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emmasim [6.3K]
3 years ago
15

PLEASE ANSWER QUICK!

Chemistry
2 answers:
Katen [24]3 years ago
8 0

Answer:

Explanation:The silica tetrahedron is a molecule containing four oxygen atoms and one silicon atom. It resembles a triangular pyramid, with the silicon atom located in the middle and one oxygen atom located at each of the four corners.

The structure of olivine is described as isolated tetrahedral because each tetrahedron is bonded to either a magnesium ion or an iron ion.

Although some minerals always appear the same color, many vary in color due to trace elements within the mineral. These trace elements can alter the mineral’s coloring.

Minerals with a metallic luster do not allow light to pass through. Minerals with a nonmetallic luster do allow light to pass through.

In minerals, cleavage refers to breaks that occur along a specific plane. Fractures refer to irregular breaks.

MA_775_DIABLO [31]3 years ago
8 0

Answer:

1.The silica tetrahedron is a molecule containing four oxygen atoms and one silicon atom. It resembles a triangular pyramid, with the silicon atom located in the middle and one oxygen atom located at each of the four corners.

2.The structure of olivine is described as isolated tetrahedral because each tetrahedron is bonded to either a magnesium ion or an iron ion.

3.Although some minerals always appear the same color, many vary in color due to trace elements within the mineral. These trace elements can alter the mineral’s coloring.

4.Minerals with a metallic luster do not allow light to pass through. Minerals with a nonmetallic luster do allow light to pass through.

5.In minerals, cleavage refers to breaks that occur along a specific plane. Fractures refer to irregular breaks.

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kirill115 [55]

The density  is:

d=m/V

Applying the values in  the formula:

0.8 g/cm³ = m / 10 cm³

Solving for m:

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5 0
3 years ago
A piece of metal has a volume of 0.250 hogsheads and a mass of 54.424 kg. calculate the density of the metal in pennyweights per
drek231 [11]
<span>Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. We calculate the density using the equation

Density = mass / volume

The units asked for the density would be </span>penny<span>weights per peck. </span> The conversion factors are as follows:

1 pennyweight (pw) = 1.55 grams 
<span>1 hogshead (hh) = 238.5 liters </span>
<span>1 peck = 9.091 liters
</span>
We calculate as follows:

mass = 54.424 kg ( 1000 g / 1kg ) ( 1 pennyweight / 1.55 g ) = 35112.26 pennyweight
volume = <span>0.250 hogsheads ( 238.5 L / 1 hogshead ) ( 1 peck / 9.091 L ) = 6.56 peck

Density = </span>35112.26 pennyweight / 6.56 peck = 5353.55 pw / peck
6 0
3 years ago
Consider this reaction: HCO3− H2S → H2CO3 HS− Which is the Bronsted-Lowry base? H2S HCO3- HS– H2CO3.
motikmotik

Bronsted Lowry base is the species that accepts or acquires protons from other species of the reaction. \rm HCO_{3}^{-}is the Bronsted-Lowry base.

<h3>What is a Bronsted-Lowry base?</h3>

In an acid-base reaction, the element or the compound capable of obtaining a proton or a hydrogen atom is called a Bronsted-Lowry base.

According to the theory, the base will accept proton and acid will donate an electron. The reaction of the acid and base is shown as,

\rm HCO_{3}^{-} + H_{2}S \rightarrow H_{2}CO_{3} + HS^{-}

From the reaction, it can be said that bicarbonate is the Bronsted-Lowry base as the number of hydrogen or protons are increasing in the product.

Therefore, option b. \rm HCO_{3}^{-} is the Bronsted-Lowry base.

Learn more about Bronsted-Lowry base here:

brainly.com/question/25945459

4 0
2 years ago
How are living things organized into domains and kingdoms check all that apply
zepelin [54]

what are the options ?

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denpristay [2]
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Radio waves, microwaves, and viable light are all on the higher part of the spectrum.

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