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4 years ago

10

Acid is added to a beaker containing crushed marble. what effect does stirring this mixture have on the system?

1 answer:

dexar [7]4 years ago

7 0

Stirring promotes the reaction by exposing all of the unreacted region of the marble to the acid. Moreover, mixing increases the degree of homogenity within the reaction mixture, meaning the reaction is carried out evenly through out rather than faster in some regions while slower in others.

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3 years ago

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According to le chatelier's principle, increasing the pressure of the system shown below will shift equilibrium to the left (tow

jasenka [17]

N2(g) + 3H2(g) =2NH3(g)

Number of moles of reactants > product...
Therfore if pressure is increased.
Equilibrium is disturbed according to LCP....
Equilibrium shift to the right (product)
......
If you want to understant the fundamental concept:

Take for example 2A + 3B = 4C
Reactant: 5 moles (5 volumes)
Product: 4 moles (4 volumes)

When pressure of a gas is increased, volume decreases!
(Vice-versa)

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This happens when number of paeticles decreases as equilibrium shift forward because the forward reaction is accompanied by a decrease in number of particles (5 to 4)

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3 years ago

Help asap <br> help show work <br> I need an A

MrRissso [65]

Answer: 17 (a) 360,000 ms 18 (a) 0.245 s

(b) 4.800 kg (b) 500 cm

(c) 560.0 dm (c) 68.00 m

(d) 72,000 mg (d) 0.025 Mg

<u>Explanation:</u>

Use the following table. Note the direction you are going to:

Right means move decimal to the right. Left means move decimal to the left.

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

**********************************************************************************************

17(a) 360 s to ms o → → →o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 3 places to the right --> 360_ _ _.

Fill in the blanks with zeroes --> 360,000

(b) 4800 g to kg o← ← ← o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 3 places to the left --> 4.<u>8</u> <u>0</u> <u>0</u>

<u />

(c) 5600 dm to m o← o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 1 place to the left --> 560. <u>0</u>

<u />

(d) 72 g to mg o → → →o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 3 places to the right --> 72 _ _ _.

Fill in the blanks with zeroes --> 72,000

***********************************************************************************************

18 (a) 245 ms to s o← ← ← o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 3 places to the left --> . <u>2</u> <u>4</u> <u>5</u>

(b) 5 m to cm o → →o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 2 places to the right --> 5 _ _.

Fill in the blanks with zeroes --> 500

(c) 6800 cm to m o← ← o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 2 places to the left --> 68. <u>0</u> <u>0 </u>

<u />

(d) 25 kg to Mg o← ← ← o

$\boxed{\begin{array}{c|c|c|c|c|c|c|c|c|c}Mega&x&x&kilo&x&deka&unit&deci&centi&milli\\M\_\_&&&k\_\_&&dk\_\_&\_\_\_&d\_\_\)&c\_\_&m\_\_\end{array}}$

Move the decimal 3 places to the left --> . _ 25

Fill in the blanks with zeroes --> .025

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4 years ago

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Westkost [7]

Answer:

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4 years ago

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Setler79 [48]

Answer:

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3 years ago

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