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Pavlova-9 [17]
3 years ago
11

Which of the following pairs of aqueous solutions would not produce a reaction when mixed? Select one: a. NaNO3 and CuCl2 b. Ba(

OH)2 and HNO3 c. CaCl2 and Na3PO4 d. AgNO3 and HCl
Chemistry
1 answer:
Gekata [30.6K]3 years ago
7 0

Answer:

a. NaNO3 and CuCl2

Explanation:

The other 3 react as follows:

Ba(OH)2 and HNO3 ---> BaNO3 + H2O

CaCl2  + Na3PO4 --->  CaPO4 + NaCl

AgNO3 + HCl --->  AgCl +  HNO3

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alexandr402 [8]

having a lesser value by a process of depletion

3 0
3 years ago
How do you Convert 19mL to pL?
s2008m [1.1K]

Picoliter is a unit of measurement for liquids.

One picoliter = 1×10⁻⁹ mililiters

So:

19 mL ---- x pL

1×10⁻⁹ mL ---- 1 pL

1×10⁻⁹x = 19

x = 1,9 × 10¹⁰ pL

or 19,000,000,000 pL

Answer: 1.9 × 10¹⁰ pL

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1 year ago
The following thermochemical equation is for the reaction of Fe 3 O 4 (s) with hydrogen (g) to form iron and water vapor Fe 3 O
Mila [183]

Answer:

41.3kJ of heat is absorbed

Explanation:

Based in the reaction:

Fe₃O₄(s) + 4H₂(g) → 3Fe(s) + 4H₂O(g) ΔH = 151kJ

<em>1 mole of Fe3O4 reacts with 4 moles of H₂, 151kJ are absorbed.</em>

63.4g of Fe₃O₄ (Molar mass: 231.533g/mol) are:

63.4g Fe₃O₄ × (1mol / 231.533g) = <em>0.274moles of Fe₃O₄</em>

These are the moles of Fe₃O₄ that react. As 1 mole of Fe₃O₄ in reaction absorb 151kJ, 0.274moles absorb:

0.274moles of Fe₃O₄ × (151kJ / 1 mole Fe₃O₄) =

<h3>41.3kJ of heat is absorbed</h3>

<em />

6 0
3 years ago
List the following elements in order from smallest atomic radii to largest:<br> Cr, Fe, Zn, Sc
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Sc(21), Cr(24), Fe(26), Zn(30)
4 0
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prisoha [69]
Here's the numbers
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5 0
3 years ago
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