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Nataly [62]
2 years ago
9

What is a pinhole camera? Discuss the characteristics of the image formed in a pinhole camera.​

Chemistry
1 answer:
Tasya [4]2 years ago
6 0

Explanation:

A pinhole camera, as name suggests, is a camera has no lens. is a light- proof box,small hole on 1 side, light thru one side. projects an inverted pic which is known as an abscura effect....

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Which of the following has higher ionization energy - Be or Ca. Explain your choice in terms of attractive force between protons
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Answer:

Ca has the greater Ionization Energy because the Trend is I/e decreases as you move down a group. Therefore, Ca has the greater I/e

Explanation:

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By breaking the hydrogen bonds that cause surface tension
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What is the half-life in minutes of a compound if 75.0 percent of a given sample decomposes in 40.0 minutes? Assume first-order
yaroslaw [1]

Answer:

See below

Explanation:

.75 = 1/2^(40/h)      

log .75 / ( log 1/2) = 40 / h

<u>h = half life =   96.37683 min</u>

8 0
1 year ago
An atom of gold has a mass of 3.271 X 10-22 g. How many atoms of gold are in 5.00 g of gold? (Give your answer in scientific not
Kobotan [32]

Answer:

1.53 × 10²² atoms Ag

Explanation:

Step 1: Define conversions

3.271 × 10⁻²² g = 1 atom

Step 2: Use Dimensional Analysis

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Step 3: Simplify

We have 3 sig figs.

1.52858 × 10²² atoms Ag ≈ 1.53 × 10²² atoms Ag

5 0
2 years ago
How can I explain that orange juice is a homogeneous mixture ?
Masteriza [31]

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