Answer:
The electronegativity of fluorine compare to the electronegativity of oxygen and chlorine as below
Explanation:
Fluorine has the highest electronegativity than oxygen, and chlorine.
Explanation
Generally the electronegativity increase across the period ( from the left to the right) and decreases down the group.
Both oxygen and fluorine are in period 2 in periodic table. since fluorine is on fur right side as compared to oxygen , fluorine has higher electronegativity than oxygen.
On the other side Fluorine and chlorine are in the same group in periodic table. fluorine is at the top of the group while chlorine is at the bottom therefore fluorine has higher electronegativity than chlorine.
In order to become a chemically stable ion, a neutral atom of sodium will _______.
A. lose one electron
B. lose two electrons
C. gain two electrons
D. gain one electron
Answer:
D. gain one electron
Explanation:
In order to become a chemically stable ion, a neutral atom of sodium will gain one electron. Therefore, the correct option is option D.
What is chemical stability?Chemical stability in chemistry refers to a chemical system's thermodynamic stability. When a system reaches its lowest energy state or in thermodynamic equilibrium with its surroundings, thermodynamic stability occurs.
It could be a spontaneous process when the total number of atoms or molecules in a given shape is conserved despite the fact that individual particles or atoms change forms. In order to become a chemically stable ion, a neutral atom of sodium will gain one electron.
Therefore, the correct option is option D.
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What is the net ionic equation for this reaction?
FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl
Answer:
2.6299
its easy
are soft pretzels, (like the auntie annes ones you get at the mall) made through the process of convection, conduction or radiation? thank youuu so much if you can answer ur the best
Answer:
I believe it's radiation, but please correct me if I'm wrong.
Explanation: Have a good day !
What is the charge on an electron?
-1
0
+1
+2
Answer:
he charge on an electron is -1. Explanation : Electron is a subatomic particle whose symbol is . The electrical charge on an electron is negative. The electron was discovered by the J.J. Thomson. The mass of an electron is . The charge on electron and proton is equal but opposite. Neutron has zero charge and proton has +1 charge.
Explanation:
What is the different things that we have and animals?
Answer:
the different things that we have and animals are.:
to gain emotional support.it acts as a real friend.for meat,flesh,milk and milk products, wool,etc.for transportation like horseto enjoy and play like with dolphinsWhich of these is NOT found in the earths crust?
Oxygen
Iron
Sulphur
Helium
Explanation:
helium
Helium gas is not found in earth crust
A prokaryotic cell does not have
А
a cell membrane.
B
genetic material.
C
a nucleus.
D
flagella.
Answer:
D
Explanation:
A skateboarder coasts a distance of 20 meters in 4 seconds. What is the person's speed?
Answer:
5
Explanation:
20/4
Balance the folowing equation.
S + 02
ws
SO:
Answer:
s+o2=so2
Explanation:
i hope it will help u
10.Give an example of an adaptation in birds, where shape of beak is related to the eating habits of that bird.
Answer:
It isn't only for the eating habits but also for building nests, hunting small insects, birds, other creatures including defence. Birds have a narrow small throat so the beak helps ripping off small peices of a big animal l(small bird) and for insects they crush and swallow it, they se their beak for feeding their children by grinding food in their beak and transferring it to the youngsters mouth
What is the noble gas configuration for zirconium?
Answer:
[Kr] 4d² 5s² option b will be correct answer
What’s the answer for this question
Answer:
i think it's B
Explanation:
What is the half-life of Technetium-99 if a 200 gram sample decays to 50 grams in 639,000 years?
Answer:
The half-life of Th-232 is 1.4 ∙ 10¹⁰ years.
1. Which of the following statements is true about seeds?
a. Every plant produces seeds.
c. All seeds are good to eat.
b. All fruits contain many of seeds. d. all seeds has young plant, stored food and a seed coat.
2. Flowers cannot usually produce seeds unless
a. they are visited by insects.
c. they produce nectar.
b. they are on plants growing in good soil. d. the right pollen is placed on their stigmas.
