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sladkih [1.3K]
3 years ago
10

When did the first particles of matter originate

Chemistry
1 answer:
Alisiya [41]3 years ago
5 0
No one is 100% sure when particles of matter originated however scientist believe it had to be some time before the Big Bang
You might be interested in
What is the molarity if 16. 0 grams of NaOH is dissolved in 855 mL of solution?
DiKsa [7]

Answer:

734.0 grams

Explanation:

Because 16.0 and 855 mL it is 734.0 grams :) hope it helps

4 0
2 years ago
Fresh pineapple contains the enzyme ______, which helps in the digestion of food. A.romelain B.bromelain C.bromatose D.maltose E
Dafna1 [17]

Answer:

B. bromelain

Explanation:

Pineapple also contains a digestive enzyme called bromelain, which is a mixture of proteolytic enzymes and has been chemically known since 1876 (Taussig and Batkin, 1988).

3 0
3 years ago
A compound that contains both potassium and oxygen formed when potassium metal was burned in oxygen gas. the mass of the compoun
Artemon [7]
Answer:
             3.2 g of O₂

Solution:
             This reaction is for the formation of Potassium Superoxide, The reaction is as follow,

                                           K  +  O₂     →     KO₂

First let us confirm that either the given amount of Potassium produces the given amount of Potassium oxide or not,
So,
As,
                39.098 g (1 mole) K produced  =  71.098 g of K₂O
So,
                          3.91 g of K will produce  =  X g of K₂O

Solving for X,
                      X  =  (3.91 g × 71.098 g) ÷ 39.098

                      X  =  7.11 g of K₂O

Hence, it is confirmed that we have selected the right equation,
So,
As,
                     39.098 g of K required  =  32 g of O₂
So,
                     3.91 g of K will require  =  X g of O₂

Solving for X,
                     X  =  (3.91 g × 32 g) ÷ 39.098 g

                     X  =  3.2 g of O₂
4 0
3 years ago
Read 2 more answers
First person with the right answer gets brainliest thanks (btw the numbers on the right are the answers choose the right one)
a_sh-v [17]

Answer:

there isnt anything

Explanation:

7 0
2 years ago
Read 2 more answers
What type of reaction does each of the following equations represent?
vekshin1

Answer:

Option C. Decomposition

Explanation:

To know which option is correct, it is important we know what is a single displacement reaction, double displacement reaction and decomposition reaction.

A Single displacement reaction can be defined as a reaction in which a single element is replaced by another element in a compound.

A double displacement reaction is a reaction involving the exchange of ions of two parts of ionic compounds to form two different compounds.

A decomposition reaction is a reaction in which a compound splits into two or more simpler compound or element.

Bearing the above definitions in mind and considering the question given above, we can conclude that the reaction given in the question above is a decomposition reaction since the compound (NH₄OH) splits into two different compound (NH₃ and H₂O)

3 0
3 years ago
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