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Reptile [31]
3 years ago
11

How is energy transferred when objects are in contact A. Conduction B. Convection C. latent heat D. Radiation​

Chemistry
1 answer:
netineya [11]3 years ago
7 0
Your answer is conduction, If there is a difference in temperature between two objects, energy is transferred from the hotter object to the cooler one. ... Energy can be transferred from a hot object to a cooler one.
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Which choice lists the correct order of the coefficients of each substance in the following neutralization reaction when the equ
inessss [21]
I got a 4 out of 1. not 100 percent sure if this is the right answer but i put 1,2,1,2
3 0
3 years ago
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Alguien saber esto? Literal no se este material
Vikki [24]

Answer:

2. 389.15K , 3. 229.15K

Explanation:

K-273.15 = °C

3 0
3 years ago
The molar mass of an unknown material is 78.430 g/mol. What is the mass of half of a mole of the unknown material?
krek1111 [17]

Answer:

hoy

Explanation:

6 0
3 years ago
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Kemmi pipets 25.00 ml of pure 1-propanol (c3h7oh, a liquid organic alcohol) into a 100.0 ml volumetric flask. she dilutes it wit
algol13
Q1)
As Kemmi pipettes a volume of 25.00 ml of the solution
density of pure propanol is 0.803 g/ml
This means that in 1000 ml of solution - 0.803 g of pure propanol
Therefore in 25.00 ml of solution - 0.803 g x 25.00 ml / 1000 ml
                                                     = 0.0201 g
Using molar mass, number of moles can be calculated= 0.0201 g / 60.09 g/mol
                                                                                       = 3.35 x 10⁻⁴ mol
therefore the number of pure propanol moles in exactly 25.00 ml is
3.35 x 10⁻⁴ mol

Q2)
molarity is the concentration of the solution. It can be defined as the number of moles of solute per liter of solution
we know the number of moles in 25.00 ml of solution. When its diluted in a 100.00 ml volumetric flask, number of moles remain constant but now the volume over which the moles of solute are dissolved is increased.
therefore number of moles = 3.35 x 10^(-4) mol
volume over which its dissolved - 100.00 / 10³ dm³
                                                    = 1.0000 x10⁻¹ dm³
the molarity = 3.35 x 10⁻⁴ mol / 1.0000 x10⁻¹ dm³
                    = 3.35 x 10⁻³ mol/dm³
5 0
4 years ago
Can somebody help me please! Help would be much appreciated :))
vivado [14]

Answer:

The first picture shows how the two H athoms finds each other. The second one, how these H athoms start's to form a covalent bond describing it by Lewi's estructure. And the last one, shows how the two athoms of H formed an H2 molecula.

Explanation:

7 0
3 years ago
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