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pishuonlain [190]
3 years ago
14

What would be the most likely explanation if none of the tested paint samples had turned brown?

Chemistry
1 answer:
mariarad [96]3 years ago
7 0

Answer:4/d

Explanation:

i did this before

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An object has a mass of 3.50 grams and a density of 5.61 g/mL. What is the volume of this object? *
Elina [12.6K]

Answer:

<h2>0.62 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 we have

volume =  \frac{3.50}{5.61}  \\  = 0.6238859...

We have the final answer as

<h3>0.62 mL</h3>

Hope this helps you

5 0
3 years ago
The Answers plz and thx
garri49 [273]

Answer:

The answers to what?

Explanation:

50x89=4,450

5 0
3 years ago
How many moles of Cl- ions are needed to completely combine with 0.25 moles of Mg+2 ions?
Mnenie [13.5K]
<span>The number of moles of Cl- ions needed to combine completely with 0.25 mole of Mg+2 ions is:
0.50.</span>
4 0
3 years ago
How many moles in 2.5 liters of methane gas
Zarrin [17]

Answer:

0.155836449023405

Explanation:

The molecular formula for Methane is CH4.

The SI base unit for amount of substance is the mole.

1 grams Methane is equal to 0.062334579609362 mole.

6 0
3 years ago
A sample was then prepared containing 14.00 mL of coffee and 8.00 mL of 4.80 ppm Li , and diluted to a 50.00 mL total volume. Th
mafiozo [28]

Answer:

The right answer is "[Na^+]=5.57 \ ppm".

Explanation:

The given values are:

\frac{A_s}{A_{coffee}} =\frac{0.840}{1.000}

According to the question,

The concentration of standard will be:

=  \frac{7.80}{50.00}\times 4.80

=  0.156\times 4.80

=  0.748 \ ppm

Coffee after dilution,

⇒  \frac{A_{coffee}}{C_{coffee}} =F\times \frac{A_s}{C_s}

or,

⇒  C_{coffee}=\frac{A_{coffee}}{A_s}\times \frac{C_s}{F}

On substituting the values, we get

⇒               =\frac{1.000}{0.840}\times \frac{0.748}{1.68}

⇒               =1.191\times 1.3104

⇒               =1.561 \ ppm

hence,

In unknown sample, the concentration of coffee will be:

=  1.561\times \frac{50}{14}

=  \frac{78.05}{14}

=  5.57 \ ppm

7 0
3 years ago
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