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3 years ago

A curved piece of glass or other transparent material that is used to refract light is called a (an) _____.

Chemistry

2 answers:

Furkat [3]3 years ago

7 0

Answer:

C) reflector

Explanation:

Think about a small mirror if you put it in the sun it reflects light so it is reflector

lesya692 [45]3 years ago

4 0

Answer:

Lens

A curved piece of glass or other transparent material that is used to refract light.

Explanation:

u got ig?

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Effect of azeotrope system

Naddik [55]

Answer:

Explanation:

The effect of azeotrope system is that , a positive azeotrope system boils at lower temperature than the other liquid constituents. It is also refer to as minimum temperature.

A negative azeotrope system boils at high temperature than other liquid constituents.

A azeotrope mixure refer to mixture of liquid with constant boiling point.

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2 years ago

What is the molecular formula for the compound that is made up of 30.45 g n and 69.55 g o, and has a formula mass of 92.02 amu?

Irina-Kira [14]

The answer would be N₂O₄

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3 years ago

How many moles of Ca are in 3.75 x 10^25 atoms of Ca?

ioda

<h3>Answer:</h3>

62.3 mol Ca

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.75 × 10²⁵ atoms Ca

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 3.75 \cdot 10^{25} \ atoms \ Ca(\frac{1 \ mol \ Ca}{6.022 \cdot 10^{23} \ atoms \ Ca})$
Multiply/Divide: $\displaystyle 62.2717 \ mol \ Ca$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

62.2717 mol Ca ≈ 62.3 mol Ca

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2 years ago

3. Unlike global winds, local winds (select the two answers that are correct)

Viktor [21]

Answer:

Small-scale convection currents arise from uneven heating on a smaller scale. This kind of heating occurs along a coast and in the mountains. Small-scale convection currents cause local winds. Local winds blow over a much smaller area and change direction and speed over a shorter period of time than global winds.

Maybe that will help you answer the question.

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3 years ago

Which of the following is NOT an

skelet666 [1.2K]

The answer is C. Light because light is a form of energy

8 0

3 years ago

Read 2 more answers