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3 years ago

Identify the TRUE statement.

Chemistry

1 answer:

xeze [42]3 years ago

4 0

Answer:

d. In a granite containing quartz, mica, and feldspar, everything weathers to clay except the quartz.

Explanation:

Granite is a rock formed by a set of minerals, but its composition is basically as follows: Quartz, a colorless mineral; Feldspar (orthoclase, sanidine and microcline), responsible for the variety of colors, including reddish, pink and cream-gray; and Mica (biotite and muscovite), which adds shine to the rock. Of these three minerals, mica and feldspar generate clay during the weathering process, however quartz does not generate clay, probably due to its hardness.

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How do an alligator’s eyes help it survive?

scoray [572]

An alligator has has an extra eyelid that protects there eyes underwater. It's basically their own built-in goggles.

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3 years ago

The rock cycle allows for an igneous rock to turn into what type of rock

zhuklara [117]

Answer:

metamorphic rock

Igneous rock can change into sedimentary rock or into metamorphic rock.

Explanation:

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3 years ago

Milk of magnesia is often taken to reduce the discomfort associated with acid stomach or heartburn. The recommended dose is 1 te

Igoryamba

Answer:

8.61 mL of the HCl solution

Explanation:

The reaction that takes place is:

2HCl + Mg(OH)₂ → MgCl₂ + 2H₂O

From the given mass of Mg(OH)₂, we can calculate <u>the moles of HCl that are neutralized</u>:

4x10² mg = 400 mg = 0.400g

0.400g Mg(OH)₂ ÷ 58.32g/1mol = 6.859*10⁻³ mol Mg(OH)₂

6.859*10⁻³ mol Mg(OH)₂ * $\frac{1molHCl}{1molMg(OH)_{2}} =$ 3.429x10⁻³ mol HCl

Finally, to calculate the volume of an HCl solution, we need both the moles and the concentration. We can <u>calculate the concentration using the pH value</u>:

pH = -log[H⁺]

1.4 = -log[H⁺]

$10^{-1.4}$ = [H⁺]

0.0398 M = [H⁺] = [HCl] *Because HCl is a strong acid*

Thus, the volume is:

0.0398 M = 3.429x10⁻³mol HCl / Volume

Volume = 8.616x10⁻³ L = 8.62 mL

6 0

4 years ago

Read 2 more answers

An unknown compound has the following chemical formula:

luda_lava [24]

Answer:

where the main questions of these assmesnt

Explanation:

4 0

3 years ago

How many grams (of mass m) of glucose are in 285 ml of a 5.50% (m/v) glucose solution?

ZanzabumX [31]

The percentage of glucose given is m/v. This means that the given percentage of volume consists of mass.
In this solution, percentage of glucose is 5.5% m/v.
This means that 5.5% of the volume is the mass of glucose.
Given volume is 285 mL.
Therefore mass of glucose is 5.50% of 285 mL = (5.5*285)/100
mass of glucose = 15.67 g

4 0

3 years ago