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blagie [28]
3 years ago
8

Can you help me with this ?

Chemistry
1 answer:
kherson [118]3 years ago
8 0
What is earth science?: The study of our planet Earth
What are the main fields of earth science: Geology, Paleontology, Meteorology, and Oceanography.
What are the main spheres of earth: The Atmosphere, Hydrosphere, and Lithosphere.

the support web thing, i'm confused with. But I hope this helped.
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A student was asked to separate a mixture of chemicals. The weight of each component within the mixture is as follows: potassium
hram777 [196]

Answer:

a

Explanation:

f

6 0
3 years ago
What is the molar mass of citric acid (C6H8O7) and baking soda (NaHCO3)?
Mama L [17]

Answer:

1. 192.0 g/mol.

2. 84.0 g/mol.

Explanation:

  • <em>The molar mass is the mass of all the atoms in a molecule in grams per mole.</em>
  • <em>To calculate the molar mass of a molecule, we first obtain the atomic weights from the individual elements in a periodic table. We then count the number of atoms and multiply it by the individual atomic masses.</em>

<em></em>

<em>1. Molar mass of citric acid (C₆H₈O₇):</em>

<em>Molar mass of C₆H₈O₇ = 6(atomic mass of C) + 8(atomic mass of H) + 7(atomic mass of O)</em> = 6(12.0 g/mol) + 8(1.0 g/mol) + 7(16.0 g/mol) = <em>192.0 g/mol.</em>

<em>2. Molar mass of baking soda (NaHCO₃):</em>

<em>Molar mass of NaHCO₃ = (atomic mass of Na) + (atomic mass of H) + (atomic mass of C) + 3(atomic mass of O) </em>= (23.0 g/mol) + (1.0 g/mol) + (12.0 g/mol) + 3(16.0 g/mol) = <em>84.0 g/mol.</em>

4 0
3 years ago
Question 4 (2 points)<br> CuO(s) + H2(g)<br> Cu(s) +<br> H2O(1)<br> Balance the equation
CaHeK987 [17]

Answer:

CuO(s) + H₂(g) --> Cu(s) + H₂O(l)

Explanation:

It is already balanced. You can see that the values of the elements of the reactants are equal to the values of the elements of the products.

7 0
3 years ago
What is the molar mass of HBR
alexdok [17]

Answer:

Molar mass of bromine is equal to 80.9119

Explanation:

The molar mass of HBr is equal to the sum of atomic weight of  Bromine.

Atomic Weight of hydrogen is equal to 1.00794

Atomic Weight  of Bromine is equal to 79.904

Molar mass of Bromine

= Atomic Weight of hydrogen + Atomic Weight  of Bromine

Molar mass of Bromine  = 79.904 + 1.00794  = 80.9119

3 0
3 years ago
Increasing the concentration of a reactant shifts the position of a chemical equilibrium towards formation of more products. wha
Natalija [7]
<h2>The required "option is e)".</h2>

Explanation:

  • The Rate of formation of products depends on the concentration of reactants or the forward reaction increases on increasing the rate of the concentration.
  • There is no effect on the equilibrium rate when the concentration of reactants and products is constant.
  • Forward reaction slows down when the reactant concentration is decreased.
  • On increasing the amount or concentration of reactant the chemical  equilibrium shifts towards formation of more products.
  • Hence, the forward reaction speeds up.
4 0
3 years ago
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