Helppppppppppppppppppppppp

Helppppppppppppppppppppppp

Answers

Answer 1
Answer : c - stable atom
Answer 2

Answer:

B. Periodic electrons


Related Questions

Which process occurs during transpiration?

A.
During transpiration, water vapor precipitates from plants.

B.
During transpiration, water vapor evaporates from plants.

C.
During transpiration, water vapor condensates from plants.

D.
During transpiration, water vapor collects from plants.

E.
During transpiration, water vapor is absorbed by plants.

Answers

Answer:

It should be B

Explanation:

because I just searched it up if I'm wrong I'm wrong

Answer:transpiration just took the test

Explanation:

100%

Can someone help me out with the question

Answers

6cheese 9hotdogs
5cookies 30pickles


Which two formulas are used to calculate potential and kinetic energy?

Answers

For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters. Notice that gravitational potential energy has the same units as kinetic energy, kg m2 / s2!

Answer:

[tex]\boxed{\bold { \large { \boxed {KE=\frac{1}{2} mv^2 \ , \ PE=mgh}}}}[/tex]

Explanation:

Kinetic energy formula

[tex]\displaystyle KE=\frac{1}{2} mv^2[/tex]

Potential energy formula

[tex]\displaystyle PE=mgh[/tex]

[tex]\displaystyle KE \Rightarrow \sf kinetic \ energy \ (J)[/tex]

[tex]\displaystyle PE \Rightarrow \sf potential \ energy \ (J)[/tex]

[tex]\displaystyle m \Rightarrow \sf mass \ (kg)[/tex]

[tex]\displaystyle v \Rightarrow \sf velocity \ (m/s)[/tex]

[tex]\displaystyle g \Rightarrow \sf acceleration \ of \ gravity\ (m/s^2)[/tex]

[tex]\displaystyle h \Rightarrow \sf height \ (m)[/tex]

What happens as elevation increases?

Answers

Answer:

As altitude increases, the amount of gas molecules in the air decreases the air becomes less dense than air nearer to sea level.

Explanation:

What causes radiation?

Answers

Answer:

It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects

In a graph, what effect would adding a catalyst have on D?

A. It would decrease.
B. It would increase.
C. It would stay the same.
D. You cannot tell from this graph.

Answers

It would decrease hope this helps

Answer:

C. It would stay the same

Explanation:

PLATO answer

Which has a greater volume, 100mL of alcohol or 100mL of water? Prove your answer.

Answers

Answer water

Explanation:

What are the 3 types of chemical reactions?

Answers

Answer:

Synthesis reactions. Decomposition reactions. Combustion reactions.

Explanation:

Synthesis reactions. - Two or more reactants combine to make 1 new product

Decomposition reactions. - A single reactant breaks down to form 2 or more products.

Combustion reactions. - A single element or compound combines with oxygen gas releasing energy. This rapid oxidation is called burning.

Can someone please help me with this question?

Answers

es 3l por 0/0 (1234008×556098

HELP PLS ILL GIVE BRAINLIEST AND 40 POINTS!!!

According to the information in the table, what comparison can Molly make about the densities of sugar and corn starch?

Density is mass divided by volume (D = M/V)

Select one:
A. Corn starch is more dense than sugar.
B. Sugar is more dense than corn starch.
C. Sugar is more dense than baking soda.
D. Both sugar and corn starch are more dense than salt.

Answers

Answer:

A.? I think it is A hope it helps

How many significant figures are there in 8.280?

Answers

There are three significant figures

Answer:

number of significant figures-4

number of decimals-3

☆ Electrons are much more unpredicable
the what bour said

Answers

Answer:

this is very true

Explanation:

En la ecuación: Fe2O3 + CO = Fe + CO2.

El agente reductor es:


a)oxido ferrico

b)dióxido de carbono

c)monóxido de carbono

d)hierro​

Answers

Answer:

English please

Explanation:

Kinetic energy is energy stored in an object due to its position.
True
Or
False

Answers

The answer is false.

Answer:

[tex]\boxed {\boxed {\sf False}}[/tex]

Explanation:

Kinetic energy is the energy of movement or energy at work. An example is a ball rolling down a hill.

Potential energy is stored energy due to the position of an object. For example, a ball resting at the top of a hill.

The question incorrectly described potential energy as kinetic energy. Therefore, the answer is false.

Do you think genetic engineering is ethical? Explain why or why not.

Answers

Answer:

Yes

Explanation:

One of the top goals of genetic engineering is the improvement of health. Imagine a world without the threat of AIDS or cancer. Those working in the genetics field hope that manipulating the genes of humans will one day enable science to prevent people from contracting these potentially deadly diseases.

What is a membrane?
A: Another term for a cells nucleus

B: a sort of “skin that encloses something

C: A type of genetic material

D: A single-called organism

Answers

B I think, it has layers that protects the cells nucleus


When Copper metal is exposed to Oxygen gas, solid copper (11) oxide forms on the surface.
What is the formula for the following compound: Copper

Answers

Answer:

jjsydydbbeyxgxhx

Explanation:

nnhejjej

How do most animals produce offspring

Answers

Answer:

Some animals produce offspring through asexual reproduction while other animals produce offspring through sexual reproduction. Both methods have advantages and disadvantages. Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent.

Explanation:

Choose the correct statement.


A) Anions gain electrons having a charge of positive.

B) Cations lose electrons having a charge of positive

C)Cations lose electrons having a charge of negative.

D)Anions gain electrons having a charge of neutral.

Answers

Answer:

B) Cations lose electrons having a charge of positive.

Explanation:

Hello there!

In this case, it is widely known that ions are classified as positive cations and negative anions, since the former is produced when a metal loses electrons and the latter when a nonmetal gains electrons; in such a way, the correct choice is:

B) Cations lose electrons having a charge of positive.

