If a material conducts heat easily, its a good _____. <br> It has to be a 18 letter word

Question is in the image

zloy xaker [14]

Answer:(3)

Explanation: 2Al+3H2SO4----->Al(2SO4)3+3H2

6 0

3 years ago

Read 2 more answers

A colorless, toxic, radioactive gas is called what

DanielleElmas [232]

A colorless, toxic, radioactive gas is called, bioaccumulation.

3 0

3 years ago

Look at the question marks between zinc (Zn) and arsenic (As) . At the time no elements were known with atomic weights between 6

Mumz [18]

Mendeleev positioned elements in the periodic table in increasing order of their atomic numbers, such that elements having identical chemical properties and characteristics plunge into the same group.

<h3>What is Mendeleev's periodic table?</h3>

Mendeleev's periodic table may be defined as a collection of elements in an increasing atomic mass hierarchy in a table arrangement, such that it reminisces resemblances and manias according to their chemical properties and characteristics.

Mendeleev found that two elements existed between atomic weights 65.2 and 75 because he comprehended especially pleasingly that the possessions of the elements were more comparable and closer to this degree.

He also anticipated having other elements that would have their possessions comparable to these other elements.

Therefore, he departed a void for these two elements in the periodic table until they were ultimately found in their real existence.

The complete question is as follows:

Look at the two question marks between zinc (Zn) and arsenic (As). At the time, no elements were known with atomic weights between 65.2 and 75. But Mendeleev predicted that two elements must exist with atomic weights in this range. What led Mendeleev to predict that two undiscovered elements existed in that range?

Therefore, it is well described above.

To learn more about Mendeleev's periodic table, refer to the link:

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8 0

2 years ago

1. Calculate the quantity of glucose needed to prepare (a) 250 mL of a 100 mM of

weeeeeb [17]

Answer:

a. mass of glucose required = 4.50 g

b. mass of glucose required = 0.05 g

c. mass of glucose required = 25g

Explanation:

1a. molar mass of glucose = 180.156 g/mol

volume of solution = 250 mL or 250 mL * 1 L/1000 mL = 0.25 L

concentration of solution = 100 mM or 100mM * 1 M/1000 mM = 0.10 M

amount in moles = mass/ molar mass = concentration * volume

mass in grams = concentration * volume * molar mass

mass = 0.10 * 0.25 * 180.156

mass of glucose required = 4.50 g

b. mass concentration of 0.05 % solution = 0.05 g/100 ml = 0.5 g/L

volume of solution = 100 mL = 0.1 L

mass in grams = mass concentration * volume

mass in grams = 0.5 g/L * 0.1 L

mass of glucose required = 0.05 g

c. mass concentration of solution = 50 mg/ mL = 0.05 g/ 0.001 L = 50 g/L

volume of solution = 500 mL = 0.5 L

mass of solute required = concentration * volume

mass required = 50 g/L * 0.5 L

mass of glucose required = 25g

7 0

3 years ago

Salt is the product formed by a reaction in which _______ atoms of an acid are replaced by the atoms

vazorg [7]

Salt is produced by the reaction of an acid with a base, alkali or carbonate. Hence, salt is produced through neutralization. As for this question, salt is produced by the reaction where hydrogen ions (H+) of an acid are replaced by the ions of metal (NH4+)

Answer: <span>B. hydrogen</span>

4 0

3 years ago

If a material conducts heat easily, its a good _____. It has to be a 18 letter word