Answer:
Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup." Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.
how did Alexander dye ?
Answer:
After surviving battle after fierce battle, Alexander the Great died in June 323 B.C. at age 32. Some historians say Alexander died of malaria or other natural causes; others believe he was poisoned. Either way, he never named a successor.
Answer:
After surviving battle after fierce battle, Alexander the Great died in June 323 B.C. at age 32. Some historians say Alexander died of malaria or other natural causes; others believe he was poisoned. Either way, he never named a successor
Explanation:
hope it helps
What do you think will happen to the Sun when all the hydrogen in it fuses to become helium?
Answer: In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.
Why are ionic compounds not considered to be molecules?
Answer:
No, ionic compounds are crystals of infinite cations and anions bound together. There is no “molecule” of ionic compounds such as, for example, NaCl, because there are no single units of the compound.
Explanation:
Ionic compounds are not considered to be molecules because they do not consist of discrete, covalently bonded units like molecules.
In ionic compounds, the bonding occurs through the transfer of electrons from one atom to another, resulting in the formation of ions. These ions are held together by strong electrostatic attractions, known as ionic bonds.
Unlike molecules, which are formed by the sharing of electrons in covalent bonds, ionic compounds do not have individual units with fixed numbers of atoms. Instead, they exist as a three-dimensional lattice structure composed of alternating positive and negative ions. The ions are arranged in a repeating pattern throughout the crystal lattice.
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100 POINTS PLEASE HELP
1. What is the molar mass of NaOH?
2.How many atoms are in 3.35 moles of Aluminum?
3.How many moles of CO2 gas are in a 101.25 L container filled with CO2 gas?
4.What is the mass of 13.7 moles of N2 gas?
5.How many moles are in 78.5 molecules of CaCO3?
Answer:
1. 39.997 g/mol
2. 6.022⋅1023 atoms of aluminium
3. 0.026 moles
4. 14 grams is the molar mass of nitrogen meaning that one mole of nitrogen atoms is 14 grams. One mole of any substance has 6.02*10^23 atoms/molecules of that subtance therefore there are 6.02*10^23 atoms of nitrogen in 14g of nitrogen
5. 78.5
Explanation:
When heat is being transferred away from a substance, the resulting phase change graph is known as a ____ curve.
a. Cooling
B. Heating
2 WHAT ARE THE THREE THINGS NECESSARY TO MAINTAIN A FIRE?
Answer:
Oxygen, heat, and fuel
Explanation:
Oxygen, heat, and fuel are frequently referred to as the "fire triangle." Add in the fourth element, the chemical reaction, and you actually have a fire "tetrahedron." The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
What was boyle’s most famous discovery about gases?
Answer:
Boyle's most famous discovery had to do with how the pressure and volume of gases relate, either this or he discovered the volume of a gas decreases with increasing pressure...
Explanation:
...
Which statement concerning simple sugars and amino acids is correct
Answer:
Is there be suppose a file with this?
Explanation:
5 grams of sodium bicarbonate, a white powdery solid, is placed in an empty red balloon. 100 grams of acetic acid, a clear aqueous solution, is placed in the plastic bottle. The balloon is carefully attached to the bottle so that no air can get in or out and the powder does not fall into the bottle. Once attached, the apparatus is placed on a balance and the contents are mixed. Bubbles form, the balloon inflated, and the white powder is no longer visible. Which of the these statements would match your observations? A) A chemical reaction has occurred and the mass will increase. B) A chemical reaction has occurred and the mass will decrease. C) A physical reaction has occurred and the mass will decrease. D) A chemical reaction has occurred and the mass will remain the same.
Answer: im pretty sure its D
Explanation:
carbon dioxide fire extinguishers are designed for which types of fuels
Answer:
Carbon Dioxide is a non-flammable gas that extinguishes fire by displacing oxygen
CO2s are designed for Class B and C (flammable liquid and electrical) fires only.
Identify the limiting reactant when 9.65-g H2SO4 reacts with 6.10-g of NaOH.
