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2 years ago

True or false: atoms are electrically neutral; that is they do not have a charge.

1 answer:

3 0

Its true, By definition, an atom is electrically neutral it has the same number of protons as it does electrons, plus some number of neutrons depending on the isotope

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The molar solubility of calcium sulfide in a 0.222 M sodium sulfide solution is:________-

timurjin [86]

Sorry I don’t get the question Buh I’m sure you’ll get it eventually

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2 years ago

Consider this reaction: KOH + HBr - KBr + H20 Which statement is most likely true about HBr?

Roman55 [17]

Answer: It turns blue litmus red

Explanation:

I just got it right on edge

7 0

2 years ago

Read 2 more answers

During a titration the following data were collected. A 50.0 mL portion of an HCl solution was titrated with 0.500 M NaOH; 200.

Travka [436]

Answer: The mass of HCl present in 500 mL of acid solution is 36.5 grams

Explanation:

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is HCl

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=1\\M_1=?M\\V_1=50.00mL\\n_2=1\\M_2=0.500M\\V_2=200.mL$

Putting values in above equation, we get:

$1\times M_1\times 50.00=1\times 0.500\times 200\\\\M_1=\frac{1\times 0.500\times 200}{1\times 50.00}=2M$

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

Molar mass of HCl = 36.5 g/mol

Molarity of solution = 2 M

Volume of solution = 500 mL

Putting values in above equation, we get:

$2mol/L=\frac{\text{Mass of solute}\times 1000}{36.5g/mol\times 500}\\\\\text{Mass of solute}=\frac{2\times 36.5\times 500}{1000}=36.5g$

Hence, the mass of HCl present in 500 mL of acid solution is 36.5 grams

4 0

2 years ago

25 points!!! please Which types of elements areconsidered neutraland Where are these types of elements found on the periodic tab

posledela

Elements which composed of an equal amount of three components protons, neutrons and electrons are considered neutral elements. example of neutral elements are hydrogen, helium, lithium and beryllium...

7 0

2 years ago

How many moles are in 395 grams of KMnO4 if the molar mass is 158 g/mole? please help me

Gala2k [10]

Answer:

I have no idea

Explanation:

I don’t know

8 0

2 years ago