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mojhsa [17]
2 years ago
15

1) ᴡʜᴀᴛ ᴅᴏ ʏᴏᴜ ᴍᴇᴀɴ ʙʏ ᴘʜᴏᴛᴏɢʀᴀᴘʜʏ ?ˢᵖᵃᵐ ᵃⁿˢʷᵉʳ ʷⁱˡˡ ᵇᵉ ʳᵉᵖᵒʳᵗ :(​

Chemistry
2 answers:
MArishka [77]2 years ago
7 0

  • <em><u>Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.</u></em>

<h2><em><u>hope</u></em><em><u> it</u></em><em><u> helps</u></em></h2>
Sonbull [250]2 years ago
3 0

Answer:

ise dp kyu rak rahi

good morning

#kamina op bolte

✌✌✌✌✌✌

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In hypothetical element, two energy levels are separated by an energy of 282 kj/mol. what wavelength of light (in nm) is involve
scZoUnD [109]

Answer:

4.23*10^2 nm = 423 nm

Explanation:

E={\frac  {hc}{\lambda }}

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\lambda={\frac  {hc}{E }}=\frac{1.98644568*10^{-25}J*m}{4.7*10^{-19}J} =\\\\=4.22648017*10^{-7} m = 4.22648017*10^{-7} m*\frac{10^9 nm}{1 m} =\\\\4.23*10^2 nm = 423 nm

6 0
3 years ago
Dilute solutions of NaHCO3 are sometimes used in treating acid burns.
Temka [501]

Answer:

We need 375 milliliters of 0.100 M NaHCO3 solution

Explanation:

Step 1: Data given

Initial molarity NaHCO3 = 0.100 M

Volume prepared solution = 750.0 mL

Molarity prepared solution = 0.05 M

Step 2: Calculate initial volume

C1*V1 = C2V2

⇒with C1 = the initial concentration = 0.100 M

⇒with V1 = The initial volume = TO BE DETERMINED

⇒with C2 = the new concentration = 0.0500M

⇒with v2 = the new volume = 750.0 mL = 0.750 L

0.100 M * V1 = 0.0500 M * 0.750 L

V1 = (0.0500M * 0.750L)/0.100 M

V1 = 0.375 L = 375 mL

We need 375 milliliters of 0.100 M NaHCO3 solution

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