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Anestetic [448]
2 years ago
8

Doing another onee! 50 points for answering thiss!

Chemistry
2 answers:
otez555 [7]2 years ago
7 0

Answer:

why u was giving free point and I think u have great day

MaRussiya [10]2 years ago
3 0

Answer:

are you increasing your followers

Explanation:

if yes then I will follow you

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Pasteurization, vaccines against antrax and rabies, discovered the germ fermentation
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How many grams of O2(g) are needed to completely burn 15.6 g of C3H8(g)?
alexdok [17]
15.6gC3H8*44.1gC3H8*32gO2=11.32
7 0
3 years ago
121) The sugar sucrose has 12 carbon atoms, 22 hydrogen atoms and 11 oxygen
mart [117]

Answer:

Explanation:

121) The sugar sucrose has 12 carbon atoms, 22 hydrogen atoms and 11 oxygen

atoms. How would this be written?

A) Co12H22O1  [Co is cobalt]

<u><em>B) CI2H22011</em></u>     [Yes]

C) C6H1206       [6 C atoms]

D) CacH1206     [Ca is calcium]

122) How are the elements organized on the periodic table?

A) Atomic Mass  [Yes, from lightest to heaviest]

B) Element Name

C) Symbol

D) No Set Organization

123) Which of the following elements would be considered a compound?

A) CH     [Yes, two or more elements combined]

B) Si       [No]

C)F         [No]

D) O6     [No, multiple atoms, but same element]

124) The formula for water is H2O meaning there are 2 Hydrogen atoms and 1

Oxygen. What is the atomic mass of one molecule to the nearest hundredth?

A) 15.99  

B) 16.99

C) 17.99     [Yes, 16 + 2*1 = 18]

D) 18.99

4 0
1 year ago
What volume of 0.4567 m h2so4 is required to neutralize 30.00 ml of 0.3210 m naoh?
sertanlavr [38]
Answer is: volume of H₂SO₄ is 42.1 mL.<span>
Chemical reaction: H</span>₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O.<span>
c(H</span>₂SO₄) = 0,4567 M = 0,4567 mol/L.<span>
V(NaOH) = 30 mL </span>÷ 1000 mL/L <span>= 0,03 L.
c(NaOH) = 0,321 M = 0,321 mol/L.
n(NaOH) = c(NaOH) · V(NaOH).
n(NaOH) = 0,321 mol/L · 0,030 L.
n(NaOH) = 0,00963 mol.
From chemical reaction: n(H</span>₂SO₄) : n(NaOH) = 1 : 2.<span>
n(H</span>₂SO₄) = 0,01926 mol.<span>
V(H</span>₂SO₄) = n(H₂SO₄) ÷ c(H₂SO₄).<span>
V(H</span>₂SO₄) = 0,01926 mol ÷ 0,4567 mol/L.<span>
V(H</span>₂SO₄<span>) = 0,0421 L = 42,1 mL.</span>
3 0
3 years ago
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