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3 years ago

True or False All cells are the same on the inside HELP ME!

Chemistry

1 answer:

wel3 years ago

7 0

False... flip phones and iphones are one example of them not having the same inside

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HELP PLS !!!! :))Formula unit of Sr and CI Formula unit of AI and S

xenn [34]

Answer : The formula unit of Sr & Cl is $SrCl_2$ and the formula unit of Al & S is $Al_2S_3$

Explanation :

Formula unit : it is defined as the lowest number ratio of ions of an elements in an ionic compound or covalent compound.

For the formula unit of Sr & Cl, two chloride ions $(Cl^-)$ are needed to neutralize the one strontium ion $(Sr^{2+})$ .

For the formula unit of Al & S, three sulfide ions $(S^{2-})$ are needed to neutralize the two aluminium ion $(Al^{3+})$ .

The formula unit of $SrCl_2$ and $Al_2S_3$ are shown below.

4 0

3 years ago

How is iron extracted? Describe in brief

Feliz [49]

Answer:Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron(III) oxide, Fe 2O 3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.

3 0

3 years ago

Read 2 more answers

How do you find this does anyone know ?

tester [92]

no sorry I don't know how to do it

6 0

3 years ago

7) Explain how tsunamis are formed. How do tsunamis change the surface of the Earth?

Virty [35]

Well, for starters:

Tsunamis are formed by tectonic plates smashing into one another.
They are caused by earthquakes, landslides, volcanic eruptions, and even under sea earth quakes.

Hope this helps!

5 0

3 years ago

What mass of sulphuric acid can be made from 8g of SO3

Serhud [2]

Answer:

10 g H₂SO₄

General Formulas and Concepts:

Chemistry - Stoichiometry

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

Step 1: Define

Given: 8 g SO₃

RxN: SO₃ + H₂O → H₂SO₄

Step 2: Identify Conversions

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of SO₃ - 32.07 + 3(16.00) = 80.07 g/mol

Molar mass of H₂SO₄ - 2(1.01) + 32.07 + 4(16.00) = 98.09 g/mol

Step 3: Stoichiometry

$8 \ g \ SO_3(\frac{1 \ mol \ SO_3}{80.07 \ g \ SO_3} )(\frac{1 \ mol \ H_2SO_4}{1 \ mol \ SO_3} )(\frac{98.09 \ g \ H_2SO_4}{1 \ mol \ H_2SO_4} )$ = 9.80042 g H₂SO₄

Step 4: Check

We are given 1 sig fig. Follow sig fig rules and round.

9.80042 g H₂SO₄ ≈ 10 g H₂SO₄

8 0

3 years ago