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andrew11 [14]
3 years ago
11

an unknown sample with a mass of 50.0 grams changes from an initial temperature of 22.5°C to a final temperature of 32.4°C. It i

s known that the sample absorbed 444 J and f heat l. Bases on this information, what substance in the table is most likely the identity of this sample?​

Chemistry
1 answer:
makvit [3.9K]3 years ago
7 0

Answer:

Aluminum

Explanation:

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Do gases have mass and weight?​
slega [8]

Answer:

yes

Explanation:

they di because they have mass and wait

7 0
3 years ago
What do the objects in motion have in common ​
Alona [7]

Answer:

All objects in motion do posses kinetic energy.

Explanation:

6 0
3 years ago
How many liters of water vapor are in 36.21 g?
Elden [556K]

Answer:

45.02 L.

Explanation:  

  • Firstly, we need to calculate the no. of moles of water vapor.
  • n = mass / molar mass = (36.21 g) / (18.0 g/mol) = 2.01 mol.
  • We can calculate the volume of knowing that 1.0 mole of a gas at STP occupies 22.4 L.

<em><u>Using cross multiplication:</u></em>

1.0 mole of CO occupies → 22.4 L.

2.01 mole of CO occupies → ??? L.

∴ The volume of water vapor in 36.21 g = (22.4 L)(2.01 mole) / (1.0 mole) = 45.02 L.

4 0
3 years ago
How many moless is 4.91x10^22 molecules of H3PO4?
Lynna [10]
1 mol = 6.023x10^23 number of molecules (Avogadro's number)

1 : 6.023x10^23
X : 4.91x10^22

(6.023x10^23)X = 4.91x10^22

X = 4.91x10^22/6.023x10^23

X = 0.082 Moles
6 0
3 years ago
How many boron atoms are in BF3?
yaroslaw [1]

BF3 has a boron atom with three outer-shell electrons in its ground state and three fluorine atoms containing seven outer electrons. Further, if we observe closely, one boron electron is unpaired in the ground state. During the formation of this compound, the 2s orbital and two 2p orbitals hybridize.

Name of the Molecule: Boron Trifluoride

Molecular Formula: BF3

Geometry: Trigonal Planar

3 0
3 years ago
Read 2 more answers
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