To reduce the costs of extracting aluminum, what must be added to it to reduce the melting point? A. Bauxite B. Cryolite C. Cathode D. Anode

Answer:

3). C

Explanation:

When inter-nuclear distance [ atomic radius ] is smaller, the nuclear attraction has a greater magnitude.

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Answer:

l think it's hydrogen chloride

Explanation:

Answer:

The virus's genome is uncoated from the protein and injected into the host cell.

Explanation:

Answer:

Explanation:s the gravitational field strength on Earth's 9.8 N kg?

The gravitational field strength of the Earth is 10 N/kg (10 newtons per kilogram).

Answer:

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C2H2 will be left  when the burning is complete.

The equation of the reaction is; 2C2H2 + 5O2 --> 4CO2 + 2H2O

The number of moles of C2H2 reacting is = 1.20 g/26 g/mol = 0.046 moles

The number of moles of O2 is = 3.50 g/32 g/mol = 0.109 moles

Since;

2 mole of C2H2 reacts with 5 moles of O2

x moles of C2H2 reacts with 0.109 moles of O2

x = 2 mole × 0.109 moles/5 moles

x = 0.044 moles of C2H2.

It then follows that C2H2 is the reactant in excess so C2H2  will be left  when the burning is complete.

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Answer:

Use filtration method lol.

Answer:

4

Explanation:

If there is 12 boxs that cost $48, you need to divide the 12 boxs into the $48 to see how many time 12 goes into it to see how much it is. So 48 divided by 12 is 4.

Answer:

b is correct

Explanation:

Answer:

B.  state matter change from solid to liquid.

Explanation:

Melting happens when a solid turns (melts) into a liquid.

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Answer:

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Explanation:

Oxygen

Answer: The answer is ‘a neutral atom gained 2 electrons’

Explanation: Because electrons are negatively charged and adding 2 extra would make the ion negatively charged by 2

Answer:

The answer to all the quiz questions are

Explanation:

1. Which statement describes the number of protons in each atom of an element?

*The number of protons is given by the atomic number, which increases by one moving from left to right across each row of the periodic table.*

2. An element has an atomic number of 16. An ion of this element has a 2– charge. How was the ion formed?

*A neutral atom gained 2 electrons.*

3. Rubidium has an atomic number of 37 and a mass number of 85. How many protons, neutrons, and electrons does an ion of rubidium with a 1+ charge have?

*37 protons, 48 neutrons, and 36 electrons*

4. There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true?

*Their atomic masses differ.*

5. Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have?

*5*

because it doesn't react easily with other elements it requires high heat and other things

Answer: it's group 14

Explanation:

The common group name for carbon is Group 14 (IVa) on the periodic table.

Answer:

This is an English server, sorry

Explanation:

Answer:

platinum is the correct answer

Answer:

it would be made of platinum

Explanation:

When you have collected a lot of data most likely need to use a computer to analyze data. Option B is correct.

The analyzed data is a system in which the unmanaged data or the messy data can be arranged in a recognizable sequence for the better study of something for which data is to be maintained.

The computer is needed for the process as the computer has some special characters to maintain tables according to alphabets and according to the number and can be taken out anytime want.

Therefore, Option B is correct. When you have collected a lot of data most likely need to use a computer to analyze the data.

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Answer:

Descriptive investigations use careful observations and measurements to develop findings. Science journals, science logs, and field notebooks are some of the tools scientists use to gather information for descriptive investigations.

Explanation:

Answer

50 N

Explanation

Explanation:

basically, you'll just have to convert the given grams into moles, convert that into moles of Br, and then convert it again into grams of Br

The amount of gram of [tex]Br_{2}[/tex] will be  65.1 grams in equation [tex]2AlCl_{3} + 3Br_{2}[/tex]→ [tex]2AlBr_{3} + 3Cl_{2}[/tex].

The definition of a gram was given as the mass of one cubic centimeter of pure water at 4 degrees Celsius.

Calculation of amount of  [tex]Br_{2}[/tex]

The given equation is [tex]2AlCl_{3} + 3Br_{2}[/tex]→ [tex]2AlBr_{3} + 3Cl_{2}[/tex].

The mass of  [tex]Br_{2}[/tex]  = Count of bromine molecule × molar mass

The mass of  [tex]Br_{2}[/tex]   = 0.4072 × 159.8

The mass of  [tex]Br_{2}[/tex]   = 65.08 mol.

The amount of gram of  [tex]Br_{2}[/tex]  will be  65.1 grams in equation  [tex]2AlCl_{3} + 3Br_{2}[/tex]→ [tex]2AlBr_{3} + 3Cl_{2}[/tex].

Therefore, the answer will be option (a).

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Answer:  0.050 moles of NaOH

Explanation:  The molar mass of NaOH is 40.0g/mole

2.0g/40.0g/mole  =  0.050 moles (2 sig fig)

Explanation:

Neon is [Ne] 3s2 3p3 = 1s2 2s2 2p6 3s2 3p3.

Answer:

[tex]{ \underline{ \sf{solubility}}}[/tex]

Answer:

Chemical change.

Hope this helps you.

Answer:

potassium hydroxide + sulfuric acid → potassium sulfate + water.

Explanation:

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Answer: a

Explanation:

i took the test

Explanation:

Answer:

Explanation:

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

Answer:

d

Explanation:

b/ce The strong force effects produce a mass that is essentially independent of the kinds of quarks involved, so this mass contribution will be the same for the proton and neutron.

Answer:

law

Explanation:

it is called a scientific law