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3 years ago

How do you know something is there if you can't see it?

Chemistry

2 answers:

gavmur [86]3 years ago

5 0

Answer:

we know that someone or something is near us even when we cant see it you see our self conscious minds can pick up on the slightest detail even when we dont pick up on it also you can thank the six senses as well for why we can tell something or someone is there

Explanation: i watch criminal minds and pay attention to the random facts spencer reid spits out

aliina [53]3 years ago

3 0

Answer:

Explanation:

Use your other senses such as touch or smell, does it react in different temperatures, is it then visible under a microscope, does it react with different elements or gases? Think outside the box.

You might be interested in

When 2.50 grams of copper reacts with oxygen?

ycow [4]

Mass oxigen = 2.81 - 2.50 = 0.31 g
Moles O = 0.31 g / 15.9994 g/mol =0.0194

moles Cu = 2.50 g / 63.546 g/mol =0.0393

we divide by the smallest number
0.0194 / 0.0194 = 1 => O
0.0393 / 0.0194 = 2 => Cu
the formula is Cu2O ( Copper (I) oxide )
Ya got this

7 0

3 years ago

Enough water was added to ten grams of sugar

vfiekz [6]

Answer:

25 grams (25g) of sugar

Explanation:

We can set this up algebraically:

10g = 2L

÷ 2 ÷ 2

5g = L

meaning that 5 g are needed to make 1 L

So, if we have 5 L, we will need (5 × 5) 25 grams to produce the same concentration.

6 0

2 years ago

If 2 compounds have the same empirical formula, they are the same (same properties, structure, etc.) *

Oliga [24]

Answer:

False

Explanation:

6 0

3 years ago

Write the name of the following compound: H3PO4

bixtya [17]

Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a mineral acid with the chemical formula H3PO4

7 0

3 years ago

Read 2 more answers

Compute diffusion coefficients for the interdiffusion of carbon in both (a) α-iron (BCC) and (b) γ-iron (FCC) at 800.˚C. Assume

Ne4ueva [31]

Answer:

a)1.404 E-10 m^2/s

b)1.438 E-12 m^2/s

Explanation:

Diffusion Coefficients can be calculated at different temperatures taking into account the energy of the diffusive process, remember that this process takes place in the interstices of the solid, and gets with higher temperatures due to the higher kinetic energy of the particles.

$D=D_{o} *exp(-Q/RT)$

a) For α-iron (BCC)

$D=1.10*10^{-6} m^{2}/s *exp(-80.0kJ/mol/8.314*10^{-3}kJ/mol*k*1073.15K)= 1.404*10^{-10} m^{2}/s$

b) For γ-iron (FCC)

$D=2.30*10^{-5} m^{2}/s *exp(-148.0kJ/mol/8.314*10^{-3}kJ/mol*k*1073.15K)= 1.438*10^{-12} m^{2}/s$

5 0

3 years ago