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Naya [18.7K]
3 years ago
15

Meanders are characteristics of a young river. True False

Chemistry
1 answer:
Rainbow [258]3 years ago
7 0
True would be the answer
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The chemical reaction between the reagents luminol and bleach produces a brief flash of light. Which change would most likely ma
Shalnov [3]
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8 0
2 years ago
What is the enthalpy of fusion of water?
malfutka [58]

Answer:

d-  334 kJ/g.

Explanation:

You can detect it from the units of the different choices.

a- has the unit J/g.°C that is the unit of the specific heat capacity (c).

b- has the unit Kelvin that is the unit of temperature.

c- has the unit g/mol which is the unit of the molar mass.

d- has the unit kJ/g which is the unit of the enthalpy divided by the no. of rams that is the specific entha;py of fusion.

<em>So, the right choice is: d-  334 kJ/g.</em>

5 0
3 years ago
Write the formula for the polyatomic ion in fe(hco3)3. express your answer as an ion.
Juliette [100K]
Ions can be atomic or molecular. If an atom contains either positive or negative charge it said to be atomic cation or atomic anion.

When a molecule carry positive or negative charge it is called as polyatomic cation or polyatomic anion. Generally charged or ionized molecules are called as polyatomic ions.

In given question Fe(HCO₃)₃ ionizes as follow,

                         Fe(HCO₃)₃    →    Fe³⁺  +  3 HCO₃⁻

The Ions produced are Fe³⁺ and HCO₃⁻. Fe³⁺ is said to be atomic (Ferric) ion and HCO₃⁻ (Bicarbonate) is polyatomic ion or molecular ion.

6 0
3 years ago
Examine the reactants of the incomplete synthesis reaction. 2Mg + O2 → __________.
Vladimir79 [104]
2MgO
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Mg is the reducing agent to give 2 electrons to O.
Mg becomes Mg2+ and O becomes O2-. These 2 ions form an ionic structure called MgO
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- large molecules made of carbon and<br> hydrogen atoms
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Answer:

They are called hydrocarbons

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2 years ago
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