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Elden [556K]
3 years ago
14

How can you move a object without making contact?

Chemistry
1 answer:
nadya68 [22]3 years ago
6 0

Answer:

The Force

Explanation:

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A 6.40 g sample of a compound is burned to produce 8.37 g CO_2, 2.75 g H_2O, 1.06 g N_2, and 1.23 g SO_2. What is the empirical
LuckyWell [14K]

The empirical formula :

C₁₀H₁₆N₄SO₇

<h3>Further explanation</h3>

Given

6.4 g sample

Required

The empirical formula

Solution

mass C :

= 12/44 x 8.37 g

= 2.28

mass H :

= 2/18 x 2.75 g

= 0.305

mass N = 1.06

mass S :

= 32/64 x 1.23

= 0.615

mass O = 6.4 - (2.28+0.305+1.06+0.615) = 2.14 g

Mol ratio :

= C : H : N : S : O

= 2.28/12 : 0.305/1 : 1.06/14 : 0.615/32 : 2.14/16

= 0.19 : 0.305 : 0.076 : 0.019 : 0.133 divided by 0.019

= 10 : 16 : 4 : 1 : 7

The empirical formula :

C₁₀H₁₆N₄SO₇

3 0
3 years ago
Which of the following is an example of a chemical change? A. melting solid gold B. burning hydrogen gas C. breaking a sheet of
cestrela7 [59]
The answer is B. Burning hydrogen gas

5 0
3 years ago
The sum of all percent abundances for magnesium is equal to 100. explain why this is reasonable.
kow [346]
Elements occur naturally in different forms called isotopes. These are the same atoms with the same number of protons but has different number of neutrons. Almost all elements exist in nature as such. The amounts of these isotopes are expressed in terms of percent abundances and since it is in a percentage units, the sum of all the abundances should equate to 100 percent or else the calculation is wrong. This is not true onlt for magnesiun but with all of the elements. The atomic mass of these elements also depends on the percent abundances of the isotopes since it is a weighted average value of the individual masses of the isotopes.
7 0
3 years ago
Read 2 more answers
Pls fast pls due today pls pls I don’t wanna fail
BabaBlast [244]

Answer:

2:true

3: true

4:false

5: true

Explanation:

6 0
3 years ago
1. Which of the following correctly represents a balance chemical equation? (a) NaCl + 2H2O → 2NaOH + 2Cl2 + H2 (b) 2NaCl+H2O →
butalik [34]

Answer:

thx sa points

Explanation:

8 0
3 years ago
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