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2 years ago

WHAT EQUATION REPRESENTS A SINGLE REPLACEMENT REACTION

Chemistry

1 answer:

mart [117]2 years ago

7 0

A single replacement reaction can be represented by the equation AB + C = AC + B

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Which is heavier einsteinium (Es) or europium (Eu)

SVETLANKA909090 [29]

I think the answer is einsteinium is the heavier one here.

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3 years ago

Pick 1 answer, please help!

olga nikolaevna [1]

Answer:

Explanation:

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2 years ago

Read 2 more answers

A car traveling at a constant speed travels 175 miles in four hours. How many minutes will it take for the car to travel 1000 fe

elena-14-01-66 [18.8K]

It takes 0.26 minutes to travel 1000 feet

Solution:

Given that car traveling at a constant speed travels 175 miles in four hours

Distance = 175 miles

Time taken = 4 hours

Convert the units to feet and minute

Given that,

1 mile = 5280 feet

175 miles = 5280 x 175 feet = 918720 feet

Also we know that,

1 hour = 60 minutes

4 hours = 60 x 4 minutes = 240 minutes

Thus, we got,

Distance = 918720 feet

Time taken = 240 minutes

Find the speed of car

Speed is given by formula:

$speed = \frac{distance}{time}$

$speed = \frac{918720}{240} = 3828$

Thus speed of car is 3828 feet per minute

How many minutes will it take for the car to travel 1000 feet?

Let "x" be the minutes needed for 1000 feet

speed of car is 3828 feet per minute

1 minute = 3828 feet

x minute = 1000 feet

This forms a proportion. We can solve by cross multiplying

$x \times 3828 = 1000 \times 1\\\\x = \frac{1000}{3828}\\\\x = 0.26$

Thus it takes 0.26 minutes to travel 1000 feet

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3 years ago

Use the Lewis model to determine the formula for the compound that forms from each pair of atoms.

Oksi-84 [34.3K]

Answer:

Explanation:

K is 1+ & I is 1- so we need 1 of each to balance out the compound.

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2 years ago

When ammonium chloride is added to water and stirred, it dissolves spontaneously and the resulting solution feels cold. Without

d1i1m1o1n [39]

When ammonium chloride NH4Cl is added to water and stirred, it dissolves spontaneously (this is the basis for ΔG) for and the resulting solution feels cold (endothermic, the basis for ΔH). Without doing any calculations, we can easily deduce the signs of ΔG, ΔH, and ΔS for this process based on the observations.

ΔG < 0 (it is spontaneous)
ΔH < 0 (because the process is endothermic - it absorbs energy)
ΔS > 0 (entropy increases because of the dissolution of NH4Cl in water

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2 years ago