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3 years ago

12

Which elements would be expected to form a binary compound of the form XY? A- Sodium and sulfur B- magnesium and bromine C- pota

ssium and phosphorous D- aluminum and phosphorus

1 answer:

aleksandrvk [35]3 years ago

6 0

Aluminium and phosphorus. D

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238 93 Np → 0 -1 e+ ?

Sergeeva-Olga [200]

Answer:

²³⁸₉₃Np → Pu₉₄²³⁸ + ⁰₋₁e

Explanation:

²³⁸₉₃Np → Pu₉₄²³⁸ + ⁰₋₁e

Beta radiations:

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

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3 years ago

What are three (3) rights workers have in the workplace?

Jobisdone [24]

Answer:

The right to refuse work that could affect their health and safety and that of others.

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3 years ago

What is the molecular formula of the compound

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Molecular formula: C10H15Cl5

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3 years ago

A certain protein was found to contain 0.292% manganese by mass. Determine the minimum molecular mass of the protein.

Lisa [10]

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3 years ago

1. Which of the following is a correctly written thermochemical equation?

WITCHER [35]

Explanation:

1. Thermochemical equation is balance stoichiometric chemical equation written with the phases of the reactants and products in the brackets along with the enthalpy change of the reaction.

The given correct thermochemical reactions are:

$Fe(s)+O_2(g)\rightarrow Fe_2O_3(s),\Delta H = 3,926 kJ
$

$C_3H_8(g)+5O_2 (g)\rightarrow 3CO_2 (g)+4H_2O(l),\Delta H= 2,220 kJ/mol$

2. Phase change affect the value of the enthalpy change of the thermochemical equation. This is because change in phase is accompanied by change in energy. For example:

$H_2O(s)\rightarrow H_2O(g),\Delta H_{s}=51.1 kJ/mol$

$H_2O(l)\rightarrow H_2O(g),\Delta H_{v}=40.65 kJ/mol$

In both reaction phase of water is changing with change in energy of enthalpy of reaction.

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3 years ago

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