Directions: Write the name of the type of chemical reaction in the space provided.(Can be Synthesis Reaction, Decomposition Reaction, Combustion, Single Displacement Reaction or Double Displacement Reaction)

Answers

Answer 1

Answer:

The given reactions are combination reaction, decomposition reaction, neutralization reaction, displacement reaction and double displacement reaction.

What is displacement reaction?

A displacement reaction is a chemical process during which a one more reactive element being replaced from its compound by a less reactive element.

What is combination reaction?

When A combination reaction occurs when one or more elements or compounds react together to generate a new chemical. Equations of the following kind are used to depict such reactions.

X+ Y→XY

6) $Fe}(s)+3{O}_(2)(g)$ → $2{Fe}_(2) {O}_(3)(s)$ , this reaction is a kind of combination reaction reaction.

7) ${Zn}_(2)(s)+2 {HCl} (aq)$ → ${ZnCl}_(2)(a q)+{H}_(2)(g)$

This reaction is a kind of displacement reaction.

8) ${MgCO}_(3)(a q)+2 {HCl}(a q)$ → ${MgCl}_(2)(a q)+{H}_(2) {O}(l)+{CO}_(2)(g)$ .

This reaction is a kind of combustion reaction.

9) ${NiCl}_(2)(s)$ → ${Ni}(s)+{Cl}_(2)(g)$ .

This reaction is a kind of decomposition reaction.

10) ${C}(s)+6 {H}_(2)(g)+{O}_(2)(g)$ → $2 C}_(2) {H}_(6) {O}(s)$ .

This reaction is a kind of combination reaction.

11) $\mathrm{C}_(12) \mathrm{H}_(22) \mathrm{O}_(11)(s) \rightarrow 12 \mathrm{C}(s)+11 \mathrm{H}_(2) \mathrm{O}(\mathrm{g})$ .

This reaction is a kind of dissociation reaction.

12) $2 \mathrm{LiI}(a q)+\mathrm{Pb}\left(\mathrm{NO}_(3)\right)_(2)(a q) \rightarrow 2 \mathrm{LiNO}_(3)(a q)+\mathrm{PbI}_(2)(s)$ .

This reaction is a kind of double displacement reaction.

13) $\mathrm{CdCO}_(3)(s) \rightarrow \mathrm{CdO}(s)+\mathrm{CO}_(2)(g)$ .

This reaction is a kind of decomposition reaction

14) $\mathrm{Cl}_(2)(g)+2 \mathrm{KBr}(a q) \rightarrow 2 \mathrm{KCl}(a q)+\mathrm{Br}_(2)(g)$ .

This reaction is a kind of single displacement reaction.

15) $\mathrm{BaCl}_(2)(a q)+2 \mathrm{KIO}_(3)(a q) \rightarrow \mathrm{Ba}\left(\mathrm{IO}_(3)\right)_(2)(s)+2 \mathrm{KCl}(a q)$ .

This reaction is kind of double displacement reaction.

16) $2 \mathrm{Mg}(s)+\mathrm{O} 2(\mathrm{~g}) \rightarrow 2 \mathrm{MgO}(s)$ .

This reaction is a kind of combination reaction.

17) $AgNO_(3) (aq) +KI(aq)$ → $KI(aq) + KNO_(3)(aq)$ .

This reaction is a kind of double displacement reaction.

18) $2 \mathrm{Li}(s)+\mathrm{H}_(2) \mathrm{O}(b) \rightarrow 2 \mathrm{LiOH}(a q)+\mathrm{H}_(2)(g)$ .

This reaction is a kind of single displacement reaction.

19) $\mathrm{C}(\mathrm{s})+\mathrm{O}_(2)(\mathrm{~g}) \rightarrow \mathrm{CO}_(2)(\mathrm{~g})$ .

This reaction is a kind of combination reaction.

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Answer 2

Answer:

combination reaction,decombinationreaction,displacementreaction,decombinatioreaction,neutrilizatioreaction

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Which solution when mixed with a drop of bromthymol blue will cause the indicator to change from blue to yellow 1) 0.1 M HCl. 2) 0.1 M CH3OH. 3) 0.1 M NH3. 4) 0.1 M NaOH

What is the most likely reason that nonmetals are electrical insulators?

Answers

Because they cant carry an electrical current so instead they hold it. Holding it like quarantine type.

Answer: the answer is B

Explanation:

Because they have to hold them to fill in their spaces.

The energy needed to get a reaction started is thea. enzyme energy.
b. activation energy.
c. catalyst energy.
d. chemical energy.

