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ira [324]
3 years ago
13

Why do scientists use a mortar and pestle?

Chemistry
1 answer:
postnew [5]3 years ago
6 0

Due to increase the surface area of a solute.

Hope this helps have a very good dayyyyyy.........

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40.0 L of oxygen were collected at 10°C and<br> 758 mm of Hg. Calculate its volume at STP.
marta [7]

Answer:

189.5

Explanation:

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2 years ago
Does seeing a gas produced always mean a chemical reaction is occurring? Explain.
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Seeing signs of a chemical reaction does not always mean that a reaction is happening. For example, a gas (water vapor) is given off when water boils. ... You can tell that it is a physical change because water vapor can condense to form liquid water. In a chemical change, a new substance must be produced.
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2 years ago
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A science teacher asked students to calculate the density of a toy block. The mass of the block was 110 grams and the volume of
Kipish [7]

Answer:

13.75

Explanation:

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5 0
3 years ago
A student obtains the following data: Mass of empty, dry graduated cylinder: 21.577 g Volume added of NaCl solution: 4.602 mL Ma
klasskru [66]

<u>Answer:</u> The density of NaCl solution is 3.930 g/mL

<u>Explanation:</u>

We are given:

Mass of cylinder, m_1 = 21.577 g

Mass of NaCl and cylinder combined, M = 39.664 g

Mass of NaCl, m_2 = (M-m_1)=(39.664-21.577)g=18.087g

To calculate density of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

We are given:

Mass of NaCl = 18.087 g

Volume of NaCl solution = 4.602 mL

Putting values in above equation, we get:

\text{Density of NaCl}=\frac{18.087g}{4.602mL}\\\\\text{Density of NaCl}=3.930g/mL

Hence, the density of NaCl solution is 3.930 g/mL

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3 years ago
What can we do to protect our oceans ?
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Pick up plastic, reduce waste, reduce pollutants
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3 years ago
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