Based on your findings, which theory about alien thickness seems most valid or most accurate?

Answers

Answer 1

Answer:

Answer:

C.) Alien thickness is mainly affected by temperature. The greater thickness at lower temperatures may be used as a way to stay warmer in colder weather.

Explanation:

Environmental systems.

Answer 2

Answer: Well aliens are like mysteries on Sci-Fi. Aliens aren't humans or just beings that are different from us. When you're saying the thickness, I am assuming about the body of the alien is full of hard and rusty skin that is not like ours.
Hope this helped!!! >.< If not I am sorry....just didn't understand what you were getting to at. I am sorry.

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Which isotope will spontaneously decay and emit particles with a charge of +2?(1) 53Fe (3) 198Au
(2) 137Cs (4) 220Fr

Answers

Answer: The correct option is 4.

Explanation: All the options will undergo some type of radioactive decay processes. There are 3 decay processes:

1) Alpha decay: It is a decay process in which alpha particle is released which has has a mass number of 4 and a charge of +2.

$_Z^A\textrm{X}\rightarrow _(Z-2)^(A-4)\textrm{Y}+_2^4\alpha$

2) Beta-minus decay: It is a decay in which a beta particle is released. The beta particle released has a mass number of 0 and a charge of (-1).

$_Z^A\textrm{X}\rightarrow _(Z+1)^A\textrm{Y}+_(-1)^0\beta$

3) Beta-plus decay: It is a decay process in which a positron is released. The positron released has a mass number of 0 and has a charge of +1.

$_Z^A\textrm{X}\rightarrow _(Z-1)^A\textrm{Y}+_(+1)^0\beta$

For the given options:

Option 1: This nuclei will undergo beta-plus decay process to form $_(25)^(53)\textrm{Mn}$

$_(26)^(53)\textrm{Fe}\rightarrow _(25)^(53)\textrm{Mn}+_(+1)^0\beta$

Option 2: This nuclei will undergo beta-minus decay process to form $_(80)^(198)\textrm{Hg}$

$_(79)^(198)\textrm{Au}\rightarrow _(80)^(198)\textrm{Hg}+_(-1)^0\beta$

Option 3: This nuclei will undergo a beta minus decay process to form $_(56)^(137)\textrm{Ba}$

$_(55)^(137)\textrm{Cs}\rightarrow _(56)^(137)\textrm{Ba}+_(-1)^0\beta$

Option 4: This nuclei will undergo an alpha decay process to form $_(85)^(216)\textrm{At}$

$_(87)^(220)\textrm{Fr}\rightarrow _(85)^(216)\textrm{At}+_2^4\alpha$

Hence, the correct option is 4.

It is 220Fr that would spontaneously decay and emit particles with a charge of +2.

What is your zodiac sign? i’m a sagittarius

Answers

Answer: ima gemini :3

Explanation:

Answer:

OMG same im Dec 18

Explanation:

The reaction Ba(NO3)2(aq) + Na2SO4(aq) → 2NaNO3(aq) + BaSO4(s) goes to completion because a

Answers

Answer:

This reaction is completed by a double displacement

A double displacement occurs when two different salts are mixed in an aqueous state, since when they dissolve a salt their ions are dissociated and when mixed with another salt in an aqueous state they combine and form two new compounds

Double displacement reactions

$AB + CD\longrightarrow AC+ BD$

$Ba(NO_3)_2+Na_2SO_4 \longrightarrow 2NaNO_3 +BaSO_4$

Ba(NO₃)₂ + Na₂SO₄ → 2NaNO₃ + BaSO₄

The reaction goes to completion because it has the same amount of elements in the reactants and products.

For the reactions system 2H2(g) + S2(g) 2H2S(g), a 1.00 liter vessel is found to contain 0.50 moles of H2, 0.020 moles of S2, and 68.5 moles of H2S. Calculate the numerical value of the Keq of this system. K =
Are the products or reactants favored?

The equilibrium system N2O4(g) 2NO2(g) was established in a 1.00-liter vessel. Upon analysis, the following information was found: [NO2] = 0.500 M; [N2O4] = 0.0250 M. What is the value of Keq?

3.Which is the correct expression for Keq when the chemical reaction is as follows:
N2 + 3H2 2NH3.

4.Reactions which do not continue to completion are called ______reactions.

Answers

Answer: 1) $2H_2(g)+S_2(g)\rightleftharpoons 2H_2S(g)$

Equilibrium constant is defined as the ratio of the product of concentration of products to the product of concentration of reactants each term raised to their stochiometric coefficients.

$K_(eq)=([H_2S]^2)/(H_2]^2* [S_2])$

where [] = concentration in Molarity= $\frac{moles}{\text {Volume in L}}$

Thus $[H_2S]=(68.5)/(1.0)=68.5M$

$[H_2]=(0.50)/(1.0)=0.50M$

$[S_2]=(0.020)/(1.0)=0.020M$

$K_(eq)=([68.5]^2)/(0.50]^2* [0.020])=938450$

As the value of K is greater than 1, the reaction is product favored.

2) $N_2O_4(g)\rightleftharpoons 2NO_2(g)$

$K_(eq)=([NO_2]^2)/([N_2O_4])$

$K_(eq)=([0.500]^2)/([0.0250])=10$

3) $N_2+3H_2\rightleftharpoons 2NH_3$

$K_(eq)=([NH_3]^2)/([N_2]* [H_2]^3)$

4) Reactions which do not continue to completion are called equilibrium reactions as the rate of forward reaction is equal to the rate of backward direction.

For reaction ax + by <=> cz + dm, the calculation of Keq is $( [z]^(c) [m]^(d) )/([x]^(a) [y]^(b) )$ . So the first Keq is 938450. The Second Keq is 10. The third expression is [NH3]2/([N2][H2]3). The last one is reversible.

Scientific Notation expresses a value as the product of a number between 1 and 10 and

Answers

... and a power ot ten.

For example: 1,3x10^21 is in scientific notation, but 13x10^20 is not in scientific notation.

Scientists think the earth is approximately _____ years old.2 billion
3 billion
4 ½ billion
6 ½ billion

Answers

Answer is 4 ½ billion.

Scientists think the earth's age is 4 ½ billion. This calculation is based on the radioactive dating. Since the formation of the earth, the time period has been divided into 3 major geological time periods as eon. They are phanerozoic, proterozoic and archean.

Final answer:

Scientists estimate that the Earth is approximately 4.5 billion years old based on radiometric dating and other lines of evidence.

Explanation:

The correct answer is 4 ½ billion years. Scientists believe that the Earth is approximately 4.5 billion years old based on evidence from radiometric dating of rocks on Earth and meteorites. Radioactive elements such as uranium and potassium decay into stable isotopes over time, and by measuring the ratio of parent isotopes to daughter isotopes in rocks, scientists can estimate the age of the Earth.

This estimation is supported by other lines of evidence, such as the age of the oldest rocks on Earth and the Moon, and the ages of meteorites. These findings suggest that the Earth formed shortly after the formation of the Solar System, which is estimated to be about 4.6 billion years old.

Therefore, the most accurate estimation is that the Earth is approximately 4.5 billion years old.

Learn more about Age of the Earth here:

brainly.com/question/33600049

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