Answers
Answer:
pentene
Explanation:
pentene is 5 carbon chain with a double bond. The ending -ene indicates presence of double bond.
Related Questions
The ____ allows you to compare the elements and understand their properties
Answers
Answer:
Periodic Table
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Explanation:
The periodic table allows you to compare the elements and understand their properties.
What is periodic table?Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.
It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.
Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.
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The speed of a wave is how far the wave travels in one unit of ___.
Answers
Answer:
The speed of a wave is how far the wave travels in one unit of time. (eg: seconds)
Explanation:
For instance, if the crest of a wave travels 30 meters in 2 seconds, the speed of that wave is 15 m/s.
21.) This substance consists of two or more nonmetal elements in a fixed ratio.
a.) element
b.) mixture
c.) molecule
d.) compound
Answers
Answer:
Molecule
Explanation:
when two or more than two non-metal elements are combined then it form Molecule.
From the following equations, which one is an example of a decomposition reaction? *
2Cl + 2Na = 2NaCl
NaCl + Fe = FeCl + Na
2NaCl = 2Na + 2Cl
FeCl + Na = NaCl + Fe
Answers
Answer:
2NaCl = 2Na + 2Cl
Explanation:
Sodium chloride decomposes to form sodium and chlorine
How many elements are in the reaction?
HCL+NaOH ——-> H2O+NaCL
Answers
Chemical A breaks down into chemical B. At t=0, [A] = 0.100 M. At t=10.0 s, [A] = 0.075 M. What is the average reaction rate?
Answers
Answer:
a0.0075 mi i think so ok but average is need to add and divide
Why is it useful to know the background level of extinction?
It is part of the scientific process to observe changes in nature.
If current rates greatly exceed background rates, scientists say there is a chance of a
mass extinction event happening.
NOAA and FWS are required by law to compare background rates to current rates.
Scientists want to see if increased extinction rates will threaten the human population.
Answers
Answer:
NOAA and FWS are required by law to compare background rates to current rates.
Explanation:
Answer:
If current rates greatly exceed background rates, scientists say there is a chance of a mass extinction event happening.
Explanation:
Scientists compare current rates of extinction to the background rate to see if there is a potential problem developing.
I got it right on the quiz.
How do the products of a nuclear fusion reaction differ from reactants?
Answers
Answer:The products of nuclear fusion are by far heavier than the reactants. Nuclear fusion is the combination of small atomic nuclei into larger ones.This reaction is accompanied with the release of a large amount of energy:
²₁H + ²₁H → ⁴₂He + energy
In the above reaction,
two hydrogen atoms fuse and produce a heavier helium atom which differs from the combining atoms.
Explanation:
The concentration of a reactant dropped from 1M to 0.6 Min 15 seconds.
Calculate the reaction rate of this reaction in M/min.
Answers
Answer:
1.6 M/min
Explanation:
Step 1: Given data
Initial concentration of the reactant: 1 MFinal concentration of the reactant: 0.6 MTime elapsed (t): 15 sStep 2: Convert "t" to min
We will use the conversion factor 1 min = 60 s.
15 s × 1 min/60 s = 0.25 min
Step 3: Calculate the reaction rate
We will use the following expression.
r = -ΔC/t
r = -(0.6 M - 1 M)/0.25 min = 1.6 M/min
In the Rutherford nuclear-atom model, ________. Group of answer choices mass is spread essentially uniformly throughout the atom the three principal subatomic particles (protons, neutrons, and electrons) all have essentially the same mass and mass is spread essentially uniformly throughout the atom the heavy subatomic particles, protons and neutrons, reside in the nucleus the light subatomic particles, protons and neutrons, reside in the nucleus the three principal subatomic particles (protons, neutrons, and electrons) all have essentially the same mass
Answers
Answer:
the heavy subatomic particles, protons, and neutrons, reside in the nucleus
Explanation:
The atom is envisioned by Ernest Rutherford as miniature solar system, involving electrons that is orbiting around a very massive nucleus, it is regarded as mostly empty space, having nucleus that occupy small part of the atom. He discovered that atom is regarded as mostly empty space, having a mass concentrated central nucleus. This nucleus is charged positively and it is been surrounded by electron which is negatively charged t
Large distance. In In the Rutherford nuclear-atom model,the heavy subatomic particles, protons, and neutrons, reside in the nucleus
The pollen grains move in water randomly because of
A. The collisions
between water particles and pollen grains
B. they dissolve in water
C. the gravit
Answers
A gas' pressure is 850 torr at 47 degrees. At what temperature will the pressure be 655 torr?
Answers
Answer:
From Pressure Law
P1/T1 = P2/T2
Changing our temp to kelvin
T1 = 47 +273 = 320K
We're looking for T2
Making T2 the subject
T2 =P2 x T1 / P1
= 655 x 320/850
T2 = 246K
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Two buildings are 21m apart. The height of the taller building is 207m. The angle of depression from the top of the taller building to the top of the shorter building is 15°. Find the height of the shorter building to the nearest meter. (please try to include diagram)
Answers
Answer:
dfgdhfjkl;jhgfdsAZXcvdfcgbwegbfgvdavsbhgsvadrfgvrdt
Explanation:
Sam is visiting the desert. He is standing beside a cactus watching a
snake move across the sand. There is a lizard basking in the sun on a rock
nearby. Which of the following correctly identifies the biotic and abiotic
parts of the ecosystem?
Abiotic: Rock, Sand, Sun Biotic: Cactus, Lizard, Sam, Snake
Abiotic: Cactus, Rock, Sam Biotic: Lizard, Sand, Snake, Sun
Abiotic: Cactus, Rock, Sand, Sun Biotic: Lizard, Sam, Snake
Abiotic: Cactus, Lizard, Sam, Snake Biotic: Rock, Sand, Sun
Answers
Answer:
A
Explanation:
Rock sand sun arent living. cactus lizard sam and snake are living or biotic
How many moles of sulfur S, will react with six moles of aluminum?
