A charged particle made up of several non-metallic atoms joined together is a(n) Select one: a. covalent ion
b. polyatomic ion
c. multivalent ion
d. electron ion

Answers

Answer 1

Answer:

Answer:

The correct answer is option b, that is, polyatomic ion.

Explanation:

A molecular ion also called polyatomic ion refers to a charged chemical species comprising two or more atoms bonded covalently with each other. The polyatomic ions comprise two or more non-metallic atoms. An example of a polyatomic ion is an ion of nitrate that comprises one atom of nitrogen and three atoms of oxygen. As the atoms in a polyatomic ion are bonded covalently, they are considered to possess a single charged unit.

Answer 2

Answer: It would be B. A polyatomic ion. Poly means many, while atomic refers to atoms more specifically the nature or category of these atoms is that they are non metallic ones, or basically nonmetal atoms. All of these nonmetallic atoms are joined together through covalent bonds and altogether they possess a unique charge. An example of a polyatomic ion would be sulphate or (SO4)^-3.

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Why does hybridization of orbitals occur?

Answers

Hybridization of orbitals is the concept of incorporation atomic orbitals into new hybrid orbitals appropriate for the pairing of electrons to form chemical bonds in valence bond theory.

What is the volume of 2 mol of chlorine gas at STP?

Answers

Answer:

Volume of 2 mol of chlorine gas at STP is 44.8 L

Explanation:

Let us assume chlorine gas behaves ideally.

According to law of ideal gas- PV=nRT

where P is pressure of gas, V is volume of gas, n is number of moles of gas, R is gas constant and T is temperature in Kelvin.

At STP, P is 1 atm and T is 273 K

Here n=2 and R=0.082 L.atm/mol.K

So $V=(nRT)/(P)=(2* 0.082* 273)/(1)L=44.8 L$

Hence volume of chlorine gas at STP is 44.8 L

The conversion factor for volume at STP is $\frac {1mol}{22.4L}$ or \frac {22.4L}{1mol}. Since we want volume, we would use \frac {22.4L}{1mol}. We conclude with the following calculations:

$2molCl_(2)*\frac {22.4LCl_(2)}{1molCl_(2)} = 44.8L Cl_(2)$

The answer is 44.8L Cl2

A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope. How many half-lives have passed since the sample originally formed?

3
4
8
16

Answers

The answer is 3.

The relation between number of half-lives (n) and decimal amount remaining (x) can be expressed as:

$(1/2) ^(n) =x$

We need to calculate n, but we need x to do that. To calculate what percentage of a radioactive species would be found as daughter material, we must calculate what amount remained:
1.28 - 1.12 = 0.16

If 1.28 is 100%, how much percent is 0.16:
1.28 : 100% = 0.16 : x
x = 12.5%
Presented as decimal amount:
x = 0.125

Now, let's implement this in the equation:

$(1/2) ^(n) =0.125$

Because of the exponent, we will log both sides of the equation:
$n * log(1/2) = log(0.125)$
$n = (log(0.125))/(log(1/2))$
$n = (log(0.125))/(log(0.5))$
$n= (-0.903)/(-0.301)$
$n = 3$

Therefore, 3 half-lives have passed since the sample originally formed.

Answer:

Explanation:

Help plz and can you plz use terms

Answers

I’m not sure but I hope yu get the right answer sorry

Which of the following compounds will experience dipole-dipole forces of attraction? Cl2
NaCl
H2S
C2H4

Answers

NaCl and H2S will experience dipole-dipole interaction because they are permanently polarized.

NaCl and H2s are the answers

Solutions of aluminum nitrate and sodium sulfate react to form sodium nitrate and aluminum sulfate. Classify this reaction.2Al(NO3)3(aq) + 3Na2SO4(aq) → Al2(SO4)3(s) + 6NaNO3(aq)
A) Synthesis
B) Decomposition
C) Double Replacement
D) Single Replacement
I choose C was wondering if I was correct

Answers

C is the correct answer. Double displacement reaction, also called as metathesis, is a type of reaction wherein two compounds react to form new compounds. This case the cations and the anions of the reactants replace each other forming the new compounds.

Answer:

C: Double Replacement

Explanation:

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