A particle has 5 protons, 6 neutrons, and 5 electrons. What is its net charge.

Answers

Answer 1

Answer: It would have a zero charge because it is a neutral atom. The number of electrons which is a negative charge is equal to the number of protons which is positive, they will cancel each other out hence meaning it will become neutral

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Determine how many grams of KI are required to produce 1.2g of Pbl2-A) 0.43g
B) 0.86g
C) 1.67g
D) 3.33g

Answers

Molar mass KI = 166.0028 g/mol and Pbl₂ = 461.0089 g/mol

2 Kl + Pb(NO₃)₂ ------> 2 KNO₃ + Pbl₂

2 x 166.0028 g ---------> 461.0089 g
? g KI -------------> 1.2 g

Mass KI = 1.2 x 2 x 166.0028 / 461.0089

Mass KI = 398.40672 / 461.0089

Mass KI = 0.86 g

Answer B

hope this helps!

What is a covalent bond?

Answers

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. (hope this helps.)

Answer:

Explanation:

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C2H5OH is able to dissociate in water to conduct an electric current. This compound could be classified as

Answers

The fact that when in solution C₂H₅OH conducts electricity means that it is an electrolyte so you can automatically cross out A and C (the definition of an electrolyte is a substance that will conduct electricity when in a solution). I think the correct answer is B due to the -OH group (the - indicates a covalent bond) which allows the molecule to give up a proton (H⁺).
I hope this helps. Let me know if anything is unclear.

PLEASE HELP ME!!! AAHH IM TRAPPED

Answers

what exactly do you need help with?Your question is quite open ended.

Answer:

you got out?

Explanation:

In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) 2 NaBr(aq) PbBr2(s) 2 NaNO3(aq) The molar mass of NaBr is 102.9 grams and that of NaNO3 is 85 grams

Answers

Answer : The mass of $NaBr$ is, 295.323 grams

Solution :

First we have to calculate the moles of $NaNO_3$ .

$\text{Moles of }NaNO_3=\frac{\text{Mass of }NaNO_3}{\text{Molar mass of }NaNO_3}=(244g)/(85g/mole)=2.87moles$

Now we have to calculate the moles of NaBr.

The balanced chemical reaction is,

$Pb(NO_3)_2(aq)+2NaBr(aq)\rightarrow PbBr_2(s)+2NaNO_3(aq)$

From the balanced reaction we conclude that

As, 2 moles of $NaNO_3$ react with 2 moles of $NaBr$

So, 2.87 moles of $NaNO_3$ react with 2.87 moles of $NaBr$

Now we have to calculate the mass of NaBr.

$\text{Mass of }NaBr=\text{Moles of }NaBr* \text{Molar mass of }NaBr$

$\text{Mass of }NaBr=(2.87mole)* (102.9g/mole)=295.323g$

Therefore, the mass mass of $NaBr$ is, 295.323 grams

An unknown substance turns blue litmus paper to red. Which additional test could be used to confirm the substance’s identity? It should turn phenolphthalein from colorless to pink because it is a base. It should turn phenolphthalein from pink to colorless because it is a base. It should turn methyl orange to orange because it is an acid. It should turn methyl orange to red because it is an acid.

Answers

The substance that turns blue litmus red should turn methyl orange to red because it is an acid.

What is an acid?

An acid is a substance that produces hydrogen ions as the only positive ions when dissolved in water.

Properties of acid include :

acids turn blue litmus red
are corrosive
are sour in taste

Therefore, the substance that turns blue litmus red is an acid:

It should turn methyl orange to red because it is an acid.

Learn more about acids at: brainly.com/question/25148363

Blue litmus paper turning red means that the solution where the litmus paper was submerged is an acidic solution with a pH of less than 7. Another verification of the nature of the solution is the turning to red of methyl orange in acidic solutions. The answer then is D.

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