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mixas84 [53]
3 years ago
11

The Sun appears to move in the sky because

Chemistry
2 answers:
Amiraneli [1.4K]3 years ago
4 0

Answer:

a because the earth rotates on its axis

atroni [7]3 years ago
4 0
A) Earth rotates on its axis
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2. How did Pasteur’s experiment with the flasks help disprove the idea that living things could just appear or come from nonlivi
kolezko [41]
Answer is: Louis Pasteur (1822-1895) disproved spontaneous generation. He boiled liquid with proteins and other nutrients in S-neck flasks and regular flask to kill all microorganism present. In regular flask liquid showed changes when exposed to air and in S-neck flack there was no change (microorganism can not getting in the flask because the S- neck). When he removed S-neck, liquid changed because microorganisms came in liquid.
Pasteur showed it was not the air itself but particles within the air that had microorganisms.
3 0
3 years ago
Read 2 more answers
Write IUPAC names of the following compound : (1) CH3-CH- CH - CH, (2) CH3- C- CH2 - CH - COOH OH CH,​
lawyer [7]

\large \displaystyle\sf \prod^{ \infty }_{n = 1} \bigg( \frac{25}{777} \bigg)^{ {( - 1)}^{n} \bigg( \frac{ \tan^{4n} (x) + 1}{ \tan ^{2n} (x) } \bigg) }

5 0
2 years ago
You want to make 500 ml of a 1 N solution of sulfuric acid (H2SO4, MW: 98.1). How many grams of sulfuric acid do you need?
umka21 [38]

Answer:

24.525 g of sulfuric acid.

Explanation:

Hello,

Normality (units of eq/L) is defined as:

N=\frac{eq_{solute}}{V_{solution}}

Since the sulfuric acid is the solute, and we already have the volume of the solution (500 mL) but we need it in liters (0.5 L, just divide into 1000), the equivalent grams of solute are given by:

eq_{solute}=N*V_{solution}=1\frac{eq}{L}*0.5L=0.5 eq

Now, since the sulfuric acid is diprotic (2 hydrogen atoms in its formula) 1 mole of sulfuric acid has 2 equivalent grams of sulfuric acid, so the mole-mass relationship is developed to find its required mass as follows:

m_{H_2SO_4}=0.5eqH_2SO_4(\frac{1molH_2SO_4}{2 eqH_2SO_4}) (\frac{98.1 g H_2SO_4}{1 mol H_2SO_4} )\\m_{H_2SO_4}=24.525 g H_2SO_4

Best regards.

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3 years ago
Which name is associated with a system of climate zones?
andrew11 [14]

Answer: A. Wladimir Koppen.

I hope that this helps you and good luck!!

~Sara

8 0
3 years ago
Select the correct answer.
Sladkaya [172]

Answer:

Explanation:

5 0
3 years ago
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