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creativ13 [48]
3 years ago
7

The image shows two spheres hung from a thin rope. The spheres do not affect each other.

Chemistry
1 answer:
jekas [21]3 years ago
8 0

Answer:

both spheres have a positive charge

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A compound is made of 49.31% C, 43.79% 0 and the rest hydrogen. The molar
Alexeev081 [22]

Explanation:

49.31 + 43.79 = 93.10

finding the percentage of hydrogen in the compound hence 100-93.10 =6.9

therefore 6.9 percent of hydrogen is present in the compound

assuming that the compound is in 100 g so the elements present would be 49.31g of C , 43.79g of O and 6.9g of H

no. of moles of C = given mass÷molar mass

= 49.31 ÷ 12

=<em><u>4</u></em><em><u>.</u></em><em><u>1</u></em><em><u>1</u></em><em><u> </u></em><em><u>m</u></em><em><u>o</u></em><em><u>l</u></em>

no of moles of O = givem mass ÷molar mass

=43.79÷ 16

=<em><u>2</u></em><em><u>.</u></em><em><u>7</u></em><em><u>3</u></em><em><u> </u></em><em><u>m</u></em><em><u>o</u></em><em><u>l</u></em>

no. of moles of H =6.9÷1

=<em><u>6</u></em><em><u>.</u></em><em><u>9</u></em><em><u> </u></em><em><u>m</u></em><em><u>o</u></em><em><u>l</u></em>

dividing the no. of moles of each element by the least count of the elemnt to get the ratio of the simple whole numbr

therefore

so by dividing we get 1:1:2 of C:O:H

the empirical formula is CH2O

empirical formula mass of CH2O IS

= (12)+(2×1)+(16)

= 12+2+16

=30 G/MOL

n= molar mass of the compound ÷ empirical formula mass of the compound

so, n= 146.1 ÷30

n=5

molecular formula = n×empirical formula

<em>m</em><em>o</em><em>l</em><em>e</em><em>c</em><em>u</em><em>l</em><em>a</em><em>r</em><em> </em><em>f</em><em>o</em><em>r</em><em>m</em><em>u</em><em>l</em><em>a</em><em>=</em><em> </em><em>5</em><em>×</em><em>C</em><em>H</em><em>2</em><em>O</em>

<em>m</em><em>o</em><em>l</em><em>e</em><em>c</em><em>u</em><em>l</em><em>a</em><em>r</em><em> </em><em>f</em><em>o</em><em>r</em><em>m</em><em>u</em><em>l</em><em>a</em><em>=</em><em>C</em><em>5</em><em>H</em><em>1</em><em>0</em><em>O</em><em>5</em><em> </em><em>(</em><em>r</em><em>i</em><em>b</em><em>o</em><em>s</em><em>e</em><em> </em><em>i</em><em>s</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>c</em><em>o</em><em>m</em><em>p</em><em>o</em><em>u</em><em>n</em><em>d</em><em>)</em>

8 0
3 years ago
4NH3+5O2-4NO+6H2O<br>how many moles of NH3 must react to produce 5.0 moles of NO?​
tresset_1 [31]

Answer: 5.0 moles

Explanation:

From the equation, we see that for every 4 moles of ammonia consumed, 4 moles of nitrogen monoxide are produced (we can reduce this to moles of ammonia consumed = moles of nitrogen monoxide produced).

This means that the answer is <u>5.0 mol</u>

7 0
2 years ago
Someone can help me with the question 3, please
pav-90 [236]
Answer ————
60.8 g ammonia
5 0
3 years ago
A certain quantity of ammonium nitrite is separated into its polyatomic components, and each polyatomic ion is then carefully tr
just olya [345]

Answer:

5000

Explanation:

you do stuff and more stuff

4 0
3 years ago
A canister has a fixed volume. If the pressure of the cannister is 1.5 atm at 25 Celsius, what is the new pressure if the temper
scoray [572]

Answer:

<u>d) 1.8 atm</u>

Explanation:

<u>According to Boyle's Law,</u>

  • P₁/T₁ = P₂/T₂

Here, we are given :

  1. <u>P₁ = 1.5 atm</u>
  2. <u>T₁ = 25°C = 298 K</u>
  3. <u>T₂ = 75°C = 348 K</u>

<u />

<u>Solving</u>

  • P₂ = P₁T₂/T₁
  • P₂ = 1.5 x 348 / 298
  • P₂ = 522/298
  • P₂ = <u>1.8 atm</u> (approximately)
3 0
2 years ago
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