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3 years ago

What very specific property of mineral calcite allows geologists to quickly identify it in a mixture of other colorless minerals

1 answer:

3 0

This is your perfect answer.

Other Identifying Characteristics
Calcite is easy to identify even without testing the reaction to HCl, by its hardness, luster and cleavage. Another special property is magnetism

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43 mg = [?]g A. 0.043 g B. 4.3 g C. 4300 g D. 43,000 g

Ymorist [56]

Answer:

Option A (0.043 g) is the correct answer.

Explanation:

Given:

= 43 mg

As we know,

$1 \ mg = \frac{1}{1000} \ g$

then,

⇒ $43 \ mg = \frac{43}{1000} \ g$

$= 0.043 \ g$

Thus, the above is the correct alternative.

4 0

2 years ago

What is the mass, in grams, of a pure gold cube that has a volume of 4.30 cm3?

umka21 [38]

The density of a pure gold is 19.32g/cm3
if the volume is 4.30 cm3 then we can calculate the mass using the formula mass=density x volume
mass=19.32*4.30
mass=83.076g

4 0

3 years ago

An unbalanced chemical equation is shown:

Sati [7]

Answer:

1. Two to decompose

Explanation:

It's going to be a decomposition so you can eliminate answers 3 and 4. It is a decomposition because it is splitting apart. Then you can figure out that it is going to be two instead of four by balancing the equation

H2O2 → 2H2O + O2

$2H_{2}O_{2} → 2H_{2}O + O_{2}$

6 0

3 years ago

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Carbon disulfide is produced by the reaction of carbon and sulfur dioxide. What is the percent yield of carbon disulfide if the

Akimi4 [234]

Answer:

The percent yield of carbon disulfide is 78.8%

Explanation:

Percent yield of reaction = (Produced yield / Theoretical yield) . 100

5C + 2SO₂ --> CS₂ + 4CO

In the reaction 5 moles of C, produce 1 mol of CS₂

40 g / 12 g/m = 3.33 moles

Then, this is the rule of three:

5 mol of C produce 1 mol of CS₂

3.33 moles of C, will produce ( 3.33 .1)/5 = 0.666 moles

Mol . molar mass = mass → 0.666 mol . 76.12 g/m =50.7 g (Theoretical yield)

(40 g / 50.7 g) . 100 = 78.8%

7 0

2 years ago

PLEASE HELP I WILL GIVE A brainliest

max2010maxim [7]

Answer:

Sitting at the bottom of the slide will have the most kinetic energy because all the potential energy is transferred to kinetic after he slides

Explanation:

4 0

2 years ago

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