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2 years ago

What is the definition of a Double Displacement Reaction?

Chemistry

2 answers:

fiasKO [112]2 years ago

4 0

Answer:

A double displacement is a type of chemical reaction that in which the reactant ions exchange places to form new products

Explanation:

I took the quiz

Slav-nsk [51]2 years ago

4 0

Answer:

When two different atoms or groups of atoms are exchanged, then it is a double displacement reaction.

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HELP ME PLEASE WILL GIVE MORE POINTS AND BRAINLIEST!!

Sedbober [7]

✅Show work regardless if student got answer correct or incorrect

q = mC∆T

q = (30.0g)(0.900J/goC)(50oC)

q = 1350 J

So, the right answer is 1350 J

IamSugarBee◽

7 0

2 years ago

what is the change in the velocity of the biker below as he travels from point b to point c ? ..... What is his acceleration fro

Furkat [3]

The change in the velocity = 4 m/s

Acceleration = 4 m/s²

<h3>Further explanation</h3>

Given

vo = initial velocity = 4 m/s

vf = final velocity = 8 m/s

t = 1 s

Required

The change in the velocity

Acceleration

Solution

the change in velocity =

$\tt vf-vo=8-4=4~m/s$

Acceleration = ratio of a change in velocity and the time

$\tt a=\dfrac{\Delta v}{t}= \dfrac{vf-vo}{t}$

Input the value :

$\tt a=\dfrac{4~m/s}{1~s}=4~m/s^2$

7 0

2 years ago

When 2.5 mol of O2 are consumed in their reaction, ________ mol of CO2 are produced

Vika [28.1K]

The given question is incomplete. The complete question is:

The combustion of propane (C3H8) in the presence of excess oxygen yields $CO_2$ and $H_2O$

$C_3H_8(g)+5O_2 (g)\rightarrow 3CO_2(g)+4H_2O (g)$

When only 2.5 mol of $O_2$ are consumed in order to complete the reaction, ________ mol of $CO_2$ are produced.

Answer: Thus when 2.5 mol of $O_2$ are consumed in their reaction, 1.5 mol of $CO_2$ are produced

Explanation:

The balanced chemical equation is:

$C_3H_8(g)+5O_2 (g)\rightarrow 3CO_2(g)+4H_2O (g)$

According to stoichiometry :

5 moles of $O_2$ produce = 3 moles of $CO_2$

Thus 2.5 moles of $O_2$ will produce = $\frac{3}{5}\times 2.5=1.5$ moles of $CO_2$

Thus when 2.5 mol of $O_2$ are consumed in their reaction, 1.5 mol of $CO_2$ are produced

4 0

2 years ago

How many of the following are found in 15.0 kmol of xylene (C8H10)? (a) kg C8H10; (b) mol C8H10; (c) lb-mole C8H10; (d) mol (g-a

77julia77 [94]

Answer:

a) 1592.4 kg C8H10

b) 15*10³ mol C8H10

c) 33.1 lb-mole

d) 1.2 *10^5 mol C

e) 1.5 * 10^5 mol H

f) 1.44 * 10^6 grams C

g) 1.52 * 10^5 grams H

h) 9.03*10^27 molecules C8H10

Explanation:

Step 1: Data given

Number of moles C8H10 = 15.0 kmol =15000 moles

Molar mass of C8H10 = 106.16 g/mol

Step 2: Calculate mass C8H10

Mass C8H10 = moles C8H10 * molar mass C8H10

Mass C8H10 = 15000 * 106.16 g/mol

Mass C8H10 = 1592400 grams = 1592.4 kg

Step 3: Calculate moles C8H10

15.0 kmol = 15*10³ mol C8H10

Step 4: Calculate lb-mol

15.0 kmol = 33.1 lb-mole

Step 5: Calculate moles of C

For 1 mol C8H10 we have 8 moles of C

For 15*10³ mol C8H10 we have 8* 15*10³ =1.2 *10^5 mol C

Step 6: Calculate moles H

For 1 mol C8H10 we have 10 moles of H

For 15*10³ mol C8H10 we have 10* 15*10³ = 1.5 * 10^5 mol H

Step 7: Calculate mass of C

Mass C = moles C * molar mass C

Mass C = 1.2 *10^5 mol C * 12 g/mol

Mass C = 1.44 * 10^6 grams

Step 8: Calculate mass of H

Mass H = moles H * molar mass H

Mass H = 1.5 *10^5 mol H * 1.01 g/mol

Mass C = 1.52 * 10^5 grams

Step 9: Calculate molecules of C8H10

Number of molecules = number of moles * number of Avogadro

Number of molecules = 15*10³ mol C8H10 * 6.022*10^23

Number of molecules = 9.03*10^27 molecules

8 0

2 years ago

Insects often get stuck in the sap of ancient trees. The sap along with the insect inside harden forming a fossil. What kind of

shepuryov [24]

Crystallization

This is because insects that usually get stuck in sap tend to harden or crystallize, so they cannot get out. That is why it is a crystallization.

6 0

3 years ago