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MakcuM [25]
3 years ago
9

When using a dichotomous key to identify organisms what do we look at

Chemistry
1 answer:
Inga [223]3 years ago
3 0

Answer:

a. physical features

Explanation:

google

{and my biology teacher is <u><em>awesome</em></u> ❌}  

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Need help on this question asap pleasee
algol [13]

Answer:

9.0 moles of CaO

Explanation:

We have the reaction equation as follows;

Fe2O3 + Ca3(PO4)2 -------> 2FePO4 + 3CaO

Now we know from the equation that;

1 mole of iron III oxide yields 3 moles of CaO

Therefore;

3 moles of iron III oxide yields 3 * 3/1

= 9.0 moles of CaO

6 0
2 years ago
Determine the pH of a 0.048 M hypochlorous acid (HClO) solution. Hypochlorous acid is a weak acid (Ka = 4.0 ✕ 10−8 M).
storchak [24]

pH of 0.048 M HClO is 4.35.

<u>Explanation:</u>

HClO is a weak acid and it is dissociated as,

HClO ⇄ H⁺ + ClO⁻

We can write the equilibrium expression as,

Ka = $\frac{[H^{+}] [ClO^{-}]  }{[HClO]}

Ka = 4.0 × 10⁻⁸ M

4.0 × 10⁻⁸ M = $\frac{x \times x }{0.048}

Now we can find x by rewriting the equation as,

x² =  4.0 × 10⁻⁸ × 0.048

   = 1.92 × 10⁻⁹

Taking sqrt on both sides, we will get,

x = [H⁺] = 4.38 × 10⁻⁵

pH = -log₁₀[H⁺]

     = - log₁₀[ 4.38 × 10⁻⁵]

   = 4.35

8 0
3 years ago
Please help me out !!
raketka [301]
27Hq)+3816(7/ 23q09)
8 0
2 years ago
Calculate the speed of a wave with a wavelength of 6 meters and a frequency of 3 hertz.
Kruka [31]

The answer is 18 you multiply wavelength (6) times frequency (3)
3 0
2 years ago
Read 2 more answers
How many acetyl coa molecules may be obtained from oxidation of an 18-carbon fatty acid?
saveliy_v [14]
The answer would be 9
7 0
3 years ago
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