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RUDIKE [14]
2 years ago
5

How many DIFFERENT ELEMENTS are in this compound? H2SO4

Chemistry
1 answer:
Delvig [45]2 years ago
8 0

Answer:

3 DIFFERENT ELEMENTS

Explanation:

H - Hydrogen

S- Sulfur

O- Oxygen

Therefore there are 3 elements

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A 3.0 L solution contains 73.5 g of H2SO4. Calculate the molar concentration of the solution.
kozerog [31]
C_{m}=\frac{m}{MV}=\frac{73,5g}{98\frac{g}{mol}*3L}=0,25M\\\\
C_{1}V_{1}=C_{2}V_{2}\\\\
0,25M*3L=0,18M*V_{2}\\\\
V_{2}=\frac{0,25M*3L}{0,18M}\approx 4,17L\\\\
4,17L-3L=1,17L
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3 years ago
Which of the following equations is balanced for charge and mass?
Nataliya [291]
<span>B. S⁰(s) + 2H⁺ + 2e⁻ –--> H2S⁰(g)

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3 years ago
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If a cell wants to tell another cell what to do, it will send the message through
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Answer:

it will send the message through the axon

6 0
3 years ago
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scandium47 has a half-life of 35s. suppose you have a 45g sample of scadium 47 how much of the sample remains unchanged after 14
Mars2501 [29]

 The much  of the sample that would remain  unchanged  after 140 seconds is 2.813 g

Explanation

Half life  is time taken for the quantity  to reduce  to half its original value.

if the half life  for Scandium  is 35 sec, then the number  of half life in 140 seconds

=140 sec/ 35 s = 4 half life

Therefore 45 g after first half life = 45 x1/2 =22.5 g

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therefore 2.813 g  of Scandium 47 remains  unchanged.

4 0
2 years ago
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