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Elodia [21]
3 years ago
11

What is the key building block of living tissue and ecosystems? Hope u can help!

Chemistry
1 answer:
myrzilka [38]3 years ago
7 0

Answer:

Your answer is cells. Hope this helps!

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The molecular weight of H 2 SO 4 is:<br><br> 49.078 g/mole<br> 98.086 g/mole<br> 194.296 g/mole
romanna [79]

Answer:

the molecular weight of H2SO4 is 98.086g/mole

8 0
3 years ago
In experiment 1, how many moles of benzoic acid are present? how many moles of sodium bicarbonate are contained in 1 ml of a 10%
nexus9112 [7]

First, let us calculate the moles of solute or sodium bicarbonate is in the 1 ml solution.

<span>moles  = 1 mL * (1 g / 9 mL) = 0.11 moles</span>

 

The molar mass of sodium bicarbonate is 84 g/mol, therefore the mass is:

mass = 0.11 moles * 84 g/mol

<span>mass = 9.33 g</span>

6 0
3 years ago
Campare and Conteast Physical and chemical properties.
I am Lyosha [343]

Answer:

Physical properties are changes in color, weight, mass, density, volume, whether it is freezing, tarnishing, boiling, etc. while chemical properties are changes in the compound of the object such as whether an object is/isn't flammable, affected by acid, it dissolves, ferments, rots, ignites in water, etc.

Explanation:

Physical property examples: a piece of steel is cut in half, a sugar cube is ground up into a powder, ice melts into water, clouds form in the sky, you mow the lawn, the water turned purple when you dropped red and blue dye in it, leaves grow in the spring, ethyl alcohol boils at 79° C, you cut apples up

Chemical property examples: pancakes cook on the griddle, fireworks explode in th sky, Alka-Seltzer gives off carbon dioxide when added to water, roasting a marshmellow, milk sours when left on the counter, burning wood in a bonfire, salt dissolves in water, food is digested in the stomach

3 0
3 years ago
Question 54
dusya [7]
I really hope and think it’s E
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3 years ago
C6H12O6 O3 NF3 Co KNO3 H2 CO<br><br> Which one of these are molecules list all that apply
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