!! PLEASE NO COPY AND PASTE FROM THE INTERNET !! how are wedge ( a simple machine object ) used in the real world

1 answer:

5 0

An example of a wedge in the real world court be an axe used to split things apart or something like a nail holding things together because the end of an axe and a nail have a wedge that is used to perform the tasks they are used for.

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What is the molarity of a salt solution made by dissolving 250.0 grams of NaCl in 775 mL of solution?

tester [92]

The molarity of a salt solution made by dissolving 250.0 grams of NaCl in 775 mL of solution is 5.52 M .

Explanation:

The molarity of a solution tells one how many moles of solute one can get per liter of solution.One should remember to must convert this volume to liters by using the conversion factor:

1 L = 10³ml

Sodium chloride (NaCl) has a molar mass of 58.44 g per mol , which means that the sample will contain:

$250 \mathrm{g} \times \frac{1 \text { mole of } \mathrm{Nacl}}{58.44 \mathrm{g}}=4.278 \text { mole of } \mathrm{Nacl}$

This means that the molarity of the solution will be:

$\text {Molarity,c}=\frac{n_{\text {solute}}}{V_{\text {solution }}}=\frac{4.28}{775 \times 10^{-3}}=0.00552 \times 10^{3}=5.52 M$

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3 years ago

For the reaction...

MAVERICK [17]

Answer:

A: Shift to the left

Explanation:

The reaction would try to use up the added heat by making more H 2 and Cl 2.

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3 years ago

How many moles of h are in 0.73 mole of c6h10s

Mnenie [13.5K]

Answer:

7.3 mole

Explanation:

1 C6H10S gives 10H

0.73 mole of C6H10S gives X mole of Hydrogen

X= 0.73×10=7.3mole

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4 years ago

Answer pls

alukav5142 [94]

the answer is answer

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I need help

liubo4ka [24]

The activation energy in the diagram is 43.8 kcal/ mole, letter C. You have to note that activation energy is the energy needed for the reaction to occur and produce products. Therefore, the spike after H2 and I2 is reacted is the activation energy of the reaction.

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