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disa [49]
2 years ago
5

Which reactant (X) is missing from the equation shown? X+ PO4 → H3PO4

Chemistry
1 answer:
insens350 [35]2 years ago
3 0

Answer:

H

Explanation:

b/c the polyatomic PO4¯³

have 3 valance number

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Which scientific investigation describes a field study?
weqwewe [10]

Answer:

A. A scientist investigates a mouse's growth in nature by watching the animal.

A field study is a raw collection of data, typically in the natural habit of the organism; hence why an experiment taken in a lab isn't a field study.

7 0
2 years ago
As the temperature of a liquid solvent increases, the amount of solute that can dissolve in it ________. decreases remains const
Nookie1986 [14]
Answer:
              
<span>As the temperature of a liquid solvent increases, the amount of solute that can dissolve in it <u>increases</u>.

Explanation:
                    The solubility of most solutes in a solvent increases with increase in temperature. This solubility is closely related to the heat of solution, (the heat evolved or absorbed when solute is dissolved in solvent). Hence, majority of solutes when dissolved in solvent absorbs heat and makes the overall heat of solution positive. Hence, in this case more heat provided will increase the rate of solubility.</span>
6 0
3 years ago
Louis and Keisha each dropped stones from different heights onto pieces of clay to see how much the clay would be compacted. Lou
katen-ka-za [31]
Yes. it was less clay which causes less area for impact
7 0
3 years ago
The thickness of a 6.00 cm square piece of Al that has a mass of .842 g and a density of 2.70 g/cm^3
lutik1710 [3]
Volume = Mass / Density
Volume =  .842 / 2.70
Volume = .31185 cubic centimeters
Aluminum square * depth = .31185 cubic centimeters
6 * 6 * depth = .31185 cubic centimeters
depth = (.31185 cubic centimeters) / 36
<span><span><span>depth = 0.0086625514 centimeters

(That must be aluminum foil.)

</span> </span></span>





7 0
3 years ago
What is the volume of 0.04 mol of a gas at 0.9 kPa and 20°C?
Annette [7]
A. 108 L is the winner!
7 0
3 years ago
Read 2 more answers
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