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3 years ago

Fine-grainted igneous rocks form?

Chemistry

1 answer:

Harman [31]3 years ago

5 0

In molten lava like all the rest.

Hope it helped!!!

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Calculate the molar hydrogen ion concentration of each of the following biological solutions given the pH:

Marrrta [24]

Answer: A

Explanation: Calculate the molar hydrogen ion concentration of each of the following biological solutions given the pH, Urine pH= 4.90

6 0

3 years ago

All of the cells in the body need oxygen. Hemoglobin molecules in red blood cells transport oxygen through the bloodstream. Oxyg

tankabanditka [31]

Answer:

High partial pressure of oxygen in the tissues.

Explanation:

Hemoglobin is a protein found in the red blood cells that is responsible for the transportation of oxygen from the lungs to the rest of the tissues in the body. The partial pressure determines whether oxygen is loaded or unloaded into the hemoglobin.

When there is lack of oxygen in our bodies, we experience hypoxia.

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3 years ago

How do you know if a new substance is formed in a chemical equation

S_A_V [24]

Answer: The indicators written will identify a new substance is formed in a chemical equation.

Explanation:

A chemical equation is defined as the equation in which reactants and products are present and are separated by a right arrow.

$\text{Reactants}\rightarrow \text{Products}$

Indicators of a chemical reaction are:

Formation of a precipitate
Evolution of gas
Formation of bubbles
Color change
Specific odor
Change in temperature

Hence, the indicators written will identify a new substance is formed in a chemical equation.

7 0

3 years ago

Describe the experiments conducted by Thomson and Rutherford, and how the observations and evidence from each of these experimen

nasty-shy [4]

Thomson
In his model discovered electron which has negative charge whereby this electrons were positioned throught the atom surrounded by a soup of positive balance the negative charge of electron
Rutherford
In his model concluded that atom is made up of central charge surrounded by orbiting electrons.

4 0

3 years ago

Predict the products of the reaction below. That is, complete the right hand side of the chemical equation. Be sure your equatio

pickupchik [31]

Answer:

2 HClO₃ + Ca(OH)₂ ---> Ca(ClO₃)₂ + 2 H₂O

Explanation:

This is a double-displacement reaction. In these reactions, the cation of one molecule swaps with the cation of another.

In this case, the hydrogen cation (H⁺) from HClO₃ swaps with the calcium cation (Ca²⁺) of Ca(OH)₂. When writing the products, keep the charges of the ions in mind. The products must be neutral, so some will need to have more than 1 cation/anion.

The unbalanced equation:

HClO₃ + Ca(OH)₂ ---> Ca(ClO₃)₂ + H₂O

Reactants: 3 hydrogen, 1 chlorine, 5 oxygen, 1 calcium

Products: 2 hydrogen, 2 chlorine, 7 oxygen, 1 calcium

The balanced equation:

2 HClO₃ + Ca(OH)₂ ---> Ca(ClO₃)₂ + 2 H₂O

Reactants: 4 hydrogen, 2 chlorine, 8 oxygen, 1 calcium

Products: 4 hydrogen, 2 chlorine, 8 oxygen, 1 calcium

4 0

2 years ago