Name the following Type 1 compounds:

Write the molecular formula of sodium bicarbonate and write any two uses of it.

gulaghasi [49]

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$\huge\mathbb\colorbox{black}{\color{white}{FORMULA\:\:↓}}$

<h3><em>NaHCO3</em></h3>

$\huge\mathbb\colorbox{black}{\color{white}{USES\:\:↓}}$

<h3><em>preparing baking powder. as an antacid in medicine. in fire extinguishers. manufacture of soda water.</em></h3>

$\huge \colorbox{pink}{Hope \: It \: Help \: U}$

5 0

3 years ago

A shiny chunk of metal is found to have a mass of 37.28g. The metal is dropped into a graduated cylinder which contains 20.0 mL

Amanda [17]

Answer: The density of the material is 2.66 g/mL and it is likely this is made of Aluminum

Explanation:

The first step to know the material of the chunk of metal is to calculate its density. The general formula for density is P (density) = $\frac{m (mass)}{ v (volume)}$ . Moreover, in this case, it is known the mass is 37.28 g, but the volume is not directly provided. However, we know the water in the graduated cylinder had a volume of 20.0 mL and this increased to 34.0 mL when the chunk of metal is added, this means the volume of the metal is 14 mL (34.0 mL - 20.0 mL = 14 mL). Now let's calculate the density:

$P =$ $\frac{37.28g}{14.0mL}$

$P = 2.66 g/mL$

This means the density of this metal is 2.66 g/mL, which can be rounded as 2. 7 g/mL, and according to the chart, this is the density of aluminum. Therefore, this material of this chunk is aluminum.

6 0

4 years ago

What is the ranking order of the degree of polarity? Of HF,HCI,HBr and HI

Savatey [412]

Answer:

The ranking order of the degree of polarity is HF>HCl>HBr>HI

Explanation:

The degree of polarity of a compound depends on the nature electronegative atom that it contains.

Among Fluorine,chlorine,bromine and iodine the electronegativity of fluorine is highest among all the mentioned atoms.

Due to high electronegativity HF is the most polar than HCl,HBr and HI and the HI have least polarity as its atomic structure is large and electronegativity is lower than fluorine,chlorine and bromine.