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mylen [45]
3 years ago
8

How can a chemical reaction be sped up?Select from the drop-down menu to correctly complete the statement.

Chemistry
2 answers:
viktelen [127]3 years ago
8 0

Answer: Temperature

Explanation:

RoseWind [281]3 years ago
6 0

Answer:

Concetration

Explanation:

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What percentage of oxygen is attributed fossil fuel combustion
Oxana [17]

Answer:

C. 4%

Explanation:

The answer is 4%

6 0
2 years ago
The radioactive atom R 88 210 a is an alpha emitter. What nucleus does it produce?
olasank [31]

Answer:

X 86 206

Explanation:

Radioactive atoms are nuclei that can under go disintegration to emit either an alpha particle, beta particle or gamma radiation. The process could be spontaneous or stimulated.

When a radioactive atom R 88 210 emits alpha particle, it would produce an element with atomic number 86 and mass number 206 i.e X 86 206. An alpha particle is usually a helium nucleus.

                     R^{210} ⇒ x^{206} + He^{4} + energy

5 0
3 years ago
Three fundamental types of organic molecules are proteins, carbohydrates, and lipids. What is the fourth type?
Alja [10]

Answer:

Nucleic acids

That make our genes.

5 0
3 years ago
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2. How do chemical weathering and deposition contribute to the formation of the features shown here?
Nimfa-mama [501]
Is there a picture or something? i cant see it.
6 0
3 years ago
PLS HELP!! <br> Balance this equation: __H2+ 2 O2---&gt; 2 H2O
alekssr [168]

Answer:

 2H₂   +   O₂  →   2H₂O

Explanation:

The expression of the equation is given as:

              _H₂   +   2O₂  →   2H₂O

Now for expression above,

                           Reactants                                          Products

H                              2                                                            4

O                              4                                                           2

to balance the equation, we use 2 moles of hydrogen gas and 1 mole of oxygen gas;

           2H₂   +   O₂  →   2H₂O

6 0
3 years ago
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