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2 years ago

10. Composite volcanoes

Chemistry

2 answers:

BartSMP [9]2 years ago

6 0

Answer:

Composite volcanoes. ... They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases.Muh. 28, 1432 AH

lys-0071 [83]2 years ago

5 0

The answer is probably A

Explanation:
It cannot be B as it has broader base, cannot be C as it gets steeper as you approach the top and they are very common. (Also, it is called stratovolcano which has layers)

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Complete and balance the following:(c) FeS(s) + HCl (aq) →

Scrat [10]

balance the following:(c) FeS(s) + HCl (aq) = FeS + 2 HCl → FeCl2 + H2S.

FeS Names: Iron(II) sulfide source: wikipedia, accessed: 2019-09-27, Iron sulfide source: wikipedia, accessed: 2019-09-27, Ferrous sulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02

Appearance: Gray, sometimes in lumps or powder source: wikipedia, accessed: 2019-09-27

HCl – Chlorane source: wikipedia, accessed: 2019-09-27, Hydrogen chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02

Other names: Hydrochloric acid source: balance, accessed: 2019-09-27source: NIOSH NPG, accessed: 2019-09-02, M source: wikipedia, accessed: 2019-09-27, Uriatic acid source: wikipedia, accessed: 2019-09-27

Appearance: Colorless, transparent liquid, fumes in air if concentrated source: wikipedia, accessed: 2019-09-27; Colorless gas source: wikipedia, accessed: 2019-09-27; Colourless compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02.

Learn more about FeS on:
brainly.com/question/1119048

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5 0

1 year ago

Which group/family contains elements with the smallest radius within the same period?

nasty-shy [4]

Answer:

Halogens

Explanation:

From the given choices, the halogens will have the smallest radius within the same period.

The size of an atom is estimated by the atomic radius. This is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state.

Across a period in the periodic table, atomic radii decrease progressively from left to right.
Down a group from top to bottom, atomic radii increase progressively due to the addition of successive shells.

Since halogen is the right most group from the choices given, it will have the smallest radius.

5 0

2 years ago

Help need answer to this, its due tomorrow. __N2+__H2>__NH3

Klio2033 [76]

N2+3H2-->2NH3
is the answer

3 0

2 years ago

a normal hemoglobin concentration in the blood is 15g/100ml of blood how many kilogram of hemoglobin are in a person who has 5.5

jok3333 [9.3K]

Using stoichiometry:

5.5 L of blood x (1000 mL/1L) x (15 g/100 mL) x (1 kg/1000 g) = 0.825 kg

4 0

2 years ago

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HELP!!!

vladimir2022 [97]

Answer:

2.5 × 10⁻⁵ M H₃O⁺ and 4.0 × 10⁻¹⁰ M OH⁻.

Explanation:

∵ pH = - log[H₃O⁺]

∴ 4.6 = - log[H₃O⁺].

∴ log[H₃O⁺] = - 4.6.

∴ [H₃O⁺] = 2.51 x 10⁻⁵.

∵ [H₃O⁺][OH⁻] = 10⁻¹⁴.

[H₃O⁺] = 2.51 x 10⁻⁵ M.

∴ [OH⁻] = 10⁻¹⁴/[H₃O⁺] = 10⁻¹⁴/(2.51 x 10⁻⁵ M) = 3.98 × 10⁻¹⁰ M ≅ 4.0 × 10⁻¹⁰ M.

So, the right choice is: 2.5 × 10⁻⁵ M H₃O⁺ and 4.0 × 10⁻¹⁰ M OH⁻.

4 0

3 years ago

Read 2 more answers