A student is using a copper strip and a strong chlorine solution in her experiment. Which of these is a chemical property of one of her materials?

Answers

Answer 1

Answer: There are many chemical properties could define the copper strip and a chlorine solution. For an example, the reactivity of copper strip. The Reactivity refers to the tendency of the copper strip to undergo chemical reaction with the chlorine solution.

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Stalactites and stalagmites are examples of _____.organic sedimentary rock
contact metamorphism
extrusive igneous rock
chemical sedimentary rock

Answers

The right option is; chemical sedimentary rock

Chemical sedimentary rocks are rocks that are formed by precipitation of minerals from water. Chemical sedimentary rocks are also called evaporates and they are usually composed of the minerals halite (calcium chloride) and gypsum (calcium sulfate). Examples of chemical sedimentary rocks include stalactites, stalagmites, rock salt, flint, and some dolomites.

Answer:

The correct answer is option D, chemical sedimentary rock

Explanation:

Both stalactites and stalagmites are called drip stone as they are formed of the dripping water consisting of minerals. Both stalactites and stalagmites hang up from the ceiling of caves. These are also refereed to as Chemical sedimentary rocks formed by precipitation. The three major processes involved in the formation of these two rocks are –

a) Physical weathering – which disintegrates the minerals contained in the igneous, sedimentary, or metamorphic rock

b) Chemical weathering – which involves dissolution of weathered rock minerals

c) Precipitation of the dissolved minerals.

The euglena's red eyespot is used for _____.photosynthesis
binary fission
detection of light
detection of danger

Answers

The euglena's red eyespot is used for detection of light.

Answer:

binary fission

Explanation:

Describe the results of Ernest Rutherford's gold-foil experiment and explain how his results changed ideas about the distribution of positive charge within the atom.

Answers

Ernest Rutherford applies alpha particle towards an atom, some atom showed deflection by smaller angle, very few through large angle and many just passed without any deflection.

His results changed the idea for distribution of positive charges as he concluded almost all the positive charge is in center of the atom (inside nucleus) and it is very heavy than electrons which revolves outside the nucleus

Hope this helps!

Physicist Ernest Rutherford established the nuclear theory of the atom with his gold-foil experiment. When he shot a beam of alpha particles at a sheet of gold foil, a few of the particles were deflected. He concluded that a tiny, dense nucleus was causing the deflections.

What is the atomic mass of one mole of O?

Answers

Oxygen's atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 10^23 atoms of oxygen 1 amu = 1.661 x 10^-24g. I hope this helps you. The correct answer for this question is "1.661 x 10^-24g".

The curved top surface of a liquid column

Answers

The curved top of a liquid is the meniscus

Answer:

its a meniscus

hope this works. please mark me brainliest..

In the double replacement reaction between Na2SO4 (aq) and BaCl2 (aq), will a precipitate form?No. This reaction produces no insoluble products.

Yes. The NaCl will precipitate.

Yes. The BaSO4 will precipitate.

Yes. Both the NaCl and the BaSO4 will precipitate.

Answers

Yes. The BaSO₄ will precipitate in this type of double replacement reaction.

What is Double replacement reaction?

This is a type of reaction in which two reactants exchange ions to form two new compounds.

Na₂SO₄ (aq) + BaCl₂ (aq) ⇒ NaCl(aq)+ BaSO₄(s)

The precipitate which will be seen at the bottom of the reaction flask is solid BaSO₄.

Read more about Double replacement reaction here brainly.com/question/5082638

Answer: The correct answer is Yes, $BaSO_4$ will precipitate.

Explanation:

Double displacement reaction is defined as the reaction in which exchange of ions takes place.

$AB+CD\rightarrow AD+CB$

Precipitate is defined as the insoluble salt which emerges when two different solutions are mixed together. It settles down at the bottom of the flask after some time.

The chemical equation for the reaction of sodium sulfate and barium chloride follows:

$Na_2SO_4(aq.)+BaCl_2(aq.)\rightarrow NaCl(aq.)+BaSO_4(s)$

Barium sulfate settles down in the reaction flask and is considered as a precipitate.

Hence, the correct answer is Yes, $BaSO_4$ will precipitate.

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