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Margaret [11]
3 years ago
8

Which of the following elements exist naturally as a covalently bonded molecule?

Chemistry
1 answer:
mr Goodwill [35]3 years ago
4 0
I think that it's D.
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An element's atomic number is 63. How many protons would an atom of this element have?
lyudmila [28]
Atomic number of an element correlates to the number of protons an atom of that element will have. An atom of this element would have 63 protons.
8 0
3 years ago
A geologist finds a small mineral fragment with a volume of 2.57 cm3 and a mass of
Sindrei [870]

  • The density of the mineral fragment is

(20.47 g/cm3).

  • Density can be regarded as<em> ratio of mass to the volume </em>of the object.

Density = (mass/ volume)

Given:

volume of mineral fragments= 2.57 cm3

mass = 52.6 g

density of the mineral fragment = (52.6/2.57)

= 20.47 g/cm3

  • Therefore, density of the mineral fragment is (20.47 g/cm3)

Learn more at: brainly.com/question/13594966

5 0
3 years ago
Read 2 more answers
Due to mechanical weathering, a small boulder has broken into several pieces. Explain how this will affect the rate at which the
andrezito [222]

Answer:

It will increase the rate of chemical weathering.

Explanation:

Weathering is the breaking down or dissolving of rocks and minerals on the surface of the earth into smaller grains or soil.

Weathering can occur either by biological, chemical or mechanical means.

When mechanical (or physical) weathering breaks a small boulder into pieces, this will lead to an increase in the rate of chemical weathering.

Chemical weathering involves chemical reactions or changes that occur in rocks which results in changes in their size and composition. This chemical reactions that breaks down rocks include hydrolysis by water and oxidation by oxygen. <em>The rate of chemical reactions increase with increase in surface area of the substances reacting.</em>

When the boulder is broken into smaller pieces, it exposes a larger area of these rocks to the chemical reactions that weather rocks. For example, a larger surface of the rock may be exposed to water result in faster reaction of the rock salts with water, and thus, the rock particles are broken down faster.

7 0
4 years ago
Who is Ethiopian <br> ......?!?!?!
Igoryamba

Answer:

Me

Explanation:

I got 4 Ethiopian brainly friends..im happy if u free plz talk me to find some one

5 0
3 years ago
Co(g) + 2 h2 --&gt; ch3oh 2.50 g of hydrogen is reacted with 30.0 l of carbon monoxide at stp. 1. what is the limiting reactant?
Lemur [1.5K]
CO(g) +2H2--->CH3OH
2.50g H2*1mol/2g=1.25 mol H2
30.0L CO*1mol/22.4L=1.34 mol CO,
according to reaction 1 mol CO needs 2 mol H2,so 1.34 mol CO need 2.68 mol H2, so 1) limiting teactant is H2 (H)

2)1.25 mol CH3OH will be produced, 1.25 mol*32g/mol=40.0 g CH3OH
3) 1.25 mol H2 needs 0.625 g CO
1.34-0.625=0.715 g CO leftover

7 0
3 years ago
Read 2 more answers
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