Chemistry College

This is how osmium appears in the periodic table.A purple box has O s at the center and 76 above. Below it says osmium and below that 190.23.

Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?

76
114
190
266

Answers

Answer 1

Answer:

it B 114 on edge 2020

Explanation:

UwU

Answer 2

Answer:

it B 114

Explanation:

Related Questions

What mass of water can be heated from 10.0 C to 38.0 Celsius by addition of 3,500j? (Specific heat capacity of water is 4.18 j/g C)

Answers

Mass of water : 29.904 g

Further explanation

Heat can be formulated

Q=m.c.Δt

Q, heat, J

m,mass, g

c, specific heat, j/g C

Δt,temperature, C

Δt,temperature

[tex]\tt 38-10=28^oC[/tex]

mass of water

[tex]\tt m=\dfrac{Q}{c.\Delta t}\\\\m=\dfrac{3500}{4.18\times 28}\\\\m=29.904~g[/tex]

Consider the following isomerization reactions of some simple sugars and values for their standard Gibbs free energy ΔGo:reaction A: glucose-1-phosphate rightarrow glucose-6-phosphate, ΔGo = -7.28 kJ/mol reaction B: fructose-6-phosphate rightarrow glucose-6-phosphate, ΔGo = -1.67 kJ/molCalculate for the isomerization of glucose-1-phosphate to fructose-6-phosphate.Calculate the equilibrium constant K for the isomerization of glucose-1-phosphate to fructose-6-phosphate at 298 K.

Answers

Answer:

Explanation:

glucose-1-phosphate  →  glucose-6-phosphate,  ΔGo = -7.28 kJ/mol

fructose-6-phosphate → glucose-6-phosphate,    ΔGo = -1.67 kJ/mol

subtracting the equation

glucose-1-phosphate - fructose-6-phosphate  = 0 , ΔGo =  -7.28  - ( -1.67 ) kJ / mol

glucose-1-phosphate  = fructose-6-phosphate      ΔGo  = - 5.61 kJ / mol

- ΔGo = RT lnK

5.61 x 10³ = 8.31 x 298 x lnK

lnK = 2.265

K = 9.63 .

Genes can be best defined as:


A. the traits expressed by the organism

B. the DNA that make up a chromosome

C. a form of reproduction

D. section of DNA that codes for a specific trait

Answers

Answer:

D. section of DNA that codes for a specific trait

Explanation:

Genes are sections of the DNA that codes for a specific trait. They are simply defined as the basic physical and functional unit of hereditary.

Genes are usually found encoded in the DNA. The effects produced by genes result from their coordination of certain protein synthesis activities. Inheritance is attained when genes are passed from parents to offspring.

What mass (in g) of lithium metal can be produced by the electrolysis of molten LiCl for 23.93 hr with an electrical current of 17.7?

Answers

Answer:

1.828 g

Explanation:

The half-reaction is:

Li⁺ + 1e⁻ → Li(s)

First we calculate the coulombs:

Coulombs = Amperes * seconds23.93 hr * 60 = 1435.8 sCoulombs = 17.7 A * 1435.8 s = 25413.66 C

Then we calculate the number of lithium moles, using Faraday's constant:

25413.66 C * [tex]\frac{1mol(e^-)}{96485C} *\frac{1molLi}{1mol(e^-)}[/tex] = 0.2634 mol Li

Finally we convert moles to grams:

0.2634 mol Li * 6.941 g/mol = 1.828 g

Scientists must be open to questioning everything, even the things they think they already know. Which sentence from the article provides the BEST support to the statement above? (A) Scientific discoveries do not take place overnight, and many are small and gradual. (B) Chances are, you'll stumble many times before you find your footing, and that's OK. (C) We live in a world where knowledge and uncertainty can and do coexist. (D) When we are curious about other people, we can become more compassionate.​

Answers

Answer:

The sentence that best supports the statement above is (C) We live in a world where knowledge and uncertainty can and do coexist

List at least four characteristics of salts.
Please help me hurry
50points

Answers

Answer:

Salt is cubed, crystal like, grainy, and shiny

Explanation:

Answer:

salt is basic in nature

it is of diffrent type

they are of 4 type

1 is sodium hydroxide

2 is bleaching powder

3 is baking soda

4 is washing soda

ILL GIVE BRAINLIST


How many valence electrons does boron gain when it becomes an anion?


A. 2

B. 3

C. 4

D. 5

Answers

Answer:

5

Explanation:

answer is c because if you add the them up you get 5

Sam read that all subsystems interact with each other. Which example shows how changes in the cryosphere can affect the geosphere?

Answers

Answer:

Land that gains weight can rise slowly.

Explanation:

:D

A piston contains 0.39L of air at 1.0 atm. If the pressure on the piston is increased to 5.6 atm, what is the new volume?

Answers

The new volume : 0.07 L

Further explanation

Boyle's Law  

At a constant temperature, the gas volume is inversely proportional to the pressure applied  

[tex]\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]

P₁=1 atm

V₁=0.39 L

P₂=5.6 atm

[tex]\tt V_2=\dfrac{P_1.V_1}{P_2}\\\\V_2=\dfrac{1\times 0.39}{5.6}\\\\v_2=\boxed{\bold{0.07~L}}[/tex]

Vsepr diagram for phcl2

Answers

Huh ???? I’m confused

Sulfur (S) and oxygen gas (02) undergo a chemical
reaction to form sulfur trioxide (SO3).

Answers

Answer:

C

Explanation:

I just think it is the right answer :) Sorry if I am wrong..

Answer:

c

Explanation:

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