Ask question

Ask question

All categories

3 years ago

14

When a 0.764 g almond is burned, it heats 225 mL of water from 14.8oC to 18.4oC. Calculate the heat of combustion of the almond

in kcal/g

1 answer:

Soloha48 [4]3 years ago

8 0

It’s 1.071 BWIWNWOWLQQMKWBWJWNWKWNQKKQJWKWKKQKWKAMQNMWNWNWKWWKWKWNWKW

You might be interested in

Identify the molecule with the strongest intermolecular force <br> HF<br> HCl<br> Hl<br> HBr

Dominik [7]

Hey there !:

HF s molecule with the strongest intermolecular force

<span>HF > HI > HBr > HCl</span><span>

</span>The main factor of influence at the boiling point is the question of intermolecular forces, but not only that, the molar mass also has influence (the greater the molar mass, the greater the boiling point). Note that the only one forming hydrogen bridges is the HF, therefore the largest boiling point, iodine, bromine and chlorine have the same type of intermolecular (permanent dipole) connections as they are polar, and what will differentiate the boiling point of each one is the molar mass.

<span />

6 0

3 years ago

(4.03 Q1) What is a substance which cannot be broken down into different

sergejj [24]

Answer:

An element

Elements are substances that cannot be broken down into simpler substances either by physical or chemical method.

4 0

3 years ago

What’s potassium+calcium sulphate

Dvinal [7]

Potassium +calcium sulphate ------> K2SO4+Ca

5 0

3 years ago

Which of the ionic compounds shown below will be soluble in water? which of the ionic compounds shown below will be soluble in w

Vlad [161]

The answer to this question would be <span>na2so4.

Most of the metal on the first and second columns of the chemical table would have high water solubility. Silver(Ag) and iron(Fe) is a molecule that belongs to transition metal group, which did not have high solubility in the water. Na2SO4 would be the one with highest water solubility</span>

7 0

3 years ago

A common antacid contains the acid-neutralizing agent sodium hydrogen carbonate. Write the chemical formula for sodium hydrogen

kaheart [24]

Sodium hydrogen carbonate has:
$sodium \: ion ( {Na}^{+}), hydrogen \\ ion ( {H}^{+}), and \: carbonate \\ ion ( {CO3}^{2-})$
The + from Na+ and + from H+ makes 2+, and therefore the 2- from CO3 evens the charges to neutral.

Not to be confused with Sodium Carbonate, (Na2CO3), which lack an H, Sodium Hydrogen Carbonate is sometimes shortened to just Sodium Bicarbonate. It is used in the kitchen (cooking) as "baking soda."

Formula: NaHCO3

3 0

3 years ago