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stiv31 [10]
3 years ago
5

Igneous rocks that form when lava cools on Earth's surface are called _______ igneous rocks

Chemistry
1 answer:
astra-53 [7]3 years ago
3 0
They form when magma enters an underground chamber, cools very slowly, and forms rocks full of large crystals.
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Use the drop-down menus to identify the class of compounds to which each structure belongs.
inna [77]

Answer:

1) carboxylic acid

2) ether

3) alkyl halide

4) amine

Explanation:

Just took the quiz

3 0
3 years ago
Explain in terms of atomic structure why the atomic radius of K is larger than that of Na
Lina20 [59]

Answer:

Potassium (K) has a larger average atomic radius (220 pm) than sodium (Na) does (180 pm). The potassium atom has an extra electron shell compared to the sodium atom, which means its valence electrons are further from the nucleus, giving potassium a larger atomic radius. The ionic radius increases in a particular group on moving from top to bottom due to increase in the principle energy shell though the number or electrons in the valence shell remain the same

3 0
3 years ago
From your observations of the simulation, which strategy was most effective for quickly and efficiently producing ammonia? Why d
Bogdan [553]

Answer:

The electrochemical synthesis of ammonia from nitrogen under mild conditions using renewable electricity is an attractive alternative to the energy-intensive Haber–Bosch process, which dominates industrial ammonia production.

Explanation:

However, there are considerable scientific and technical challenges facing the electrochemical alternative, and most experimental studies reported so far have achieved only low selectivities and conversions. The amount of ammonia produced is usually so small that it cannot be firmly attributed to electrochemical nitrogen fixation rather than contamination from ammonia that is either present in air, human breath or ion-conducting membranes, or generated from labile nitrogen-containing compounds (for example, nitrates, amines, nitrites and nitrogen oxides) that are typically present in the nitrogen gas stream, in the atmosphere or even in the catalyst itself. Although these sources of experimental artefacts are beginning to be recognized and managed, concerted efforts to develop effective electrochemical nitrogen reduction processes would benefit from benchmarking protocols for the reaction and from a standardized set of control experiments designed to identify and then eliminate or quantify the sources of contamination.

8 0
4 years ago
Suggest the identity of the gas in the bubbles ​
Vlad1618 [11]

Answer:

<h3>it is hydrogen gas </h3>

3. the chemical equation is :

MgSO4 ( s ) + H2SO4 (aq)-->

MgSO4 (aq) + CO2 (g) + H2O (I)

THE IONISING OF H2SO4 IN SOLUTION IS CONPLEX

4. MAGNESIUM REACTION WITH DILUTE SULPHURIC ACID TO FORM

MAGNESIUM SULPHATE AND HYDROGEN GAS

Explanation:

hope it helps u

7 0
3 years ago
Read 2 more answers
A continuous fractionating column is designed to separate a mixture of benzene
densk [106]

Answer:

in the fraction distillation method, two liquids such as benzene and toluene are produced from the mixture of benzene  and toluene.

Explanation:

Fractional distillation is a technique used in the industries for the separation of two or more liquids from one another. In this process liquid is heated, those liquid has lower boiling point will change into vapor form and collect in the upper chamber of fractional distillation while the liquid having higher boiling point also evaporates after sometime and keep it in another chamber. In the mixture of benzene  and toluene, the boiling point of benzene is lower so it evaporates earlier than toluene.

6 0
3 years ago
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