3. Fertilization take place before a seed develops. Which statement describes when fertilization
occurs?
a pollen grain falls on a pistil
c. sperm in a pollen joins with an egg cell in an ovule
b. a pollen tube enters an ovary
d. an ovary becomes a fruit
4. Which of the following is NOT a factor needed by plants?
a. fire
b. nutrients
Please pasagot po ng tanong ko please
c. sunlight
d. water
5. Which is the reproduction in plants where the male and female parts of the flower are involved?
a. asexual
b. sexual
c. rhizome
d. pollination
Answer:
1 ans: d. all seeds has young plant, stored food and a seed coat.
2 ans: d. the right pollen is placed on their stigmas
3 ans: a. pollen grain falls on a pistil
4 ans: a. fire
5 ans: b. sexual
Hope it helps,
Please mark me as brainliest
Thank you...
1.
Archaeologists have discovered the legendary Golden Igloo of the Pribiloff Islands, a structure consisting of a
halfspherical shell with an inner diameter of 1.25 m and an out diameter of 1.45 m. What is the value of this antiquity,
given that gold currently sells for $1,263/ounce and has a density of 19.3 g/cm3? (Note that 1 ounce = 31.1034768 g)
Answer:
The value of the Golden Igloo is $227.4 million.
Explanation:
First, we need to find the inner and the outer volume of the half-spherical shell:
[tex] V_{i} = \frac{1}{2}*\frac{4}{3}\pi r_{i}^{3} [/tex]
[tex] V_{o} = \frac{1}{2}*\frac{4}{3}\pi r_{o}^{3} [/tex]
The total volume is given by:
[tex] V_{T} = V_{o} - V_{i} [/tex]
Where:
[tex] V_{i} [/tex]: is the inner volume
[tex]r_{i}[/tex]: is the inner radius = 1.25/2 = 0.625 m
[tex] V_{o} [/tex]: is the outer volume
[tex]r_{o}[/tex]: is the outer radius = 1.45/2 = 0.725 m
Then, the total volume of the Igloo is:
[tex] V_{T} = \frac{2}{3}\pi r_{o}^{3} - \frac{2}{3}\pi r_{i}^{3} = \frac{2}{3}\pi [(0.725 m)^{3} - (0.625 m)^{3}] = 0.29 m^{3} [/tex]
Now, by using the density we can find the mass of the Igloo:
[tex] m = 19.3 \frac{g}{cm^{3}}*0.29 m^{3}*\frac{(100 cm)^{3}}{1 m^{3}} = 5.60 \cdot 10^{6} g [/tex]
Finally, the value (V) of the antiquity is:
[tex] V = \frac{\$ 1263}{oz}*5.60 \cdot 10^{6} g*\frac{1 oz}{31.1034768 g} = \$ 227.4 \cdot 10^{6} [/tex]
Therefore, the value of the Golden Igloo is $227.4 million.
I hope it helps you!
What experiment did J. J. Thomson do?
A. He sent a cathode ray between electrically charged metal plates.
B. He suspended charged oil drops in a chamber.
C. He hit metal plates with light.
D. He shot alpha particles through gold foil
Answer:
A. He sent a cathode ray between electrically charged metal plates
23) What is the chemical formula for carbon dioxide?
A CO2
B C2O
C CO2
D 2CO
The empirical formulae of a compound is CH2O. The relative formula mass for the molecular formula is 180. What is the molecular formula?
Answer:
ch20 is the empirical formula for glucose , c6h1206 is the molecular formula .
Two different gases are stored inseparate closed containers. If both gases have a temperature of 50°C, which
statement is true?
Answer:
Explanation:
there should be more showing than telling
The reaction represented by this graph is an exothermic reaction. According to the graph, which statement is true? Reactants have more energy than products. Products have more energy than reactants. Reactants and products have the same amount of energy.
Answer:
Reactants have more energy than products
Explanation:
Generally, in an exothermic reaction heat is released. In other words, energy is released. So you start with reactants which have a set amount of stored chemical energy, and you lose some in the reaction. Since energy is 'leaving', the stored chemical energy in the products is less than what we started with in the reactants. When given a graph, you can tell this is true because going from left to right, the line representing the stored chemical energy will start at a higher level than where it ends.
