What kind of reaction shows two reactants combining to form one new product?

Determine the number of valence electrons for magnesium

12345 [234]

Answer:

Magnesium has 2 valence electrons.

Explanation:

The atomic number of magnesium is 12. This means that it has 12 protons and 12 electrons. The first electron shell can hold 2 electrons, the second can hold 8, so the third will have 2 electrons. The outermost shell of the atom has two electrons. Therefore, magnesium has 2 valence electrons.

3 0

4 years ago

What happens when you combine Bleach And Ammonia?<br> best answer will get brainly

Nataliya [291]

Answer:

It can be very dangerous and possibly deadly to mix bleach and ammonia.

Explanation:

When you combine these two household cleaners they release toxic chloramine gas. If you are exposed to chloramine gas it may cause irritation in your eyes, nose, throat, and lungs. It can even lead to coma and death in higher concentrations.

4 0

3 years ago

What is the mass of carbon dioxide formed when 36g of carbon is burnt?<br> C+O2 ------->C02

Anestetic [448]

Answer:

Mass = 132 g

Explanation:

Given data:

Mass of CO₂ formed = ?

Mass of C burnt = 36 g

Solution:

Chemical equation:

C + O₂ → CO₂

Number of moles of carbon:

Number of moles = mass/molar mass

Number of moles = 36 g/ 12 g/mol

Number of moles = 3 mol

now we will compare the moles of carbon and carbon dioxide.

C : CO₂

1 : 1

3 : 3

Mass of CO₂:

Mass = number of moles × molar mass

Mass = 3 mol × 44 g/mol

Mass = 132 g

7 0

3 years ago

Someone help me with this ASAP

ZanzabumX [31]

Answer:

First bone

Explanation:

6 0

4 years ago

Read 2 more answers

Which of the following would tell you that a weak base is present?

Thepotemich [5.8K]

Answer:

A. An indicator added to the solution turns green-blue.

Explanation:

A pH scale measures the concentration of hydrogen ions in acidic and alkaline solutions.

In chemistry, pH literally means the power of hydrogen ions and it is a measure of the molar concentration of hydrogen ions in a particular solution; thus, specifying the acidity, neutrality or basicity of any chemical solution.

Mathematically, the pH of a solution is given by the formula;

$pH = -log_{10}(H^{+})$

On a pH scale, a solution with a pH of 7 is neutral, a solution with a pH below 7 is acidic and it's basic (alkaline) when it's pH is above 7.

A pH indicator can be defined as a compound (substance) that indicates the concentration of hydrogen ions present in a solution by changing its color over a narrow range of pH values.

A pH range of 1 to 3 (1 - 3) represents a strong acid with a red color.

When an indicator added to a solution turns green-blue, it simply means that a weak base is present.

5 0

3 years ago