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creativ13 [48]
3 years ago
14

how many grams og gas must be relased from a 45.2 L sample of N2 at STP to reduce the volume to 45.0 L at stop

Chemistry
2 answers:
patriot [66]3 years ago
6 0

Answer:54,6

Explanation:

weqwewe [10]3 years ago
5 0

Answer:

yes it is 54,6

Explanation:

54,6 you ar correct you did a graet job

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How many moles of water are contained in 0.250 mol of cuso4 5h2o?
Mamont248 [21]
1 mol CuSO₄·5H₂O ----------- 5 mol H₂O
0,25 mol CuSO₄·5H₂O ---- Xmol H₂O
X = 5×0,25 = 1,25 mol H₂O
3 0
3 years ago
Various metals are essential for human health. One such example is iron. Insufficient amounts of iron can lead to anemia, causin
Genrish500 [490]

The density of the patient's hemoglobin in their blood in units of g/ml = 0.2g/mL

<h3>Calculation of hemoglobin density</h3>

Hemoglobin is the red blood cell pigment that transports oxygen to the body cells.

1 gram of hemoglobin = 2.15mg

Blood volume of the patient is = 4.9ml

Density= mass/volume

Therefore the density of patients hemoglobin= 1/4.9 = 0.2g/mL

Learn more about hemoglobin here:

brainly.com/question/8197071

5 0
2 years ago
Given the density of iron (Fe) is 7.87 g/cm3, determine the mass of iron (in grams) in a rectangle block with the dimensions of
guapka [62]

Answer:

m=14,105.71 g Fe

Explanation:

Hello,

In this case, the first step is to compute the volume of the block considering the length, height and width:

V=L \times W \times H =12.5 in\times 3.50 in \times 2.50 in =109.375 in^3

Then, we compute the volume in cubic centimetres:

V=109.375in^3\times \frac{16.3871 cm^3}{1in^3} =1792.34cm^3

Finally, as the density is given by:

\rho =\frac{m}{V}

We solve for the mass:

m=\rho \times V= 7.87\frac{g}{cm^3} \times 1792.34 cm^3\\\\m=14,105.71 g Fe

Best regards.

8 0
3 years ago
What is formed when two liquids are combined but do not mix?
frozen [14]

Answer:

When two liquids combine to form a new liquid, we call the liquids “miscible.” When two liquids do not mix together and instead form layers, we call them “immiscible.” The chemical properties of the liquids will determine if they will mix or not.

Explanation:

8 0
3 years ago
Read 2 more answers
An ball with a weight of 0.5 kg is sitting on a shelf that is 3 meters high. Help me! This is 8th grade sci btw.
Alex_Xolod [135]

Complete question:

A ball with a weight of 0.5 kg is sitting on a shelf that is 3 meters high. What is the gravitational potential energy of the ball ?

Help me! This is 8th grade sci btw

Answer:

the gravitational potential energy of the ball is is 14.7 J.

Explanation:

mass of the ball, m = 0.5 kg

height above the ground on which the ball is sitting, h = 3 m

The gravitational potential energy of the ball is calculated as follows;

P.E = mgh

P.E = 0.5 x 9.8 x 3

P.E = 14.7 J

Therefore, the gravitational potential energy of the ball is is 14.7 J.

7 0
3 years ago
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