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3 years ago

Liquid 1 has a density of 2.0 g/ml, Liquid 2

1 answer:

8 0

Liquid 2 because the lower the density the more it floats and the higher the density the more it sinks. The order from top to bottom is liquid 2, liquid 3, liquid 1

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What is a magnetic field

babymother [125]

a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

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3 years ago

acetylene gas c2h2 undergoes combustion to produce carbon dioxide and water vapor How many grams of water are produced by the sa

ella [17]

<u>Answer:</u> The amount of water produced in the given reaction is $0.692x$ grams.

<u>Explanation:</u>

Let us assume that the initial amount of acetylene gas given be 'x' grams. Now, to calculate the number of moles, we will use the formula:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ....(1)

Given mass of acetylene = x grams

Molar mass of acetylene = 26 g/mol

Putting values in above equation, we get:

$\text{Number of moles of acetylene}=\frac{xg}{26g/mol}=\frac{x}{26}mol$

The reaction of combustion of acetylene is given by the equation:

$2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O$

By Stoichiometry of the reaction:

2 moles of acetylene produces 2 moles of water.

So, $\frac{x}{26}$ moles of acetylene will produce = $\frac{2}{2}\times \frac{x}{26}=\frac{x}{26}$ moles of water.

Now, to calculate the amount of water produced, we use equation 1:

Molar mass of water = 18 g/mol

Moles of water = $\frac{x}{26}mol$

Putting values in equation 1, we get:

$\frac{x}{26}mol=\frac{\text{Mass of water}}{18g/mol}$

$\text{Mass of water}=\frac{x}{26}\times 18=0.692x$ grams

8 0

3 years ago

The rate constant for a particular zero-order reaction is 0.075 M s-1. If the initial concentration of reactant is 0.537 M it ta

Phoenix [80]

Answer : It takes time for the concentration to decrease to 0.100 M is, 22.4 s

Explanation :

Formula used to calculate the rate constant for zero order reaction.

The expression used is:

$\ln [A]=-kt+\ln [A_o]$

where,

$[A_o]$ = initial concentration = 0.537 M

$[A]$ = final concentration = 0.100 M

t = time = ?

k = rate constant = 0.075 M/s

Now put all the given values in the above expression, we get:

$\ln (0.100)=-0.075\times t+\ln (0.537)$

$t=22.4s$

Therefore, it takes time for the concentration to decrease to 0.100 M is, 22.4 s

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3 years ago

Litmus paper is made from water-soluble dyes which are extracted from lichens. This paper is used as an acid-base indicator. Whi

Nutka1998 [239]

The household substances that will turn blue litmus paper red are: A) bleach and D) Vinegar. This is because bleach contains acidic solutions; and vinegar contains a percentage of organic acids for example, acetic acid.

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3 years ago

I really don't know how to do this someone please help

andrey2020 [161]

Heres the answer to the rest of that paper as well

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3 years ago