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4 years ago

Calculate the molarity of a solution of sodium hydroxide if it contains 0.5 moles in 75ml of solution.

Chemistry

1 answer:

tatuchka [14]4 years ago

3 0

Molarity = moles of solute/volume of solution (L)

0.5 moles/0.075 L = 6.67 M

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zysi [14]

Answer:

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Explanation:

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3 years ago

What is the molarity of a solution that contains 2.93 g of NaCl dissolved in 0.025 L? 0.0012 M 0.050 M 1.3 M 2.0 M

MakcuM [25]

Answer:

2.0 M

Explanation:

Step 1: Given data

Mass of NaCl (solute): 2.93 g

Volume of the solution: 0.025 L

Step 2: Calculate the moles corresponding to 2.93 g of NaCl

The molar mass of NaCl is 58.44 g/mol.

2.93 g × 1 mol/58.44 g = 0.0501 mol

Step 3: Calculate the molarity of the solution

Molarity is equal to the moles of solute divided by the liters of solution.

M = 0.0501 mol/0.025 L = 2.0 M

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3 years ago

A pencil has a density of .655 g/ml. It has a mass of 3.5g. What is its volume

Leviafan [203]

Answer:

<h3>The answer is 5.34 mL</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density}\\$

From the question

mass = 3.5 g

density = 0.655 g/mL

We have

$volume = \frac{3.5}{0.655} \\ = 5.343511450...$

We have the final answer as

Hope this helps you

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3 years ago

Perform the following conversion: 6.1 × 103 K (the surface temperature of the Sun) to °F and °C. Pay attention to the number of

Keith_Richards [23]

Answer:

$\°C=5.8x10^3\°C$

$\°F=1.1x10^4\°F$

Explanation:

Hello,

In this case, for the calculation of the temperature in degree Celsius we subtract 273.15 to the given temperature in kelvins:

$\°C=6100-273.15\\\\\°C=5.8x10^3\°C$

Next, by applying the following equation we compute it in degree Fahrenheit:

$\°F=(5.8x10^{3}*9/5) + 32\\\\\°F=1.1x10^4\°F$

Clearly, since the initial unit has two significant figures the computed units also show two significant figures.

Regards.

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3 years ago

Which two systems does the nervous system work with to direct behavior

vovikov84 [41]

The muscular and skeletal system because we use our brain to move our body it sends a signal to move that muscle that we want to use

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4 years ago