The true statement about an exothermic reaction is that reactants have more energy than products.
What is an exothermic reaction?An exothermic reaction is one in which the energy of reactants is greater than that of products. As such, energy is given off during the reaction in form of heat.
Thus, the true statement about an exothermic reaction is that reactants have more energy than products.
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Balance the following equation:
Sg + F2 --> SF
Answer:
S+ F2 ⇒ SF
S=1
F =2
So S +F2 ......... 2SF
2S + F2 ..........2SF this is a balance equation
S=2 F=2 in left side s=2 F = 2 in rightside
Explanation:⇆
⇒
What are gravitational forces?
Answer:
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects
The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe!
Gravitational force is the force that attracts to objects with mass. ... This forces tries to pull masses together, that is why attractive in nature. For example: When ball is thrown upwards it always come downwards after a certain height because the ball is pulled or attracted by the Earth's gravitation la force.
¯\_(ツ)_/¯
Answer:
Good Question!!! No one has found the answer to that question.
Explanation:
Which describes the molecule shown below?
O A. Unsaturated alkyne
O B. Saturated alkane
O C. Saturated alkene
O D. Unsaturated alkane
The description of the molecules shown is it is unsaturated alkynes. The correct option is A.
What are unsaturated alkynes?Alkynes are unsaturated double bond containing compound that react with hydrogen when a catalyst is present.
The pie bond shows that the hydrogen atoms are lost from the alkanes.
Thus, the correct option is A, unsaturated alkynes.
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20 points to whoever can answer these 3 questions correctly
Answer:
1) A. NO
2) B. 4
3) D. 8
Explanation:
Which is the last element in the periodic table?
Answer:
Oganesson!
It is a synthetic chemical element with the symbol Og and atomic number 118. It was first synthesized in 2002 at the Joint Institute for Nuclear Research in Dubna, near Moscow, Russia, by a joint team of Russian and American scientists.
Answer:
the last element is ogasnesson
please help quick the 6th question is “What is a catalyst?” (include all three parts)
Which of the following might be included in a chemical
reaction?
a
Molecules
blons
Pure elements
d
All of the above
Answer:
b) ions
Explanation:
Answer: all of the above
Explanation:
Which electromagnetic wave has the longest
wavelength? Describe the energy level and
frequency of this wave.
Answer:
radio waves
Explanation:
which has the longest wavelength and lowest frequency and energy. Ultraviolet light (UV) is divided into three regions: UV A, wavelength = 400 - 320 nm UV B, wavelength = 320 - 280 nm
I gotta pick 4 last question to pass :,) pls help:>
whoever answers first will be marked brainliest unu
Answer:
Explanation:
heat up the solvent
increse the pressurre of the mixture
add more solute
agitate
Why aren't acid-base reactions considered redox reactions, even though they involve the transfer of hydrogen atoms?
Answer: Acid/base and precipitation reactions almost always are NOT redox reactions. For redox to have happened, the number of electrons that an element has must change (i.e. its oxidation state must change). ... But the hydrogen ion never "has" any electron throughout the process and remains in a +1 oxidation state.
Explanation:
let me know if that helped...(☞ﾟヮﾟ)☞
Acid-base reaction is not a redox reaction, since the oxidation number remains unchanged in acid-base reaction.
What is acid-base reaction?An acid-base reaction is the chemical reaction that occur when acids and bases react together.
What is redox reaction?Redox reaction is a reaction that involves the transfer of electrons between the atoms, ions, or molecules.
Acid-base reactions involve the transfer of hydrogen ions between reactants. Redox reactions involve a change in oxidation number for one or more reactant elements.
Redox reactions involve a change in oxidation number for one or more reactant elements.
Acid-base reactions involve a transfer of a hydrogen ion instead of an electron and the transfer of an H+ ion leaves the oxidation numbers unaffected.
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