Answer:
3.56
Explanation:
for the reaction, Pb(no3)2 + 2kI yields pbi 2 + 2 kno3, how many moles of lead iodine are produced from 300 g of potassium iodine
a. Write thepossible isomers of C4 HgBr4
The four isomers of C4H9OH are
As refer to IMAGE 01- Butan−1−ol
As refer to IMAGE 02- Butan−2−ol
As refer to IMAGE 03- 2−methylpropan−2−ol
As refer to IMAGE 04- 2−methylpropan−1−ol
solution
https://www.toppr.com/ask/en-gb/question/write-down-all-isomers-of-c4-h9oh/
preventive maintenance on a hot water heater includes:
A water heater can be regularly maintained by flushing it at least two times in a year.
A water heater is a device that is used to heat up water for home use. There are different types of water heaters but they all serve the same purpose at home. In order to maintain maximum efficiency, the water heater must be maintained regularly.
The following are routine maintenance operations on a water heater;
Inspect the heater regularly to ascertain if there are faults.Flush the heater at least two times each year.The anode rod should be changed after a couple of yearsLearn more about water heater;https://brainly.com/question/4751630
Read the following chemical equations.
Reaction 1: 2KI + H2O2 2KOH + 12
Reaction 2: Cl2 + H2 → 2HCI
Which of the following statements is true for both the chemical equations?
A. I is oxidized in reaction 1 and Cl2 is oxidized in reaction 2.
B. I is reduced in reaction 1 and Cl2 is reduced in reaction 2.
C. I is oxidized in reaction 1 and Cl2 is reduced in reaction 2.
D. I is reduced in reaction 1 and Cl2 is oxidized in reaction 2.
This problem is providing two reduction-oxidation (redox) reactions in which the oxidized and reduced species can be identified by firstly setting the oxidation number of each element:
Reaction 1: 2K⁺I⁻ + H₂⁺O₂⁻ ⇒2K⁺O⁻²H⁺ + I₂⁰
Reaction 2: Cl₂⁰ + H₂⁰ ⇒ 2H⁺CI⁻
Next, we can see that iodine is being oxidized and oxygen reduced in reaction #1 and chlorine is being reduced and hydrogen oxidized in reaction #2 because the oxidized species increase the oxidation number whereas the reduced ones decrease it.
In such a way, the correct choice is C.
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(Redox reactions) https://brainly.com/question/13978139Which of the following would
9 indicate a new substance has
been formed?
Bubbling and fizzing
occur.
Powder dissolves in
an unknown liquid
A beaker of
hydrochloric acid
evaporates after
several days
Solid iron is melted to
a liquid
Color YELLOW
Color ORANGE
Color PINK
Which one?
Answer:
Bubbling and fizzing are likely to occur when a new substance is formed. The other examples are simply changing to a different form of the same substance.
NO LINKS!!!
Help . . .
Where is the magnetic field strongest?
A. closest to the wire
B. Farthest from the wire
Answer:
In general, the magnetic field is strongest close to the wire and weaker farther away. In fact, the magnetic field weakens as 1/r1/r where rr is the distance from the wire. This can change a bit depending on the length and shape of the wire. Far enough away, the magnetic field decays as 1/r21/r2 .
Answer:
Closest to the wire
Explanation:
In general, the magnetic field is strongest close to the wire and weaker farther away. In fact, the magnetic field weakens as where is the distance from the wire. This can change a bit depending on the length and shape of the wire.
someone pls help me explain this question
Question:
Temperature is a measure of how hot or cold something is.
Do you agree or disagree?
I need explanation I know its agree I just need to explain.
Answer:
yes agree. I is describing a feeling/ reaction to an action I hope this helps!:)
Sources of error in colorimetry?
HELP WILL MARK BRAINLIEST
If an electrically charged plastic bag is placed close to an uncharged cloth, what will happen?
The charge of the bag will change.
The charge of the cloth will change.
The plastic bag will attract the cloth.
The plastic bag will repel the cloth.
Answer:the plastic bag will attract the cloth
Explanation:
Answer:
c
Explanation:
hope this helps
Copper has a density of 8.96 g/cm^3. What is the mass of a piece of copper with a volume of 2.62 cm^3?
Answer:
23.48
Explanation:
Good Luck!
Answer: 23.48 g
Explanation:
formula: mass = density x volume
Volume of copper = 2.62 cm^3
Density of copper = 8.96 g/cm^3
mass = 8.96 x 2.62 = 23.4752
La superficie del sol se encuentra una temperatura de 6000 °C mientras que su núcleo tiene aproximadamente 10,000,000°C.
¿En qué parte del sol las partículas tendrán mayor velocidad?
