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3 years ago

I need help and don’t understand, where does each chemical reaction go?

Chemistry

1 answer:

Andrews [41]3 years ago

8 0

Answer:For the 1st box it starts with 250 and for the 2nd box it starts with CO(2).

Explanation:

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Analyze A scientist tests the hardness of a mineral and finds that it can scratch

zhuklara [117]

Topaz and quartz

Explanation:

Topaz and quartz are minerals that will scratch feldspars but will not scratch corundum. Corundum is one of the hardest substance based on moh's scale.

The hardness of a mineral is its resistance to deformation. A mineral is harder than another if it can scratch it.

The moh's scale of hardness list minerals in the order of their hardness:

Talc
Gypsum
Calcite
Fluorite
Apatite
Orthoclase
Quartz
Topaz
Corundum
Diamond

Diamond is the hardest and talc is the softest.

Orthoclase is a feldspar.

learn more:

Rocks as mineral aggregates brainly.com/question/6568161

Silicate minerals brainly.com/question/4772323

#learnwithBrainly

8 0

3 years ago

Identify the correct equilibrium constant expression for this equation:

mina [271]

Answer:

First Option: B)

Second Option: C)

The pictures below will show the answers. The first picture is the first option, and the second picture is the second option.

3 0

3 years ago

Read 2 more answers

What does the activity series tell us ?

makvit [3.9K]

Answer:

Where is the picture???

4 0

3 years ago

How do you convert Pa*mm^2 to Pa*m^2?

Elden [556K]

Answer:

$1 Pa\times mm^{2} =10^{-6}Pa\times m^{2}$

Explanation:

Pascal(Pa) : It is the SI unit of pressure.It is equal to 1 Newton per meter square(Pa = $N/m^{2}$ )

$Pa\times mm^{2}$ is the Unit of Force(Newton=N)

Calculation,

It is required to convert $mm^{2}$ to $m^{2}$ only, Pa is same in both so no need to alter Pa.

1 m = 1000 mm (see the image)

And,

1 mm = 0.001 m

$1 mm^{2} = 0.001\times 0.001 m^{2}$ (Squaring both side)

$1 mm^{2} = 0.000001 m^{2}$

$1 mm^{2} = 10^{-6}m^{2}$

So,

$1 Pa\times mm^{2} =10^{-6}Pa\times m^{2}$

3 0

3 years ago

How many particles are in 47.7 g of Magnesium? (Round the average

Lynna [10]

Answer:

1.18 × 10²⁴ particles Mg

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

Step 1: Define

47.7 g Mg

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of Mg - 24.31 g/mol

Step 3: Convert

$47.7 \ g \ Mg(\frac{1 \ mol \ Mg}{24.31 \ g \ Mg} )(\frac{6.022 \cdot 10^{23} \ particles \ Mg}{1 \ mol \ Mg} )$ = 1.18161 × 10²⁴ particles Mg

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

1.18161 × 10²⁴ particles Mg ≈ 1.18 × 10²⁴ particles Mg

3 0

3 years ago