CHEMISTRY HIGH SCHOOL

Which organism would probably be the first to grow on a new volcanic island? A.grass

B.blackberry bush

C.coconut palm tree

D.pine seedling

Answers

Answer 1
Answer: Option A. grass it will grow anytime and anywhere.
Answer 2
Answer:

Answer:The answer would be a

Explanation:

Related Questions

3 x 1023 molecules of element Z have a mass of 38 g. What is the mass of 1 mole?
The periodic table is based on an element's A. atomic mass. B. atomic number. C. molecular mass. D. molecular size.
As water evaporates from an open container at 40°C, which one of the following is true? (a) The water becomes warmer as the kinetic energy of the liquid water molecules increases. (b) The water molecules decompose into hydrogen and oxygen molecules. (c) The water molecules return to the surface as fast as they leave. (d) The water vapour molecules have greater kinetic energy than the liquid water molecules.
From where does the nitrogen in the nitrogen cycle originate?a. root nodules of legumes b. the atmosphere c. decomposers d. nitrifying bacteria
State, in terms of the arrangement of atoms, the difference in hardness between diamond and graphite.

Help asapppshow work and help me plz for the other one just do 22,24,25 i will make you brainllest

Answers

Answer:  22) <     24) 0.003    30,000     25) 1 cc = 1 ml

Explanation:

When give a number in scientific notation, the exponent tells you how many places to move the decimal point.

  • Negative moves to the left.
  • Positive moves to the right.

22)\ 5* 10^(-4)=0.0005\quad \longrightarrow 0.0005<1.0

24)\ 3* 10^(-4)=0.0003\qquad \qquad 3* 10^4=30,000

25) 1 cubic centimeter (cc) = 1 milliter (ml)

     The conversion factor is 1 to 1.  You just need to change cc to ml

Reflecting and refracting telescopes are used to gather radiation from space. Which of these statements best explains why a refracting telescope is made smaller than a reflecting telescope?A. Small lenses cause less distortion in images than big lenses.

B. Small lenses cause more distortion in images than big lenses.

C. Small telescopes gather more radiation from space than big telescopes.

D. Small telescopes produce clearer images of distant objects than big telescopes.

* PLEASE ONLY ANSWER THIS QUESTION IF YOU KNOW YOUR ANSWER IS 100% CORRECT * Thank you! :)

-Also- I have heard there is "no right answer" to this question from others, but I still need to answer it, (preferably correctly!)

Answers

I think the correct answer from the choices listed above is option A. A refracting telescope is made smaller than a reflecting telescope because small lenses cause less distortion in images than big lenses.  They are not subject to chromatic aberration because reflected light does not disperse according to wavelength.

Answer:A

Explanation:Test

Which of the following characteristics is not a property of an acid? Has a sour taste Accepts an H+ ion in reaction May cause damage to buildings, statues, and rivers Increases the concentration of hydronium ions in an aqueous solution

Answers

Answer : Option B) Accepts an H+ ion in reaction


Explanation : Acid is a lewis acid which forms a bond by accepting a pair of electrons. Acids, when dissolved increase the concentration of hydronium ion in the solution. So, the statement which is Acid accepts H+ ion is irrelevant here, as base accepts the H+ ion in a reaction.

Answer : The incorrect option is, Accepts an H⁺ ion in reaction.

Explanation :

Acid : It is a type of species which contains hydrogen ion.

Properties of an acid :

The taste of an acid is sour.

An acid does not feel slippery.

Acid reacts with the active metal to form a gas and a salt.

It change the color of litmus paper to red or pink.

It conduct electricity.

It react with carbonates to give salt.

It react with a metal to give compound and hydrogen gas.

Base : It is a type of species which contains hydroxide ion.

Properties of an base :

The taste of base is bitter.

The base feels slippery.

It does not react with the active metal.

It change the color of litmus paper to blue.

It conduct electricity.

As per question, all options are the properties of an acid while the statement accepts an H⁺ ion in reaction is in the property of an acid because it donates hydrogen ion in the solution.

Hence, the incorrect option is, Accepts an H⁺ ion in reaction.

Each level of energy transfer in an ecosystem or food chain is called a(n) trophic level

energy level

consumer level

food level

Answers

The correct answer is the first option. Each level of energy transfer in an ecosystem or food chain is called a trophic level. It comprises organisms that share the same function in the food chain in relation to the primary sources of energy.
The correct option is the first one 

At equilibrium, a sample of gas from the system is collected into a 4.00 L flask at 600 K. The flask is found to contain 3.86 g of PCl₅, 12.7 g of PCl₃, and 13.3 g of Cl₂. What are the values of Kc and Kp for this reaction?

Answers

Answer:

Explanation:

                                             PCl₅    ⇄    PCl₃    +     Cl₂

                                           1 mole         1 mole        1 mole

molecular weight of  PCl₅ = 208.5

molecular weight of PCl₃  = 137.5

molecular weight of Cl₂  =       71

moles of PCl₅ = .0185

moles of PCl₃ = .0924

moles of Cl₂ = .1873

Total moles = .2982 moles

mole fraction of PCl₅ = .062

mole fraction of  PCl₃ = .31

mole fraction of Cl₂ = .628

If total pressure be P

partial pressure of  PCl₅ = .062 P

partial pressure of  PCl₃ = .31 P

partial pressure of  Cl₂ = .628 P

Kp = .31 P  x  .628 P /  .062 P

= 3.14 P

To calculate Total pressure P

PV = nRT

P x 4 x 10⁻³ = .2982 x 8.31  x 600

P = 371.7 x 10³

= 3.717 x 10⁵ Pa

Kp = 3.14 P = 3.14 x  3.717 x 10⁵ Pa

= 11.67 x 10⁵ Pa

Kp  = Kc x ( RT )^(\triangle n)

\triangle n = 1

11.67 x 10⁵ = Kc x ( 8.31* 600 )^(1)

Kc = 234

Una muestra contiene 160 g de bromo y 2 g de hidrógeno. Otra muestra de bromuro de un metal contiene 4 g de bromuro y 1 g de metal. Halla el peso equivalente del metal.

Answers

Answer:

x = 40\,g

Explanation:

El peso equivalente del metal se calcula por regla de tres simple:

x = \left((160\,g\,Br)/(4\,g\,Br)\right)\cdot (1\,g)

x = 40\,g

Answer:

El peso equivalente del metal es 1/20 g

Explanation:

Una muestra contiene 160 g de bromo y 2 g de hidrógeno. Otra muestra de bromuro metálico contiene 4 g de bromuro y 1 g de metal. Encuentra el peso equivalente del metal

Aquí tenemos la primera muestra que tiene la relación de bromo a hidrógeno de 160 g de bromo a 2 g de hidrógeno.

Eso es 160 g de bromo está presente con 2 g de hidrógeno

Dividiendo la combinación anterior por 160 para encontrar la cantidad de hidrógeno que se combina con 1 g de bromo, tenemos

(160 g) / 160 de bromo está presente con (2 g) / 160 de hidrógeno

1 g de bromo está presente con 1/80 g de hidrógeno

Por lo tanto, 4 g de bromo están presentes con 4/80 g de hidrógeno o tenemos;

4 g de bromo están presentes con 1/20 g de hidrógeno

Por lo tanto, el peso equivalente del metal = 1/20 g.
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How many moles of hydrogen are needed to produce 13.78 mol of ethane?
Which of the following would be an example of applied science?