Answer: 1 = 1e-5
Explanation: Divide the pressure value by 100000
Answer:
The answer to your question is below
Explanation:
There are 4 types of chemical reactions:
- Synthesis is when two elements or compounds form only one compound.
- Decomposition is when 1 compound is broken into 2 or more products.
- Single replacement is when one element is replaced by another element.
- Double replacement is when the cations of two compounds are interchanged.
6.- Synthesis Al + 3Cl ⇒ AlCl₃
7.- Double replacement 2NaOH + H₂SO₄ ⇒ Na₂SO₄ + 2H₂O
8.- Decomposition Ni(ClO₃)₂ ⇒ NiCl₂ + 3O₂
9.- Combustion 2C₄H₁₀ + 13O₂ ⇒ 8CO₂ + 10H₂O
10.- Single replacement Zn + 2HCl ⇒ ZnCl₂ + H₂
Answer:
Radium and Polonium
Explanation:
Marie Curie won the 1911 Nobel Prize in Chemistry for her discovery of the elements polonium and radium, using techniques she invented for isolating radioactive isotopes.
Answer:
C₄H₃N
Explanation:
To solve this question we must find the moles of each atom in order to find the empirical formula (Simplest ratio of atoms present in a molecule). With empirical formula and the molar mass of the compound we can find the molecular formula as follows:
<em>Moles H:</em>
91.5mg H * (1mmol / 1mg) =
91.5mmol H
<em>Moles N:</em>
424mg N * (1mmol / 14mg) =
30.286mmol N
The ratio of moles regard to moles N (The lower number of moles is:
H = 91.5mmolH / 30.286mmolN = 3.0
N = 30.286mmolN / 30.286mmolN = 1
empirical formula = CₓH₃N
The molar mass of this formula is:
12*x + 1*3 + 1*14 = 17g/mol
Solving for X:
12X + 17g/mol = 65g/mol
12X = 48g/mol
X = 4
There are 4 atoms of carbon and molecular formula is:
<h3>C₄H₃N</h3>
