairs or are negatively charged species.
If we look at the products, Cl- is a Lewis base because it is a lone pair donor. We see this more clearly because the specie is negatively charged.
Answer:
Cl
Explanation:
help for brainlist and extra points!!
Answer:
Explanation:
c.
PLEASEEE HELP ITS DUE SOON!
Answer:
The correct answer would be C) Support
3. What is the primary consumer in the following food chain, sun - tomato plant - tomato worm - wasp?
tomato worm
tomato plant
wasp
sun
Answer:
Tomato worm
Explanatio
v
vv
Answer
Tomato Worm
Explanation:
heyyyy this is science I will give you brainliest but u have to show your work
Fun question; Naurto or sauske
Water decomposes into hydrogen and oxygen
Some Nomenclature stuff^
Answer:
This isnt a question
Explanation:
Answer:
this isn’t a question
Explanation:
Not a question
Are plastics made of molecules with
simple structures or extended
structures? Explain.
Answer:
Explanation:
Plastics are made with very complex structures. That's why they turn black when burnt and why most things/bacteria cant break down plastic
What is the highest occupied energy level for an atom of copper (Cu)? *
Answer:
third energy level - 18
hope this helps
A scientist was studying a population of elephants. The first year, he counted a population of 80. Over the next eight
years, the population's numbers were 94, 100, 103, 110, 125, 120, 125, 120. What appears to be the carrying capacity
for this population?
0 120
0124
O 125
O 126
Answer:
The carrying capacity of this population would be 125 we know this because we see that this number occur multiple times and seems to be the tipping point after which the number of the population always go down
Answer:
The carrying capacity of this population would be 125 we know this because we see that this number occur multiple times and seems to be the tipping point after which the number of the population always go down
Explanation:
What role did photographic plates play in the discovery of radioactivity?
When Henri Becquerel investigated the newly discovered X-rays in 1896, it led to studies of how uranium salts are affected by light. By accident, he discovered that uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.
Explanation: Please mark me brainliest :)
I need Help Please !!!!!
Answer:
dang
Explanation:
dang that looks hard man, I wish I could help man but unfortunately I got ran over twice and got a concussion sorry man
Select the correct answer.
How does adding oxygen (O2) to this reaction change the equilibrium?
2SO2(g) + O2(g) ⇌ 2SO3(g)
A.
The equilibrium shifts right to produce more SO3 molecules.
B.
The equilibrium shifts left to produce more O2 molecules.
C.
The equilibrium shifts right because of decreased collisions between SO2 and O2 molecules.
D.
The equilibrium shifts left with an increase in SO2 and O2 molecules.
E.
The equilibrium shifts left because of increased collisions between SO2 and O2 molecules.
Answer:
A. The equilibrium shifts right to produce more SO3 molecules.
Explanation:
In each of the following sets of elements, which one will be least likely to gain or lose electrons?
1. Cesium (Cs), Rubidium (Rb), and Sodium (Na)
2. Barium (Ba), Calcium (Ca), and Beryllium (Be)
3. Fluorine (F), Chlorine (Cl), and Bromine (Br)
4. Tellurium (Te), Oxygen (O), and Sulfur (S)
A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
balanced
rearranged
transferred
beautiful
PLEASE HELP ME what happened to the green trait in mendel's pea plants
Answer:
Mendel's gene involved in pea color decides whether the chlorophyll in the pea will be broken down or degraded. When this gene isn't working, the chlorophyll stays around and the pea is green. So in this case the recessive trait is indeed due to a broken gene.
Explanation:
The green trait in Mendel's pea plants should be involved is considered to be pea color.
Green trait in Mendel's pea plants:Mendel's gene included in pea color that the chlorophyll should be in the pea and the same should be split down or degraded.
Also when the gene should not be working so here chlorophyll should stays around and the pea should be green.
In this case, the recessive trait for indeed because of the broken gene.
Learn more about plants here: https://brainly.com/question/18532463
The students in Mrs. Jamison's class were conducting a lab experiment to determine the if temperature affected how fast 2 drops of food coloring mixed into water. They used frozen water, refrigerated water, room temperature water, and hot water. Which water allowed the food coloring to mix the fastest?
A) Hot water
B) Frozen water
C) Refrigerated water
D) Room temperature water
Answer:
A
Explanation:
Plz help... answer this question!
Answer:
B
Explanation:
Because element is made up of only one type of atoms and figure b show only one type of atoms.
How many moles of each element are in one mole of (NH4)2S? (3 points)
a
1 mole of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
b
1 mole of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
c
2 moles of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
d
2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Answer:
2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Explanation: i took the test and got it right
The number of moles for each element in one mole of (NH₄)₂S are:
d. 2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Identification of number of moles:The number of moles can be identified by dividing the given mass by molar mass.
