All categories

2 years ago

CHEMISTRY PLEASE HELP ITS MY FINAL

Chemistry

2 answers:

maks197457 [2]2 years ago

8 0

Answer:

1. Periodic table

2. Periods

3. Groups

4. Metals

5. Nonmetals

6. Metalloids

7. Representative elements

8. Transitition metals

Explanation:

Note for the 7th blank: it's either representative elements or main group elements. I'm not sure what terminology is on your vocab list, so keep that in mind. Good luck on your final!

Elena L [17]2 years ago

3 0

Answer:

1. Periodic Table

2. Periods

3. Groups

4. Metals

5. Non - Metals

6. Metalloids

7. Alkaline Metals

8. Transition Metals

Explanation:

i hope this was right. Tell me if it was wrong.

You might be interested in

31 Which ion has the smallest radius?<br> (1) O2-(2) S2-(3) Se2-<br> (4) Te2-

bearhunter [10]

The answer 1) Oxygen. And another smallest radius is fluorine, because it is the first in the periodic table.

6 0

2 years ago

Which statement tells what happens during the rock cycle when rocks undergo great heat and pressure? A. Igneous rock is formed.

balu736 [363]

<span>B. Metamorphic rock is formed</span>

3 0

2 years ago

1. How do metals and non-metals react with acids? Write and explain the chemical equation for the reaction of magnesium with sul

Nata [24]

Answer:

1. How do metals and non-metals react with acids?

Ans : Non metals does not react with acids while metals react with acids and produce hydrogen gas that burns with a 'pop'sound.

2. Write and explain the chemical equation for the reaction of magnesium with sulphuric acid and aluminium with hydrochloric acid.

Magnesium + sulphuric acid = Hydrogen + salt

Mg(s) + H2SO4 (aq) MgSO 4(aq) +H2 (g)

Aluminium + Hydrochloric acid = Hydrogen + Aluminium chloride

2Al(s)+6HCl(aq)→2AlCl3(aq)+3H2(g)

6 0

2 years ago

Read 2 more answers

When solutions of silver nitrate and sodium chloride are mixed, a precipitation reaction occurs. What mass of precipitate can be

Bas_tet [7]

Explanation:

The given precipitation reaction will be as follows.

$AgNO_{3}(aq) + NaCl(aq) \rightarrow AgCl(s) + NaNO_{3}(aq)$

Here, AgCl is the precipitate which is formed.

It is known that molarity is the number of moles present in a liter of solution.

Mathematically, Molarity = $\frac{\text{no. of moles}}{\text{volume in liter}}$

It is given that volume is 1.14 L and molarity is 0.269 M. Therefore, calculate number of moles as follows.

Molarity = $\frac{\text{no. of moles}}{\text{volume in liter}}$

0.269 M = $\frac{\text{no. of moles}}{1.14 L}$

no. of moles = 0.306 mol

As molar mass of AgCl is 143.32 g/mol. Also, relation between number of moles and mass is as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

0.307 mol = $\frac{mass}{143.32 g/mol}$

mass = 43.99 g

Thus, we can conclude that mass of precipitate produced is 43.99 g.

8 0

2 years ago

A tablet of one antacid contains citric acid, H3C6H5O7, and sodium hydrogen carbonate, NaHCO3. When the tablet dissolves in wate

Nadusha1986 [10]

H2O
This equation is a double displacement reaction, and it forms H2CO3, which is very unstable and separates into H2O and CO2.

8 0

2 years ago

Read 2 more answers