¿Como será la velocidad de estas partículas comparada con las que están en una limonada a 5 °C?
¿que forma energía está relacionada con la velocidad en las partículas?
AYUDAAAA LO NECESITO YA
La energía cinética está relacionada con la velocidad de las partículas.
Sabemos que la velocidad de las moléculas de gas depende de la temperatura del cuerpo. La temperatura de un cuerpo es una medida de la energía cinética promedio de las moléculas del cuerpo.
Debemos notar que cuanto mayor es la temperatura del cuerpo, mayor es la velocidad de sus moléculas. Por lo tanto, a una temperatura de 10,000,000 ° C, las moléculas en el núcleo del sol tienen una velocidad mayor que las moléculas en la superficie del sol.
Todas las moléculas, ya sea en el núcleo o en la superficie del sol, se mueven a mayor velocidad que las moléculas de la limonada a una temperatura mucho más baja. La energía cinética está relacionada con la velocidad de las partículas.
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What is the mass number (A) of an atom that has an atomic number (Z=26) with 29 neutrons and 26 electrons?
Answer:
A = 55
Explanation:
The atomic number is the number of protons also = the number of electrons, so basically we have 29 neutrons, 26 electrons and 26 protons. Anyway, it's asking the mass number which is the neutrons + the protons, so you just take 29+26 = 55
Atomic number=26
Neutrons=29
Electrons=26
Mass number=Proton+neutron
Protons=26
Mass number=26+29
=55
how does the value of g on the earth is related to the mass of the earth and its radius drive it
The relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is [tex]g = \frac{GM}{R^2} [/tex].
What is weight of an object?
The weight of an object is determined as the product of the object's mass and acceleration due to gravity.
F = mg
The gravitational force on objects in the universeThe gravitational force between two objects in the universe is directly proportional to the product of mass of the objects and inversely proportional to the square of the distance between the objects.
[tex]F = \frac{GmM}{R^2} [/tex]
[tex]mg = \frac{GmM}{R^2} \\\\ g = \frac{GM}{R^2} [/tex]
where;
M is the mass of the earth
R is the radius of the earth
Thus, the relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is [tex]g = \frac{GM}{R^2} [/tex].
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100 POINTS PLZZ HELPP
draw the correct structural formula for the following molecules
Answer:
I cant see the questions can u do a picture zoomed in, thanks :)
Explanation:
PLS HELP
Answer this question and I will mark you the braninliest! <3
Answer:
the left one
Explanation:
heavier means it goes faster
Two students are exploring a creek in their neighborhood.
The students hope to find some fossils along the way. What kinds of rocks should the students look for on their hike, and why should they look for those kinds of rock?
how many molecules of atp are produced as a result of glycolysis
Answer:
2 ATP molecules are produced
Answer:
2 ATP molecules of ATP are produced
Describe what a reversible reaction is.
A reversible reaction is a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously.
[tex] \large \sf \pink{hopefully ♡♡}[/tex]
The more impressive the tail of a male peacock, the higher its chances of finding a mate. Female peacocks choose mates based on the color of the feathers and the overall physical prowess of the animal. However, a genetic mutation called leucism can produce a peacock with only white feathers. This mutation causes the inability of pigment to be deposited into their feathers which results in a white appearance. What would you infer to be the fitness of the white peacock? Choose ALL that apply.
A) The females will equally choose the brightly colored and white peacocks as mates.
B) White peacocks are highly prized, thought to symbolize purity, eternity, and unconditional love, making them desirable mates.
C) If females choose the brightest males as partners, the ones without the impressive tails will be less likely to mate and reproduce.
D) White peacocks are highly prized, thought to symbolize purity, eternity, and unconditional love, causing them to be selectively bred for their unique trait.
E) The peacocks with colored tails will be picked over the white peacocks as mates, causing the peacocks with the white mutation to die out of the population over time
Leucism is a genetic mutation caused by an alteration of a nucleotide. The less brightly colored tails of the peacock will have less chance to mate.
What is selection?Selection is the natural process in which the organism with better trait quality is preferred and selected over another species. They are fit to survive in an altered condition.
The genetic mutation can lead to speciation and selection of the fittest organisms. The type of behavior selection results in the preference of the partners based on the mating and reproducing capabilities.
Therefore, option C. the peacock without impressive tails will be less likely to mate and reproduce.
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