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4 years ago

Examples of two substances being mixed and the

Chemistry

1 answer:

yKpoI14uk [10]4 years ago

6 0

Answer:

ocean water liquid and steel solid

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How many neutrons are present in the atom of a team that has the atomic number of 50 and the mass number of 119?

Anna [14]

119 (atomic mass)- 50 protons= 69 neutrons

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4 years ago

How many grams are in 0.220 mol of Ne?

kumpel [21]

Answer:

4.44 g Ne

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

Step 1: Define

0.220 mol Ne

Step 2: Identify Conversions

Molar Mass of Ne - 20.18 g/mol

Step 3: Convert

$0.220 \ mol \ Ne(\frac{20.18 \ g \ Ne}{1 \ mol \ Ne} )$ = 4.4396 g Ne

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

4.4396 g Ne ≈ 4.44 g Ne

3 0

3 years ago

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A photon has an energy of 1.10 x 10 -13 j. What is the photon's wavelength? What type of electromagnetic radiation is it?

lawyer [7]

Answer:

λ = 0.002 nm

The given photon is either x-ray or gamma ray because the range of x-ray and gamma ray is 1 nm-0.1 pm.

Explanation:

Given data:

Energy of photon = 1.10 × 10⁻¹³ J.

Wavelength of photon = ?

Solution:

Formula:

E = h.c / λ

λ = h. c / E

λ = 6.626 × 10⁻³⁴ j. s × 3×10⁸ m/s / 1.10 × 10⁻¹³ J.

λ = 19.878 × 10⁻²⁶m / 1.10 × 10⁻¹³ J

λ = 18.071 × 10⁻¹³ m

λ = 18.071 × 10⁻¹³ × 10⁹

λ = 18.071 × 10⁻⁴ nm

λ = 0.002 nm

The given photon is either x-ray or gamma ray because the range of x-ray and gamma ray is 1 nm-0.1 pm.

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4 years ago

Earth's lithospheric plates

mr_godi [17]

The answer is - D. are constantly in motion

These plates move back and forth and sometimes even end up going one above other

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4 years ago

A solution contains 4.08 g of chloroform (CHCl3) and 9.29 g of acetone (CH3COCH3). The vapor pressures at 35 ∘C of pure chlorofo

Sergeeva-Olga [200]

Explanation:

Below is an attachment containing the solution.

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4 years ago

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Examples of two substances being mixed and the ​

Examples of two substances being mixed and the