I think the correct answer is A. Dichlorosilane has a formula of SiH2Cl2. As we can see, for every mole of this compound there will be two atoms of chlorine, two atoms of hydrogen and one atom of silicon. There are 3 different types of atoms involved. And all of this makes up a compound.
The charge of a nucleus is positive
According to Bronsted-Lowry acid concept
an acid is a that donate a proton" and a base is a "proton acceptor."so
will look for that molecule to which <span><span>H2</span>O</span> "donates" <span>H+</span>to become <span>O<span>H−</span></span>. so answer will be..
. <span>N<span>H3</span>+<span>H2</span>O→N<span>H+4</span>+O<span>H<span>−
so correct option is NH3
hope it helps</span></span></span>
A polyatomic ion<span>, as a molecular ion, is a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex</span>
Answer:
λ = 2.9 × 10⁻⁵ m
General Formulas and Concepts:
c = λν
- C = Speed of Light (3 × 10⁸ m/s)
- ν = frequency (Hz or 1/s⁻¹)
Explanation:
<u>Step 1: Define</u>
ν = 10.4 × 10¹² Hz
<u>Step 2: Solve for λ</u>
- Substitute: 3.0 × 10⁸ = λ(10.4 × 10¹² Hz)
- Divide both sides by ν: 0.000029 = λ
- Rewrite: λ = 2.9 × 10⁻⁵ m
<u>Step 3: Check</u>
<em>We are given 3 sig figs.</em>
Wavelength has only 2 sig figs.