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dmitriy555 [2]
3 years ago
7

Which sensory organs help us gather information by seeing things like shapes, colors, and motion around us?

Chemistry
2 answers:
astra-53 [7]3 years ago
5 0

By using eyes we can see shapes, colors, and motion around us.

seropon [69]3 years ago
4 0

Answer:

2nd option: eyes

Explanation:

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What does an atomic number represent in an atom?
seraphim [82]
It represents the number of protons in the nucleus of an atom which determines the chemical properties of an element. 
5 0
3 years ago
Read 2 more answers
In a coffee-cup calorimeter, 50.0ml of 0.100M AgNO3 and50.0ml of 0.100M HCl are mixed to yield the following reaction:
Marina CMI [18]

Answer:

-66.88KJ/mol

Explanation:

It is possible to obtain the heat involved in a reaction using a calorimeter. Formula is:

q = -C×m×ΔT

<em>Where q is heat of reaction, C is specific heat capacity (4.18J/°Cg), m is mass of solution (100.0g) and ΔT is temperature change (23.40°C-22.60°C = 0.80°C)</em>

Replacing:

q = -4.18J/°Cg×100.0g×0.80°C

q = -334.4J

Now, in the reaction:

Ag⁺ + Cl⁻→ AgCl

<em>AgNO₃ as source of Ag⁺ and HCl as source of Cl⁻</em>

Moles that react are:

0.050L× (0.100mol /L) = 0.0050moles

If 0.0050 moles produce -334.4J. Heat of reaction is:

-334.4J / 0.0050moles = -66880J/mol = <em>-66.88KJ/mol</em>

5 0
3 years ago
Use the formula: PV=nRT<br><br> If P=12, V=22.4, R=.0821 and T=100, then what would n=?
Lina20 [59]
PV=nRT \\ (12)(22.4)=n(.0821)(100) \\ 268.8=8.21n \\ 268.8/8.21=8.21n/8.21 \\ n=32.74
n ≈ 32.74
Hope this helps!
7 0
3 years ago
What changes in trade did Europeans hope to bring about by finding sea routes to Asian markets?
Dovator [93]

Answer:

controlled by the Arabs, who brought frankincense and myrrh by camel caravan from South Arabia.

3 0
3 years ago
Potassium and fluorine are both halogens?​
andreev551 [17]

Answer:

false, Potassium and fluorine are not halogens.

only fluorine here is halogen.

potassium is an alkali earth metal it doesn't comes under category of halogens, but fluorine

is a non metal which comes under halogen family.

7 0
2 years ago
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