All categories

3 years ago

Select the correct empirical formula for each molecular formula given.

Chemistry

1 answer:

Neko [114]3 years ago

3 0

Answer: CH2O

Explanation:

this formula is glucose, as you said the molecular formula is C6H12O6 because an actual molecule of glucose contains that many atoms of each element

an empirical formula is the simplest whole-number ratio of a formula (ex: 1-2-1)

You might be interested in

You are making a map of your state in your map scale 1 cm equals 10 km if two cities are 200 km apart how many centimeters apart

Agata [3.3K]

The answer is 20 centimeters

6 0

4 years ago

3. Which element is most important for growing crops?

madreJ [45]

Answer:

B. hydrogen

Explanation:

that's because hydrogen is an element.

8 0

3 years ago

Write the net ionic equation for this reaction occurring in water: ammonium fluoride and magnesium chloride are mixed to form ma

MAXImum [283]

Correct answer: 3. $Mg^{2+}(aq) + 2 F^{-}(aq) --> MgF_{2}(s)$

The given chemical reaction is between ammonium fluoride and magnesium chloride to form magnesium fluoride and ammonium chloride.

The balanced chemical equation representing the reaction will be,

$2NH_{4}F (aq) + MgCl_{2}(aq) -->MgF_{2} (s) + 2NH_{4}Cl (aq)$

The complete ionic equation for the reaction: All the compounds soluble in water (aqueous) will split into ions, $MgF_{2}$ will not split into ions as it is insoluble in water.

$2 NH_{4}^{+}(aq) + 2 F^{-}(aq) + Mg^{2+}(aq) + 2 Cl^{-}(aq) --> MgF_{2}(s) + 2 NH_{4}^{+}(aq) + 2 Cl^{-}(aq)$

The net ionic equation will be:

$Mg^{2+}(aq) + 2 F^{-}(aq) --> MgF_{2}(s)$

Here the spectator ions are $NH_{4}^{+} and Cl^{-}$

6 0

3 years ago

How many kilojoules are absorbed when 0.772 mol of N2(g) reacts? N2(g) + 2NO(g) → 2N2O(g) ΔH = 73.8 kJ

ANEK [815]

Answer:

56.97kJ

Explanation:

1 mole of N2 reacts with 73.8kJ

0.772 mole of N2 reacts with xkJ

cross multiply

x= 0.772×73.8

=56.97kJ

5 0

3 years ago

4 g of X2O3, an oxide of efement X, contains 2.8 g of X. How many moles of X<br> are there?

ziro4ka [17]

Moles of X are 0.925 moles.

A mole is a totally vital unit of dimension that chemists use.The mole, symbol mol, is the unit of amount of substance inside the worldwide device of gadgets. the amount quantity of the substance is a measure of how many simple entities of a given substance are in an item or sample. The mole is described as containing exactly 6.02214076×10²³ primary entities

mass of X2O3 = 4 g

so moles = mass/molar mass

molar mass of X2O3 = 2*X + 48 -

Given, that the mass of X = 2.8g

mass of O = 4 - 2.8 = 1.2g

A mole of O = 1.2g/16 = 0.075 mole

∴ mole of X = 1 - 0.075 = 0.925 moles.

Learn more about moles here:-brainly.com/question/15356425

#SPJ9

4 0

2 years ago