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3 years ago

How many moles of ammonium ions are in 1.3 grams of ammonium carbonate?

1 answer:

3 0

Molecular weight of (NH4)2 CO3 = 96 gm. 96 gm (NH4)2CO3 = 1 mol of (NH4)2CO3 = 2 moles of NH4. Therefore 1.3 gm of (NH4)2CO3 = 1.3x2/ 96 = 0.027 moles.

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What characterizes a homogeneous mixture?

Vadim26 [7]

It has the same composition throughout, unlike a heterogeneous which has visibly separate substances

4 0

3 years ago

You have 255 mL of a 1.5 M solution, how much liquid do you need to BOIL AWAY to increase the molarity to 2.5 M?

Lera25 [3.4K]

Answer:

102ml

Explanation:

by using the dilution formulae and then you slove for the second volume by making it subject of the fomular
when you get it you then subtract the final volume that you got from the initial volume because they asked from the question what liquid do u need to boil away

6 0

3 years ago

Write a net ionic equation for the reaction between mno4- and fe2+ in acid solution

dedylja [7]

Answer : The complete net ionic reaction between $MnO _{4} ^{-}$ and $Fe ^{2+}$ in an acid solution, can be written as :-

$MnO _{4} ^{-} + 5Fe ^{2+} + 8 H ^{+} ----\ \textgreater \ Mn ^{2+} + 5 Fe^{3+} + 4 H _{2}O.$

6 0

3 years ago

By means of a schematic diagram show how a bacteria cell applied to the region of a cowpea root can end up becoming a nitrate io

GenaCL600 [577]

Answer:

Nitrifying Bacteria are a group of aerobic bacteria important in the nitrogen cycle as converters of soil ammonia to nitrates, compounds usable by plants. An example is nitrosomonas or nitrobacter and species in that family.

The schematic diagram is attached below, which summarises the oxidation of ammonia or free nitrogen in the soil to nitrates for the cowpea plant's utilisation.

4 0

3 years ago

How many formula units are there in 50.3 moles potassium chloride?

Alona [7]

<h3>Answer:</h3>

3.03 × 10²⁵ formula units KCl

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

Reading a Periodic Table
Writing Compounds

<u>Atomic Structure</u>

Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

<u>Step 1: Define</u>

50.3 mol KCl (Potassium chloride)

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

<u /> $\displaystyle 50.3 \ mol \ KCl(\frac{6.022 \cdot 10^{23} \ formula \ units \ KCl}{1 \ mol \ KCl} )$ = 3.02907 × 10²⁵ formula units KCl

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

3.02907 × 10²⁵ formula units KCl ≈ 3.03 × 10²⁵ formula units KCl

6 0

3 years ago