Who is Anthony sanchez- hirem

Chemistry

1 answer:

Ivahew [28]4 years ago

8 0

He was convinced of murder back in 2006, and his appeal for a retrial that was denied.

You might be interested in

Find the amount of red food coloring (in grams) necessary to add to 50 grams of water to prepare a 15% solution of red food colo

olga nikolaevna [1]

Answer:

9 grams

Explanation:

Percentage is a concentration unit that describes the amount of a solute in 100 parts of total substance (solution).

The weight percent of a solution is given by the formula:

% (w/w) = (mass of solute / mass of solution) × 100

Here, the red food coloring is the solute, water is the solvent, and the solution is the mixture.

You know the mass of water (50 g) and the percentage (15%), thus you can calculate the mass of red food coloring (x) in this way:

1. Mass of solution

Mass of solution = mass of red food coloring + mass of water

mass of solution = x + 50

2. Percent

$%=x/(x+50)\times 100=15$ % = x / (x + 50) × 100 = 15

3. Solve for x:

x / (x + 50) = 0.15

x = 0.15(x + 50)

x = 0.15x + 7.5

0.85x = 7.5

x = 8.82 g

Round to two one significant figure, because the number 50 grams has one significant figure.

x = 9 grams.

8 0

4 years ago

The question is on the picture.

nydimaria [60]

Density is typically the best way to determine the chemical property because almost always it is unique.

6 0

3 years ago

Does pb(no3)2 + Na3(PO4) = Pb3(PO4)2 + Na(NO3) have a precipitate?

ipn [44]

Answer:

Yes, Pb3(PO4)2.

Explanation:

Hello there!

In this case, according to the given balanced chemical reaction, it is possible to use the attached solubility series, it is possible to see that NaNO3 is soluble for the Na^+ and NO3^- ions intercept but insoluble for the Pb^3+ and PO4^2- when intercepting these two. In such a way, we infer that such reaction forms a precipitate of Pb3(PO4)2, lead (II) phosphate.

Regards!