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daser333 [38]
3 years ago
7

DESPERATE WILL GIVE BRAINLIST AND THANKS

Chemistry
1 answer:
Annette [7]3 years ago
8 0

Answer:

20 grams

Explanation:

40g= 300

x = 150

cross multiply, 40*150/300

6000/300= 20g

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What is redox reaction??<br><img src="https://tex.z-dn.net/?f=%20%5C%5C%20%20%5C%5C%20" id="TexFormula1" title=" \\ \\ " alt="
MAXImum [283]

Answer:

Oxidation–reduction or redox reactions are reactions that involve the transfer of electrons between chemical species (check out this article on redox reactions if you want a refresher!). The equations for oxidation-reduction reactions must be balanced for both mass and charge, which can make them challenging to balance by inspection alone. In this article, we’ll learn about the half-reaction method of balancing, a helpful procedure for balancing the equations of redox reactions occurring in aqueous solution.

Explanation:

8 0
3 years ago
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A total of 20.0 mL of sodium hydroxide (NaOH) was neutralized by 30.0 mL of 0.250 M hydrogen bromide (HBr). What was the concent
Karolina [17]

Answer:

0.375 M

Explanation:

NaOH(aq) + HBr(aq) ------------> NaBr(aq) + H2O(l)

Concetration of acid CA= 0.250M

Concentration of base CB= ????

Volume of acid VA= 30.0mL

Volume of base VB= 20.0mL

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Number of moles of base nB= 1

CA VA/CB VB= nA/nB

CB= CAVAnB/VB nA

= 0.25× 30×1/20×1= 0.375 M

8 0
3 years ago
30 points please no links!) A sea star has one of its arms break off. That arm grows into its own separate organism through ____
Juli2301 [7.4K]

Answer:

B) Regeneration

the action or process of regenerating or being regenerated, in particular the formation of new animal or plant tissue.

PLEASE MARK THIS AS BRAINLIEST!

4 0
3 years ago
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The electronic configuration of an atom of element X is 2,8,2 what will be the valency of the element x
KIM [24]

The element is Magnesium

  • It has total 12 electrons

it has electronic configuration

\\ \sf\longmapsto 2,8,2

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6 0
2 years ago
The reaction of a metal with oxygen to form rust is called
azamat

The reaction of a metal with oxygen to form rust is called as redox reaction.

Explanation:

The process during which the surface of metal reacts with the oxygen ions present in air, it has tendency to get oxidized that is formation of an oxide layer on the surface of the metal. Generally, it occurs when metals like iron comes in contact with moisture or water. So the oxygen in moisture reacts with iron giving its electron and getting oxidized and reducing the surface of metal by forming metal oxide. So the complete process of formation of rust is termed as redox reaction. As here both oxidation and reduction is taking place.

3 0
3 years ago
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