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3 years ago

Write the net ionic equation for the reaction of zinc metal with aqueous iron(II) nitrate. Include physical states.

Chemistry

1 answer:

kotykmax [81]3 years ago

7 0

Answer:

Zn°(s) + Fe⁺²(aq) => Zn⁺²(aq) + Fe°(s)

Explanation:

Molecular Equation:

Zn°(s) + Fe(NO₃)₂(aq) => Zn(NO₃)₂(aq) + Fe°(s)

Ionic Equation:

Zn°(s) + Fe⁺²(aq) + 2NO₃⁻(aq) => Zn⁺²(aq) + 2NO₃⁻(aq) + Fe°(s)

Net Ionic Equation: => Drop NO₃⁻ as spectator ion

Zn°(s) + Fe⁺²(aq) => Zn⁺²(aq) + Fe°(s)

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Dna is made out of two strands of nucleotides that form a twisted ladder shape called a double helix. all of the following are p

Andrews [41]

Answer:

C.) Chromosomes

Explanation:

Nucleotides are made up of three parts: a deoxyribose sugar, a phosphate, and a nitrogen base.

Chromosomes are long, condensed strands of DNA.

7 0

2 years ago

Question 11 (1 point)

iren2701 [21]

Blue to red is acidic, red to blue is basic and no change is neutral.

6 0

3 years ago

Given LiCl, NaCl, KCl, MgCl2, and SrCl2, arrange the compounds in order of increasing lattice energy.

Oksanka [162]

Answer:- $KCl$

Explanations:- Lattice energy depends on two factors, charge and size.

High charge and small size gives higher lattice energy where as low charge and bigger size gives lower lattice energy.

in LiCl, NaCl and KCl, the anion is same and also the charges for Li, Na and K are also same. The deciding factor here is the size of cations. Since the size increases as we move down a group, the order of size of these three atoms is Li<Na<K.

The order of lattice energy is exactly opposite as it's increases as the size decreases.

Now, if we look at magnesium chloride and strontium chloride then again the anion is common but the metals have higher charge as compared to the alkali metals(Li, Na and K). So, lattice energy values must be higher for these two compounds. If we compare Mg and Sr then size of Mg is smaller and so the lattice energy would be greater for this.

Hence, the increasing order of lattice energy is $KCl$ .

4 0

3 years ago

Read 2 more answers

air is trasferred from 75 L tank where the pressure is 125 psi and the temperature is 288 K to a tire with a volume. of 6.1 L an

just olya [345]

Answer:

4.7K

Explanation:

Given parameters:

Initial volume = 75L

Initial pressure = 125psi

to atm gives 8.5atm

Initial temperature = 288K

New volume = 6.1L

New pressure = 25psi

to atm gives 1.7atm

Unknown:

New temperature = ?

Solution:

To solve this problem, we use the combined gas law which is given below:

$\frac{P1 V1}{T1}$ = $\frac{P2 V2}{T2}$

P, V and T are pressure, volume and temperature

1 and 2 are initial and new states

$\frac{8.5 x 75}{288}$ = $\frac{1.7 x 6.1}{T2}$

T2 = 4.7K

5 0

3 years ago

To which group does copper belong?

Lostsunrise [7]

Answer:

d. Transition metal

Explanation:

A transition metal is an element which has an atom or forms an ion with a partially-filled d-subshell.

As we can see from the electronic configuration of Copper 2+ ion, Cu²⁺:

$_{27}Cu^{2+} = 1s^2\space\ 2s^2 \space\ 2p^6 \space\ 3s^2 \space\ 3p^6 \space\ 3d^9$ ,

copper forms an ion with an incomplete d-subshell that contains 9 electrons; therefore copper is a transition metal.

• Option a. is wrong because copper is not a metalloid. Metalloids have characteristics of both metals and non-metals; copper only has metallic properties.

• Option b. is wrong because 'alkaline earth metals' are the elements in Group 2 of the periodic table; copper is in Group 11.

• Option c. is wrong because 'alkali metals' are in Group 1 of the periodic table.

3 0

2 years ago