Answers
Answer:
9 moles of Sulphur will react with 6moles of Aluminum
A pan containing 20.0 grams of water was allowed to cool from a temperature of 95.0 °C. If the amount of heat released is 1,200 joules, what is the approximate final temperature of the water? (5 points)
75 °C
78 °C
81 °C
87 °C
Answers
Answer:
78° C.
Explanation:
The final temperature of water is 81℃ , if it is allowed to cool from a temperature of 95 and it releases heat of 1200J.
What is the final temperature of water?In the following question we will apply specific heat Capacity equation
q=mct Δt
q= 1200J m= 20 g c= 4.186 T₁= 95 ℃
1200= 20 ✕4.186(95-T₂)
T₂=81℃
Hence, The water cools to 81℃ temperature
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plz help me solve this question is it A,B,C or D
Answers
Hydrochloric acid reacts with sodium hydroxide to form sodium chloride (the salt) and water. Sodium chloride is made up of Na+ cations from the base (NaOH) and Cl- anions from the acid (HCl). HCl+NaOH→H2O+NaCl.
What is hydrogen plus hydrogen
Answers
Answer: Proton
Explanation:
hydrogen ion is the basis of the pH scale. H:– = Hydride. Hydride is a hydrogen atom which has an extra electron.
Which of the following MOST LIKELY causes the rate of a chemical reaction to increase?
Decreasing the reaction temperature
Grinding up a solid reactant
Adding an inhibitor
Using a larger container
Answers
Explanation:
Reactant concentration.
Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.
Pls I need help with these I have a test in 1 hour
Answers
Answer:
option e
hope helps u
have a nice day
30.) What charge would you expect from a Group 16 atom when it becomes an ion?
a.) 1-
b.) 2+
c.) 1+
d.) 2-
Answers
Explanation: atoms of group 16 gain two electrons and form ions with a 2− charge
A gas has an initial pressure of 120 kPa, a volume of 23 liters, and a temperature of 20°C. If the pressure is raised to 150 kPa the new volume is 17 liters, what is the new temperature of the gas? *
A.100 K
B.0.003 K
C.270.7 K
D.18.4 K
Answers
Name the compound containing only fluorine and hydrogen.
The answer is Hydrogen fluoride. Why does hydrogen come first?
Answers
How many grams of caffeine should we prepare in a 10 mL standard of 3 mm
a) 0.05 grams
b) 2.57 grams
c) 0.00583 grams
d) 5 grams
PLEASE HELP!
Answers
Answer:
if it is espresso(1 shot), the coffee content to be considered is: (77/44)*(10/3)= 5.833= 0.005833 grams
Explanation:
ASAP:
The gases in a can of compressed air are at a temperature of 274.9 K and a pressure of 227.2 kPa. If the gases in the can reach a pressure of 845.3 kPa, the can will explode. What temperature (in K) would the can need to be heated up to for it to explode?
Answers
Answer:
845.4
Explanation:
An isotope undergoes radioactive decay. The new isotope that forms has an atomic number that is 2 less than the original isotope’s.
Which kind of decay has occurred, and how do you know?
1)alpha decay because alpha particles have a large mass
2)beta decay because beta particles can have negative charge
3)alpha decay because alpha particles have two protons and two neutrons
4)gamma decay because gamma rays are photons
Answers
Answer:
3)alpha decay because alpha particles have two protons and two neutrons
Explanation:
When a radioactive isotope undergoes a decay, a daughter nucleus or nuclei is/are formed. The mass number and atomic number of the daughter nucleus gives us an idea of the nature of radioactive decay that the parent nucleus underwent.
If the daughter mass number of the daughter nucleus is four units less than that of the parent nucleus and the atomic number of the daughter nucleus is two units less than that of the parent, then such a decay is an alpha decay.
An alpha particle has two protons and two neutrons thus it has a mass number of 4 and an atomic number of two.
How does the electron-cloud model describe electrons?
The exact position of an electron can be known.
An electron can be found at certain distances from the nucleus.
An electron has a high probability of being in certain regions.
Each electron follows a specific path around the nucleus.
Answers
Answer:
C. An electron has a high probability of being in certain regions.
Explanation:
In the electron cloud model, there are no electron-orbits around the nucleus but a cloud. This cloud has various densities with respect to distance from the nucleus. The most dense region of the cloud (which is the region close to the nucleus) is where electrons has the highest probability of existence.
The model explains that an electron a greater chance of being in the region closer to the nucleus. Thus, an electron has a high probability of being in certain region of the cloud about the central nucleus. And an electrostatic force exists between the nucleus and the electrons.
Answer:
c
Explanation:
Balance the following equation:
Cr + __02 +_Cr203
Answers
Answer:
4Cr + __302 -->_2Cr203.....
Describe wildfires. How is climate change impacting wildfires ?
Answers
Answer:
Hey mate.......
Explanation:
This is ur answer......
Climate change has been a key factor in increasing the risk and extent of wildfires in the Western United States. Research shows that changes in climate create warmer, drier conditions. Increased drought, and a longer fire season are boosting these increases in wildfire risk. But global warming has changed some of the underlying variables that make wildfires more or less likely to occur every year. Warmer temperatures increase the likelihood that fires will burn more intensely. They also cause snow to melt sooner, and lead to drier soils, forests, and plants, which act as kindling.
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I have to do this for homework please help :)
Answers
Answer:
1..... nucleus
2......electron cloud
3.......protons
4........Neutrons
5..........electron
6............electrons
7...............Isotopes
8.....,...........ions
9....................charge