In one mole of (NH₄)₂S there are moles of each participating element i.e. nitrogen, oxygen, hydrogen, and sulfur.
In this molecule, there are 2 moles of nitrogen, 8 moles of hydrogen, and one mole of sulfur.
Thus, option d is correct.
Find more information about One mole here:
brainly.com/question/1358482
plllllz its 100 and i give brain list
Answer:
Your answer is the on with the clownfish and the anemone
Explanation:
Hope this helps!
Which member of the alkali metals has the highest
electronegativity?
A)Na
B)Cs
C)Fr
D)Rb
E)Li
F)K
Answer:
E)Li
Explanation:
Electronegativity is the tendency of an atom to attract a pair of bonding electrons. In the periodic table, electronegativity increases across the period and decrease down the group.
This means the element at the top of the group would have the highest electronegativity.
The correct option is;
E)Li
Cuban swimmer Cesar Godoy won the gold medal In the 150-meter freestyle swim. He
swam 150 meters In 23 seconds. How fast did he swim on average?
The average speed = 6.52 m/s
Further explanationGiven
distance = 150 m
time = 23 s
Required
The average speed
Solution
The average speed : distance traveled divided by time taken or total distance divided by total elapsed time
Can be formulated :
avg speed = distance : time
avg speed = d : t
Input the value :
avg speed = 150 m : 23 s
avg speed = 6.52 m/s
Mr. Evans rides his bicycle an average speed of 8 km/hr. How far has he
traveled if he rides 4 hours?
Answer:
[tex]\boxed {\boxed {\sf 32 \ kilometers}}[/tex]
Explanation:
Distance is the product of speed and time.
[tex]d=s*t[/tex]
The speed is 8 kilometers per hour and the time is 4 hours.
[tex]s= 8 \ km/hr \\t= 4 \ hr[/tex]
Substitute the values into the formula and multiply. Note that the hours will cancel when multiplied.
[tex]d= 8 \ km/hr * 4 \ hr[/tex]
[tex]d= 32 \ km[/tex]
Mr. Evans traveled 32 kilometers.
Answer:
32 km.
Explanation:
Distance = speed × time
We know that Mr. Evans is riding his bicycle at an average of 8km/hr, or 8 kilometers per hour. He is riding his bike for 4 hours, so we will need to multiply according to the formula.
8 × 4 = 32
The answer to the question is 32 kilometers.
Help please!! I’ll mark you brainliest!!
Answer:
a) should be an answer that is like "matches" or "equals" or "is equal to"
b) should be "conservation of mass"
c) can't be sure because I'd need to see the answer choices, but it should be a properly balanced chemical equation (one with the same number and type of atoms on both sides)
Explanation:
When the wind blows across a body of water, ____ between the water and air causes the water to move. ions gravity friction density
Explain the similarities and differences between putting a beaker of ethanoic acid in the refrigerator and mixing it with sodium carbonate
Answer:
See explanation
Explanation:
When a beaker of ethanoic acid is placed in the refrigerator, its temperature drops and the vessel feels cool.
Now, when we mix ethanoic acid and sodium carbonate, an endothermic reaction occurs, fizzing is observed as carbon dioxide is given off and heat is lost to the surroundings causing the reaction vessel to feel cool to touch.
The difference between putting ethanoic acid in the refrigerator and adding sodium carbonate to the solution is that, in the former, no new substance is formed. The substance remains ethanoic acid when retrieved from the refrigerator. In the later case, new substances are formed. The substance is no more ethanoic acid because a chemical reaction has taken place.
State, in terms of the strength of intermolecular forces, why 12 has a higher boiling point than F2
Answer:
See explanation
Explanation:
The greater the relative atomic mass of an atom the more polarizable the atom is.
Also, the magnitude of dispersion forces depends on the molecular mass of the compound.
We must remember that both I2 and F2 are nonpolar molecules that are purely held together by dispersion forces.
Hence, I2, having the greater molecular mass and surface area experiences a greater magnitude of dispersion forces and consequently has a higher boiling point than F2.
Something used to power some devices.
Answer:
electricity
Explanation:
or maybe food
which pair shares the same empirical formula. c2h2 and c6h6, c2h2 and c2h4, ch2 and c6h6, ch and c2h4
Answer:
Answer: CH₃ and C₂H₆ have same empirical formula.
Explanation:
it just compares in that it its the same
Answer:c2h2 and c6h6,
Explanation:
Convection is the transfer of heat through the rising and sinking of a fluid. A student is constructing an explanation for how convection currents form in the mantle. Which statement would be most useful for the student to include in the explanation?
Answer:
Capilarity: the rise and fall of the convention currents heat in the mantle
Answer:
Earth's temperatures increase with depth.
Explanation:
because i just know
What type of Chemical is Pb?
Answer:
Explanation:
That is the symbol for the element lead