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astra-53 [7]
3 years ago
9

Polar molecules have an equal number of positive and negative particles. True or false

Chemistry
2 answers:
Naddik [55]3 years ago
7 0

Yes it does have an equal number

vivado [14]3 years ago
6 0

Answer:

true

Explanation:

You might be interested in
How many moles of water are formed from 0.65 moles of oxygen?
sleet_krkn [62]

Answer:

two moles of water

hope this helps

7 0
3 years ago
Balance the equation:2Na+3H2O-2NaOH+H2​
aleksandrvk [35]

Answer:

2Na + 2H2O → 2NaOH + H2

Explanation:

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products.

7 0
3 years ago
4. A 0.51 kg solution contains 87 mg of potassium iodide. Calculate the W/W concentration
anzhelika [568]

Taking into account the definition of percentage composition, the percent composition of potassium iodide in this sample is 0.017%.

<h3>Definition of percent composition </h3>

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

To calculate the percentage of composition, it is necessary to know the mass of the element in a known mass of the compound.

<h3>Percentage Composition in this case</h3>

In this case, you know that a 0.51 kg (or 510000 mg, being 1 kg= 1000000 mg) solution contains 87 mg of potassium iodide.

Dividing the mass amount of potassium iodide present in the compound by the mass of the sample and multiplying it by 100 to obtain a percentage value, the percentage composition of potassium iodide is obtained:

percentage composition of potassium iodide=\frac{87 mg}{510000 mg} x100

<u><em>percentage composition of potassium iodide= 0.017%</em></u>

Finally, the percent composition of potassium iodide in this sample is 0.017%.

Learn more about percent composition:

brainly.com/question/24201923

brainly.com/question/9779410

brainly.com/question/17030163

#SPJ1

3 0
2 years ago
A bar of copper has a mass of 216g and a volume of 24cm^3. What is the density of copper?
7nadin3 [17]

Answer:

<h2>The answer is 9 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 216 g

volume = 24 cm³

The density is

density  =  \frac{216}{24}   \\

We have the final answer as

<h3>9 g/cm³</h3>

Hope this helps you

3 0
3 years ago
0.44 mL/min to microliters per second
SashulF [63]

Answer:

7 μl /s

Explanation:

Given data:

0.44 mL/min

μl /s = ?

Solution:

First of all we will convert the mL/min to mL/s.

we will divide the given value by 60.

0.44/60

0.007 mL/s

Now we will convert the mL/s to μl /s.

we will multiply the value with 1000.

0.007 × 1000

7 μl /s

7 0
3 years ago
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