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3 years ago

Which element was first discovered on the sun? hydrogen carbon oxygen helium

2 answers:

3 0

The element first discovered in the sun is the element Helium. This noble gas is the second most abundant element in the universe and was discovered on the sun before it was discovered on the earth. Helium is the result of the nuclear fusion of hydrogen creating thus the mass of energy in the sun.

Anon25 [30]3 years ago

3 0

Answer:

Helium

Explanation:

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Nitrogen dioxide is one of the many oxides of nitrogen (often collectively called "") that are of interest to atmospheric chemis

Lubov Fominskaja [6]

Answer:

Explanation:

idek

6 0

3 years ago

What type of compound is sodium fluoride?

Aloiza [94]

It is an inorganic compound
hope this helps

5 0

3 years ago

Which statetment provides the best explanation of where traits come from?

goldfiish [28.3K]

the traits or characteristics we have, is aquired from both parents, so

correct option is :

D: Genes inherited from both parents

3 0

3 years ago

Calculate the vapor pressure of a solution made by dissolving 109 grams of glucose (molar mass = 180.2 g/mol in 920.0 ml of wate

Fynjy0 [20]

Given data: molar mass = 180.2 g/mol in 920.0 ml of water at 25 °c.
the vapor pressure of pure water at 25 °c is 23.76 mm hg.
Asked: the vapor pressure of a solution made by dissolving 109 grams of glucose

Solution:
moles glucose = 109 g/ 180.2 g/mol=0.605
mass water = 920 mL x 1 g/mL = 920 g
moles water = 920 g/ 18.02 g/mol=51.1
mole fraction water = 51.1 / 51.1 + 0.605 =0.988
vapor pressure solution = 0.988 x 23.76 = 23.47 mm Hg

6 0

3 years ago

As you have seen, ozone is formed in the upper atmosphere through the reaction:

baherus [9]

The rate law equation for Ozone reaction

r=k[O][O₂]

<h3>Further explanation</h3>

Given

Reaction of Ozone :.

O(g) + O2(g) → O3(g)

Required

the rate law equation

Solution

The rate law is a chemical equation that shows the relationship between reaction rate and the concentration / pressure of the reactants

For reaction

aA + bB ⇒ C + D

The rate law can be formulated:

$\large{\boxed{\boxed{\bold{r~=~k.[A]^a[B]^b}}}$

where

r = reaction rate, M / s

k = constant, mol¹⁻⁽ᵃ⁺ᵇ⁾. L⁽ᵃ⁺ᵇ⁾⁻¹. S⁻¹

a = reaction order to A

b = reaction order to B

[A] = [B] = concentration of substances

So for Ozone reaction, the rate law (first orde for both O and O₂) :

$\tt \boxed{\bold{r=k[O][O_2]}}$

5 0

3 years ago