Which trait is found in early embryos of both birds and humans, but then disappears from each during development?

Convert to moles:<br> 100.0g Ca3(PO4)2

salantis [7]

Answer:

0.322 moles

Explanation:

Given Mass, m = 100 g

The molar mass of Ca₃(PO₄)₂

Ca₃(PO₄)₂ = (3 x 40.08) + (2 x 30.97) + (8 x 16.00)

M = 310.18 g/mol

Let there are n number of moles,

n = given mass/ molar mass

$n=\dfrac{100 }{310.18 }\\\\n=0.322\ mol$

So, there are 0.322 moles.

6 0

3 years ago

If 5.0g nitrogen dioxide completed reacted, how many grams of nitric acid would form?

lyudmila [28]

Answer:

71847284737283774737373737

6 0

2 years ago

Answer the lab question (“what is the effect of temperature on the solubility of a solid in a liquid?”) with a hypothesis:

poizon [28]

<span> If the temperature of the liquid is increased, then more sugar will dissolve, because warm solutions hold more solute than cold solutions.</span>

5 0

4 years ago

Read 2 more answers

Four gases were combined in a gas cylinder with these partial pressures: 3. 5 atm N2, 2. 8 atm O2, 0. 25 atm Ar, and 0. 15 atm H

aksik [14]

The total pressure of the gas has been 11.9 atm.

The partial pressure has been the pressure exerted by the individual gas in the mixture.

According to the Dalton's law of Partial pressure, the pressure of the gas has been the sum of the partial pressure of each gas in the mixture.

<h3 /><h3>Computation for the pressure of gas</h3>

The given gas has partial pressure of Nitrogen, $P_{N_2}=3.5\;\rm atm$