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Otrada [13]
3 years ago
14

Tina's calculations of the tarantula found that the spider was able to cover 20 centimeters in 5 seconds ,what was the average s

peed of the spider ?
Chemistry
1 answer:
12345 [234]3 years ago
7 0

4 centimetres per second

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When convex mirrors are used for security purposes, the images they form
konstantin123 [22]

Answer:false

Explanation:

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3 years ago
This is an example of a mixture that will separate______.
devlian [24]

B is the correct answer

6 0
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What are some examples of gases at room temperature
Lady_Fox [76]

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Explanation:

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3 years ago
What was the resulting molarity of your primary standard solution of potassium iodate kio3?
melamori03 [73]
Missing question: 0,535 gram of KIO₃ dissolved in 250 mL of de-ionized water to <span>make primary standard solution.
m(</span>KIO₃) = 0,535 g.
V(KIO₃) = 250 mL ÷ 1000 mL/L = 0,25 L.
n(KIO₃) = m(KIO₃) ÷ M(KIO₃).
n(KIO₃) = 0,535 g ÷ 214 g/mol.
n(KIO₃) = 0,0025 mol.
c(KIO₃) = n(KIO₃) ÷ V(KIO₃).
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8 0
3 years ago
How many Br atoms are in 1.98 g of Br?
Mkey [24]

Answer:

1.5 x 10²²atoms

Explanation:

Given parameters:

Mass of Br = 1.98g

Unknown:

Number of atoms

Solution:

A mole of a substance is the amount of substance contained in the avogadro's number of particles.

To solve this problem, we must first find the number of moles present in the given mass of the Br atom:

       Number of moles = \frac{mass}{molar mass} =  \frac{1.98}{80}  = 0.025mole.

Now we know that:

       1 mole = 6.02 x 10²³

      0.025 mole = 0.025 x 6.02 x 10²³ = 1.5 x 10²²atoms

7 0
3 years ago
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