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3 years ago

How do I know if something is an acid so I can avoid eating it?

Chemistry

2 answers:

adell [148]3 years ago

4 0

Answer:

I don't know gehehshdhshsjsjnsnnsnsn

asambeis [7]3 years ago

3 0

Acids taste sour. Examples are: vinegar & lemons

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an engineer wishes to design a container that will hold 12.0 mol of ethane at a pressure no greater than 5.00x10*2 kPa and a tem

OleMash [197]

Answer:

The minimum volume of the container is 0.0649 cubic meters, which is the same as 64.9 liters.

Explanation:

Assume that ethane behaves as an ideal gas under these conditions.

By the ideal gas law,

$P\cdot V = n\cdot R\cdot T$ ,

$\displaystyle V = \frac{n\cdot R\cdot T}{P}$ .

where

$P$ is the pressure of the gas,
$V$ is the volume of the gas,
$n$ is the number of moles of particles in this gas,
$R$ is the ideal gas constant, and
$T$ is the absolute temperature of the gas (in degrees Kelvins.)

The numerical value of $R$ will be $8.314$ if $P$ , $V$ , and $T$ are in SI units. Convert these values to SI units:

$P =\rm 5.00\times 10^{2}\;kPa = 5.00\times 10^{2}\times 10^{3}\; Pa = 5.00\times 10^{5}\; Pa$ ;
$V$ shall be in cubic meters, $\rm m^{3}$ ;
$T = \rm 52.0 \textdegree C = (52.0 + 273.15)\; K = 325.15\; K$ .

Apply the ideal gas law:

$\displaystyle \begin{aligned}V &= \frac{n\cdot R\cdot T}{P}\\ &= \frac{12.0\times 8.314\times 325.15}{5.00\times 10^{5}}\\ &= \rm 0.0649\; m^{3} \\ &= \rm (0.0649\times 10^{3})\; L \\ &=\rm 64.9\; L\end{aligned}$ .

4 0

4 years ago

List down some examples of matters based on its physical state (Solid,

Anna [14]

Answer:

Examples of Solids

1. Brick

2. coin

3. Iron bar

4. rock

5. wood

Examples of Liquids

1. Blood

2. Honey

3. Wine

4. Water

5. oil

Examples of Gases

A gas does not have a defined shape or volume, so it can expand to fill any size or shape of a container. Particles in gases are widely separated, compared to those in liquids and solids.

Explanation:

5 0

3 years ago

How many formula units make up 30.4 g of magnesium chloride (mgcl2)?

ahrayia [7]

There are 1.923×10^23 formula units in 30.4g mgcl2

molar mass of mgcl2= 95.211g/mol
magnesium= 24.305g/mol
chlorine= 35.45g/mol times 2
24.305+(35.45*2)= 95.211g/mol

sample divided by molar mass times Avogadro's number gives u the formula units

30.4÷ 95.211= .31929
.3193*6.022=1.9288

3 0

4 years ago

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What type of flower is this? This is for a science project.

kenny6666 [7]

I believe that is a plant called Wisteria.

4 0

3 years ago

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An ion is an atom with a net electrical charge due to ______.

Serga [27]

<span>the loss of one or more electrons & the addition of one of more electrons</span>