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olasank [31]
3 years ago
11

A substance that speeds up the rate of a chemical reaction is called

Chemistry
2 answers:
GuDViN [60]3 years ago
4 0
A substance that speeds up the rate of a chemical reaction is called a A. Catalyst.
Tatiana [17]3 years ago
4 0

The answer is Catalyst. 100% final answer.

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How are protists different from plants​
kotegsom [21]

Answer/ explanation :

Protist can be multicellular or unicellular organisms

Plants are all multicellular and also exhibit cellular differentiation.

Protist can be autotroph, heterotrophic or decomposer

Plants are only autotrophs because they manufacture their own food through photosynthesis

Protists are microscopic, more diverse and abundant in nature

Plants are big and complex in nature

Nuclear DNA strands in plants are of higher complexity than those of protist

Plants require oxygen for cellular respiration process unlike protist which can be aerobic and some other species facultative anaerobic

Plants only can reproduce asexually through bulbs and tubers as in yam, potatoes while protists reproduce either sexually through meiosis or asexually through simple cell division.

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3 years ago
Scientific research has found many negative effects of common household materials. Which of the following elements was once used
Volgvan
Lead.  

Lead paint was a big problem and now lead has been removed from paint because it was found to be dangerous to the health of living organisms.

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4 0
3 years ago
Write a balanced chemical equation for the standard formation reaction of gaseous dinitrogen tetroxide n2o4 .
eduard
<span>Answer: 3 N2H4 (l) = 4 NH3 (g)+ N2 (g) 2 N2H4 (l) + N2O4 (g) =3 N2 (g)+ 4 H2O (g)</span>
3 0
3 years ago
Read 2 more answers
Consider the elements carbon, C and silicon, Si.
Aneli [31]

Answer:

and

Explanation:

All the carbon group atoms, having four valence electrons, form covalent bonds with nonmetal atoms; carbon and silicon cannot lose or gain electrons to form free ions, whereas germanium, tin, and lead do form metallic ions but only with two positive charges

the similarities is that Both carbon and silicon commonly form compounds, easily sharing electrons with other elements. Carbon will make multiple bonds with other carbon molecules by forming single, double and triple covalent bonds. ... Carbon and silicon are often combined, with carbon serving as silicon's backbone.

3 0
2 years ago
In an exothermic reaction, energy is transferred from
vivado [14]
System to surroundings since energy is released in an exothermic reaction
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