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soldi70 [24.7K]
2 years ago
10

Would the plastic have a positive charge, negative charge, or no charge? *

Chemistry
1 answer:
HACTEHA [7]2 years ago
7 0

Answer:

Then, when students pulled the plastic through their fingers, electrons from their skin got onto the plastic. Since the plastic has more electrons than protons, it has a negative charge.

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Using this equation, m1v2=m2v2 , calculate the diluted molarity of 100 mL of a 0.5 M solution when 50 mL of
geniusboy [140]

The molarity of the diluted solution is 0.33 M

From the question given above, the following data were obtained:

Molarity of stock solution (M₁) = 0. 5 M

Volume of stock solution (V₁) = 100 mL

Volume of diluted solution (V₂) = 100 + 50 = 150 mL

<h3>Molarity of diluted solution (M₂) =? </h3>

The molarity of the diluted solution can be obtained by using the dilution formula as illustrated below:

<h3>M₁V₁ = M₂V₂</h3>

0.5 × 100 = M₂ × 150

50 = M₂ × 150

Divide both side by 150

M₂ = 50 / 150

<h3>M₂ = 0.33 M</h3>

Therefore, the molarity of the diluted solution is 0.33 M

Learn more: brainly.com/question/24625656

8 0
3 years ago
Genotypes and Phenotypes
Citrus2011 [14]
I don’t really know this but I think
8 0
3 years ago
a 182.4g sample of germanium-66 is left undisturbed for 22.5 hours. At the end of that period, only 5.70g remain. What is the ha
Nana76 [90]

Answer:

Approximately 4.5\; \text{hours}.

Explanation:

Calculate the ratio between the mass of this sample after 22.5\; \text{hours} and the initial mass:

\displaystyle \frac{5.70\; \rm g}{182.4\; \rm g} \approx 0.03125.

Let n denote the number of half-lives in that 22.5\; \text{hours} (where n\! might not necessarily be an integer.) The mass of the sample is supposed to become (1/2) the previous quantity after each half-life. Therefore, if the initial mass of the sample is 1\; \rm g (for example,) the mass of the sample after \! n half-lives would be {(1/2)}^{n}\; \rm g. Regardless of the initial mass, the ratio between the mass of the sample after n\!\! half-lives and the initial mass should be {(1/2)}^{n}.

For this question:

{(1/2)}^{n}} = 0.03125.

Take the natural logarithm of both sides of this equation to solve for n:

\ln \left[{(1/2)}^{n}}\right] = \ln (0.03125).

n\, [\ln(1/2)] = \ln (0.03125).

\displaystyle n = \frac{\ln(0.03125)}{\ln(1/2)} \approx 5.

In other words, there are 5 half-lives of this sample in 22.5\; \text{hours}. If the length of each half-life is constant, that length should be (1/5) \times 22.5\; \text{hours} = 4.5\; \text{hours}.

4 0
3 years ago
How many moles of water are produced from 0.500 moles of oxygen gas?
solmaris [256]
As far as I know NONE.....
Explanation:
Sodium peroxide can be thermolyzed to give dioxygen gas...
N
a
2
O
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(
s
)
+
Δ
→
N
a
2
O
(
s
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+
1
2
O
2
(
g
)
↑
⏐
⏐
⏐

But with water, we simply get an acid base reaction....
N
a
2
O
2
(
s
)
+
2
H
2
O
(
l
)
→
2
N
a
O
H
(
a
q
)
+
H
2
O
2
(
a
q
)
...
6 0
3 years ago
Which statement best relates an emprical formula with a molecular formula​
netineya [11]
The empirical formula of a substance is just the molecular formula simplified
5 0
4 years ago
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