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12345 [234]
3 years ago
15

The __ is the only vein in the body that carries oxygen-rich blood.

Chemistry
1 answer:
Vesnalui [34]3 years ago
4 0

Answer:

pulmonary vein

Explanation:

The pulmonary vein is the only vein in the body that carries oxygen rich blood.

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What is the hydronium ion concentration in an aqueous hydrobromic acid solution with a pH of 4.530?
Aloiza [94]

Answer:

2.951 × 10⁻⁵ M

Explanation:

Let's consider the acid reaction of hydrobromic acid according to Brönsted-Lowry acid-base theory.

HBr(aq) + H₂O(l) ⇒ Br⁻(aq) + H₃O⁺(aq)

Given the pH = 4.530, we can calculate the concentration of the hydronium ion using the following expression.

pH = -log [H₃O⁺]

[H₃O⁺] = antilog -pH = antilog -4.530 = 2.951 × 10⁻⁵ M

4 0
3 years ago
Uhm so im kinda not the brightest so halp
Hoochie [10]

Answer:

(a) 156.41 (b) 10 and 14 (c) 16

Explanation:

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3 years ago
Get Organized! A Periodic Table WebQuest
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<h2>Answer:</h2>

What does Atomic number represents ___________.  

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5 0
3 years ago
Naturally occurring zirconium exists are five isotopes. axe with a mass of 89.905 u(51.45%); Zr with a mass of 90.906 u (11.22%)
Anton [14]
Isotope 1: 89.905 * 51.45 = 4625.61225 / 100 = 46.2561225
Isotope 2: 90.906 * 11.22 = 1019.96532 / 100 = 10.1996532
Isotope 3: 91.905 * 17.15 = 1576.17175 / 100 = 15.7617075
Isotope 4: 93.906 * 17.38 = 1632.08628 / 100 = 16.3208628
Isotope 5: 95.908 * 2.08 = 268.5424 / 100 = 2.685424

46.2561225 + 10.1996532 +  15.7617075 + 16.3208628 + 2.685424 = 91.22377
actual mass Zr = about 91.22
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