Best regards!

Answer:

Either B or A

Explanation:

The other answer said B, and I said either B or A, so anyone who is currently cheating on a chemistry test, try B

I need help ASAP pls the last question

Answers

Answer:When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed. ... The particles exert more force on the interior volume of the container. This force is called pressure.

Explanation:

A compound decomposes by a first-order process. If 36 %% of the compound decomposes in 60 minutes, the half-life of the compound is ________minutes. A compound decomposes by a first-order process. If 36 of the compound decomposes in 60 minutes, the half-life of the compound is ________minutes. -5 93 41 -18 39

Answers

Answer: The half-life of the compound is 93 minutes

Explanation:

Expression for rate law for first order kinetics is given by:

[tex]t=\frac{2.303}{k}\log\frac{a}{a-x}[/tex]

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant =100

a - x = amount left after decay process = (100-36) = 64

a) for completion of 36 % of reaction

[tex]60=\frac{2.303}{k}\log\frac{100}{100-36}[/tex]

[tex]k=\frac{2.303}{60}\log\frac{100}{64}[/tex]

[tex]k=0.0074min^{-1}[/tex]

b) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

[tex]t_{\frac{1}{2}}=\frac{0.693}{k}[/tex]

[tex]t_{\frac{1}{2}}=\frac{0.693}{0.0074min^{-1}}=93min[/tex]

The half-life of the compound is 93 minutes

A bowling ball and basketball collide, what direction do they go and how is energy transferred?

Answers

Answer:

When the batter hits the ball, there is a force applied, and energy is transferred. The ball will move in the direction the force is pushing it. If two objects collide, energy will be transferred between both, and there will be a change in motion.

Explanation:

What is Magnesium phosphide cation and Anion

Answers

Answer:

Magnesium Phosphide has a formula of Mg3P2 . Magnesium is a metal cation with a charge of Mg+2. Phosphorus is a nonmetal anion with a charge of P−3. In order to bond ionically the charges must be equal and opposite

Explanation:

What is the molecular polarity of calcium hydroxide

Answers

Answer:Calcium hydroxide is a polar compound. 2. Carbonates are insoluble in water unless it is combined with NH4+ or any group 1A ion. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed, or slaked with water.Ca(OH)2 is an ionic compound, in which Ca is the cation and OH is the anion. Ca (calcium) has a charge of 2+, since it is in group 2 on the periodic table.

Explanation: hope this helps and have a great night

ASAP!! How many moles are in 125 g of H2SO4

Answers

Answer:

1.276 moles

Explanation:

molar mass of H2SO4 = 2(1)+(32)+4(16) = 98 g

So, there are (125g)(1 mol/98g) = 1.276 moles

1.276 moles are in 125 g of H[tex]_2[/tex]SO[tex]_4[/tex]. A mole is indeed a unit that enables us to correlate the mass of a material with its components.

What is mole?

It is defined as the amount of any material that has the same number of basic units as there are in a precisely measured sample of 12C that weighs 12 g. Latin's word for pile, stack, or assemblage is "mole." The number of entities that make up a mole was discovered via experimentation to be 6.022 X 1023.

A mole is indeed a unit that enables us to correlate the mass of a material with its components. The total of the masses of all the atoms that make up one mole of a molecule, expressed in grams, is what is known also as molecular mass or molar mass. A substance's molar mass may be calculated by multiplying its given mass by its g/mol density.

molar mass of H[tex]_2[/tex]SO[tex]_4[/tex] = 2(1)+(32)+4(16)

                                    = 98 g

mole= (125g)(1 mol/98g)

       = 1.276 moles

Therefore, 1.276 moles are in 125 g of H[tex]_2[/tex]SO[tex]_4[/tex].

To know more about mole, here:

https://brainly.com/question/15209553

#SPJ5

Las capas del lecho marino del Mar Mediterráneo cuentan la historia de los cambios ambientales en el hoy desértico norte de Africa desde hace 160.000 años, haciendo uso de la regla de tres simple y notación científica indicar a cuántas décadas corresponde este periodo de tiempo con procedimiento

Answers

Answer:

160.000 años corresponde a 16.000 décadas.

Explanation:

Para resolver correctamente el ejercicio debemos plantear la regla de tres simple de la siguiente manera:

1 década equivale a 10 años; A cuantas decadas equivalen 160.000 años?

1 década→10 años

          x    ←160.000 años

Debemos multiplicar 160.000 por 1 y luego dividir entre 10 ;

x=([tex]\frac{160.000x1}{10}[/tex])=16.000 décadas; en notación científica sería 16x10^3.

Respuesta: 160.000 años corresponde a 16.000 décadas.

Is salt water considered a mixture or a solution?

Answers

Answer: Salt water is a solution because it has these two characteristics: it has the same concentration of each of its parts throughout the solution, and it can be separated by some physical process.

Explanation: Literally learning about this in my science class XD

Salt water can be separated into its parts. You can let the water evaporate, and you will have just the salt left. Salt water is a solution because it has these two characteristics: it has the same concentration of each of its parts throughout the solution, and it can be separated by some physical process.

What is the difference between a homogenous and a heterogeneous?

Answers

Answer:

Explanation:

A homogeneous mixture consists of one single phase while a heterogeneous mixture consists of two or more phases.

please fill this formula​

Answers

1.) Na
2.) Cl ( at the second blank)
sodium metal+hydrochloric acid

Which of the following is a binary ionic compound?
a Sulfuric acid
b Hydrogen sulfide
с
Sodium fluoride
d None of the above

Answers

Answer:

D; none of the above

Explanation:

Binary ionic compounds are composed of one metal and one nonmental.The metals are always the first element whereas the nonmetals are the second element.

Answer: Sodium fluoride

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