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svlad2 [7]
4 years ago
11

Iron is the most

Chemistry
1 answer:
Georgia [21]4 years ago
5 0

hope this is correct

Answer:

D

Explanation:

Iron is the fourth most abundant element, by mass, in the Earth's crust. The core of the Earth is thought to be largely composed of iron with nickel and sulfur. The most common iron-containing ore is haematite, but iron is found widely distributed in other minerals such as magnetite and taconite.

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If you have 3.50 moles of hydrogen and 5.00 moles of nitrogen to produce ammonia, which element is the reactant in excess? 3H2 +
kicyunya [14]

Answer:

nitrogen

Explanation:

The stoichiometry of the reaction says that H_{2} and  N_{2} react 3:1 to form 2 moles of  NH_{3}, so, if you have 3,5 moles of H, which is equal to 1,75 moles of  H_{2}, and 5 moles of N, which are equal to 2,5 moles of  n_{2}. only\frac{1,75 moles of H2}{3}=0.583 moles of  N_{2}, will react, leaving <em>1.917 moles of </em> N_{2} <em>unreacted</em>, and forming 0.583*2=1.166 moles of  NH_{3}

3 0
3 years ago
The density of water is 1.00g/cm3. Express this density in lb/m3​
Ira Lisetskai [31]

Answer:  2205 lb/m^3

Explanation:  

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Convert:  (1g/cm^3)*(0.002205lb/g)*(1cm^3/1x10^-6m^3) = 2205 lb/m^3

           

4 0
3 years ago
Every single-celled organism is able to survive because it carries out *
deff fn [24]

Answer:

Every single celled organism is able to survive because it carries out metabolic activities.

Metabolic activity is a set of chemical reactions which are needed for an organism to maintain it's life

Explanation:

the various types of metabolic processes keep an organism alive. There are various types of metabolic processes that takes place in the body of living organism.

These are cellular respiration, reproduction, excretion, digestion et cetera. Every living cell has these processes going on in their body to keep them alive.

Living organism need energy to carry out these processes which they get by eating food.

Read more on Brainly.com - brainly.com/question/12186942#readmore

6 0
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valentinak56 [21]
If a solid changes right to a gas, it's called sublimation. If a gas changes directly to a solid, it's called deposition.
7 0
3 years ago
nter your answer in the provided box. Nitric acid (HNO3) is used in the production of fertilizer, dyes, drugs, and explosives. C
OLga [1]

Answer:

Explanation:

pH = - log[ H⁺ ]

[ H⁺ ] = .39

pH = - log .39

= - log (39 x 10⁻²)

= 2 - log 39

= 2 - 1.59

=  .4 1

8 0
3 years ago
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