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3 years ago

What is the mass of an empty film canister?

Chemistry

1 answer:

Alekssandra [29.7K]3 years ago

6 0

If this is just a general question it seems to vary from about 4.5g to 5g. Is there more data to the question?

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You are asked to bring the pH of 0.500L of 0.550 M NH4Cl to 7.00. Which of the following solutions would you use: 12.0 M HCl or

ch4aika [34]

1 drop is approximately 0.05mL. Since 0.500L of 0.550M NH4Cl contains 0.275mol of substance (calculated by using c=n/V formula), equal amount of substance of NH3 is needed to neutralize this solution (since pH of 7 is neutral solution). Thus, we need 0.0275L of NH3, i.e. around 550 drops.

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3 years ago

What is the definition of carbohydrates

Mkey [24]

Answer:

carbohydrates are energy giving foods that warm the body and could be in different forms

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3 years ago

Read 2 more answers

State two differences between metals and non metals with respect to their

Naya [18.7K]

Answer:

Physical Properties

1. Metals are shiny but most non - metals lack this property.

2. Metals are able to deform under compression (malleable) but most non - metals lack this property.

Chemical Properties

1. Metals are good conductorsof heat and electricity but most non - metals are insulators.

2. Metals, when exposed to water atmospheric oxygen tend to rust but non - metals lack this chemical property

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3 years ago

What is the volume of an object with a mass of 31g and density of 444g/ml

Tanzania [10]

Answer:

<h2>The answer is 0.07 mL</h2>

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 = 31 g

density = 444 g/mL

We have

$volume = \frac{31}{444} \\ = 0.06981...$

We have the final answer as

Hope this helps you

5 0

3 years ago

When something heats up, new energy is created, and when something cools down, energy is destroyed. agree disagree

olga nikolaevna [1]

Disagree because in the law of conservation of mass, it states energy cannot be created or destroyed

4 0

3 years ago