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arlik [135]
3 years ago
5

(Forensics)Quick!! Can someone write me a story on a blood spatter crime scene i can use? Story needs to be descriptive & co

ntain 4 different blood spatter patterns
Patterns to use:
Transfer
Trail
Passive
Cast-off

Chemistry
1 answer:
Vikentia [17]3 years ago
6 0

Answer:

What can you learn from blood spatter? You can learn the origin of stain, direction of impact, speed, position of victim and assailant, number of blows, shots.

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The mass of 2.50 moles of calcium fluoride (CaF2) is how many grams ?
emmasim [6.3K]

Answer:

195.199grams

Explanation:

Fluorine has a molar mass of 18.99984 while calcium has a molar mass of calcium is 40.08.

1 mole of  calcium fluoride has a mass of 40.08+2×18.99984

=78.0797 grams

if one mole has a mass of 78.0797 grams, then 2.5 moles have:

2.5 moles× 78.0797 grams/mole= 195.1992 grams

3 0
4 years ago
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Which type of energy warms Earth’s surface?
Alex73 [517]

Answer:

infared radiation

Explanation:

7 0
3 years ago
A system contains bonds between particles. Which choice describes the microscopic structures of the energy in this system? There
borishaifa [10]

Answer:

The correct answer is: <em>There must be potential energy in the bonds due to its particles position.</em>

Explanation:

Potential energy is a kind of energy which is stored in an object due to its position or configuration. For example, if there is a ball in the fifth floor of a building, it has a determined potential energy which is converted to kinetic energy when the ball fall down. The same is in the case of the chemical bonds: the particles or atoms have potential energy related to their relative positions in the system. In fact,  chemical energy is considered a form of potential energy (stored in chemical bonds).

8 0
4 years ago
Convert 1.3902 hectoliters to centiliters.
hram777 [196]
<span>The answer is 13,902 centiliters.

</span>
8 0
4 years ago
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For the mineral torbernite, Cu(UO2)2(PO4)2⋅8H2O, determine the total number of atoms in one formula unit
ASHA 777 [7]

Answer:

2.47x10^{25}atoms

Explanation:

Hello,

In this case, since the mineral torbernite has one copper atom, two uranium atoms, twenty oxygen atoms (2x2+4x2+8), two phosphorous atoms and sixteen hydrogen atoms (12x2) and therefore forty one in total, by using the Avogadro's number one is able to compute the total number of atoms in one formula unit or one mole:

Atoms=1molCu(UO_2)_2(PO_4)_2\dot \ 8H_2O*\frac{41mol\ of \ atoms}{1molCu(UO_2)_2(PO_4)_2\dot \ 8H_2O}*\frac{6.022x10^{23}atoms}{1mol\ of \ atoms}  \\\\=2.47x10^{25}atoms

Best regards.

6 0
3 years ago
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