Answers

Activation energy is the energy needed to start a chemical reaction. The correct answer to the given question is option b. activation energy.

The energy needed to get a reaction started is called the activation energy. It is the minimum amount of energy required for a chemical reaction to occur. Activation energy is needed to break the existing bonds in reactant molecules and form new bonds to produce product molecules.

The correct answer to the given question is option b. activation energy.

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The energy needed to get a reaction started is the activation energy.

A catalyst speeds up a reaction, as well as an enzyme, and chemical energy is just a form of energy.

Answer: Activation energy

For an experiment, you place 15 g of ice with a temperature of -10 C into a cup and labela. You also place 25 g of ice at the same temperature into another cup and label it
b. Which of the following statements is true?
A) The average kinetic energy of the ice in cup A is less than that in cup
b.
B)The average kinetic energy of the ice in cup A is greater than that cup in
b.
C)The average kinetic energy of the ice cup A is equal to that in cup
b.
D)The average kinetic energies of the ice in cup A and the ice in cup B are not comparable.

Answers

Average kinetic energy is given by the formula:

KE(average) = 3/2*k*T

where k = Boltzmann constant = 1.38*10⁻²³ J/K

T = temperature in Kelvin (K)

Thus, the average KE is dependent only on temperature and independent of mass.

Since the temp in Cup A and B remains the same, the average KE will also be the same.

Ans C)

The correct answer is c. Temperature is the average kinetic energy of a sample so if two samples have the same temperature they will also have the same average kinetic energy. I hope this helps. Let me know if anything is unclear.

What is the volume of 0.30 M NaOH(aq) neededto completely neutralize 15.0 milliliters of
0.80 M HCl(aq)?
(1) 3.6 mL (3) 20. mL
(2) 5.6 mL (4) 40. mL

Answers

Answer: 4) 40 ml

Solution :

According to the neutralization law,

$M_1V_1=M_2V_2$

where,

$M_1$ = molarity of NaOH solution = 0.30 M

$V_1$ = volume of NaOH solution = ?

$M_2$ = molarity of HCl solution = 0.80 M

$V_2$ = volume of HCl solution = 15 ml

Now put all the given values in the above law, we get the volume of NaOH solution.

$(0.30M)* V_1=(0.80M)* (15ml)$

$V_1=40ml$

Therefore, the volume of 0.30 M NaOH required to neutralize 15 ml of 0.80 M HCl is 40 ml.

Final answer:

The volume of 0.30 M NaOH(aq) needed to neutralize 15.0 milliliters of 0.80 M HCl(aq) is 40 milliliters.

Explanation:

The volume of 0.30 M NaOH(aq) needed to neutralize 15.0 milliliters of 0.80 M HCl(aq) can be determined using the concept of stoichiometry and the balanced equation for the reaction between NaOH and HCl. The balanced equation is:

NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)

From the balanced equation, we can see that 1 mole of NaOH reacts with 1 mole of HCl. Therefore, the number of moles of HCl in 15.0 milliliters of 0.80 M HCl solution can be calculated as:

Moles of HCl = Volume (in liters) × Molarity = 0.015 liters × 0.80 moles/liter = 0.012 moles

Since 1 mole of NaOH reacts with 1 mole of HCl, we need 0.012 moles of NaOH. The volume of 0.30 M NaOH solution can be determined by rearranging the equation:

Volume (in liters) = Moles / Molarity = 0.012 moles / 0.30 moles/liter = 0.04 liters = 40 milliliters

Therefore, the volume of 0.30 M NaOH(aq) needed to completely neutralize 15.0 milliliters of 0.80 M HCl(aq) is 40 milliliters.

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Which pure substance can be classified as an element?
-H2
-NO3
-NaCl
-H2SO4

Answers

An element is made up of only one kind of atom.
So H2 is the element. Why? because H2 is made up of only one kind of atom, hydrogen atoms.

- Just as a side note, compounds (made up of atoms from more than one element) are also considered pure substances.

Answer: H2

Explanation: i took the quizz

When the first periodic table of the elements was published, the elements were arranged by atomic mass. Although several elements seemed out of order, later discoveries showed the order to be correct. Which event most likely helped the development of the periodic table?

Answers

Answer;

New information changed the understanding of the atom’s structure.

Explanation;

Mendeleev is know as the Father of the Modern Periodic Table. His table allowed scientists to predict the existence of elements that hadn't been discovered.
Mendeleev saw that when the elements were arranged in order of increasing atomic mass, those that had similar properties occurred in a repeating pattern. He predicted that elements yet to be found would fill the gaps in his table.