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myrzilka [38]
2 years ago
8

This is probably almost the easiest question ever but i still need help so-

Chemistry
1 answer:
kati45 [8]2 years ago
6 0

Soil is our life support system. Soils provide anchorage for roots, hold water and nutrients. Soils are home to myriad micro-organisms that fix nitrogen and decompose organic matter, and armies of microscopic animals as well as earthworms and termites.

bbbb

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Are electrons exchanged between ionic or covalent bonds
Rudik [331]

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals.

3 0
3 years ago
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Bună ziua, mă poate ajuta și pe mine cineva, spunândumi din ce substanțe este formată cărămida și care este formula
Ne4ueva [31]

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5 0
3 years ago
You are throwing a pizza party for 15 people and figure that each person will eat 4 slices. You call the pizza place and learn t
ANEK [815]

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15 people x 4 slices so you’ll need 60 pieces

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You need 5 pizzas. $14.78 x 5 = 73.90.

Explanation:

the answer is that one 73.90 is rounded nearest cent : ) took me a while to get it

8 0
3 years ago
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31.5 grams of an unknown substance is heated to 102.4 degrees Celsius and then placed into a calorimeter containing 103.5 grams
Alexxandr [17]
Heat gained in a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:<span>

Heat = mC(T2-T1) 

When two objects are in contact, it should be that the heat lost is equal to what is gained by the other. From this, we can calculate things. We do as follows:

</span>Heat gained = Heat lost
mC(T2-T1) = - mC(T2-T1) 
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C = 1.57 J/C-g

Hope this helps.
5 0
3 years ago
Which BEST describes how an experiment should be designed?
vova2212 [387]

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form a hypothesis.

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