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2 years ago

1) Alarge doud of dust and gas spread out in a large area is

Chemistry

1 answer:

alexdok [17]2 years ago

8 0

Answer:

D. nebula

Explanation:

Hope this helps

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The object is traveling at a velocity of m/s.

marishachu [46]

Answer:

$= 3.75m {s}^{ - 1} \\$

Explanation:

$velocity = \frac{displacement}{time} \\ = \frac{15m}{4s} \\ = 3.75m {s}^{ - 1}$

3 0

3 years ago

A researcher recorder that a chemical reaction require 2.90 gal water and raised the temperature of the reaction vessel by 57°F.

Ivan

Answer:

10.875L

Explanation:

The problem here is a simple conversion. The conversion is from gal to liters Liter is a SI unit for recording volume as stated in the problem.

Given that:

1 gallon of water = 3.75L

2.90 gallon will be 2.9 x 3.75; 10.875L

4 0

2 years ago

Calculate a reasonable amount (mass in g) of your unknown acid to use for a titration. You will want about 30 mL of titrant to g

Vinil7 [7]

Answer:

"0.60 g" is the appropriate solution.

Explanation:

The given values are:

Volume of base,

= 30 ml

Molarity of base,

= 0.05 m

Molar mass of acid,

= 400 g/mol

As we know,

⇒ $Molarity=\frac{Number \ of \ moles \ of \ base}{Number \ of \ solution}$

On substituting the values, we get

⇒ $0.05=\frac{Number \ of \ moles \ of \ base}{30\times 10^{-3}}$

⇒ $Number \ of \ moles \ of \ base=0.05\times 30\times 10^{-3}$

⇒ $=1.5\times 10^{-3}$

hence,

⇒ $Moles \ of \ acid=\frac{Mass \ of \ acid}{Molar \ mass \ of \ acid}$

On substituting the values, we get

⇒ $1.5\times 10^{-3}=\frac{Mass \ of \ acid}{400}$

⇒ $Mass \ of \ acid=1.5\times 10^{-3}\times 400$

⇒ $=0.60 \ g$

8 0

3 years ago

Suppose you are a chemical engineer working with a client who produces toothpaste.The client wants to add a blue stripe with min

Nikitich [7]

Answer:

Explanation:

I would ask him why would he want to add the blue stripe?

5 0

3 years ago

A student has a salt water solution. When the student adds more salt to the solution it completely dissolves. What type of solut

AlladinOne [14]

Answer:

<h2>Saturated</h2>

Explanation:

<em>A</em><em>saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. Table salt (NaCl) readily dissolves in water.</em>

3 0

2 years ago

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