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Ivan
3 years ago
9

What is it called when Light changes direction and slows down when it enters water from air.

Chemistry
2 answers:
Zepler [3.9K]3 years ago
8 0

Answer:

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line.

Explanation:

scoray [572]3 years ago
5 0
This should be called refraction
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A student measures the mass of a clean, dry flask and stopper is measured using a laboratory balance. The mass of the empty stop
Jobisdone [24]

Answer:

Volume of flask = 29.134 cm³

Explanation:

Mass of water = mass of filled stoppered flask - mass of empty stoppered flask.

Mass of water = 65.858 - 36.724 = 29.134 g

Density of water = 1 g/cm³

Volume = mass/ density

Volumeof water = 29.134 g/ 1g/cm³ = 29.134cm³

Therefore, volume of flask = 29.134 cm³

7 0
3 years ago
Read 2 more answers
How many magnesium atoms are contained in 3.75 moles of magnesium?
Katarina [22]
In 1 mole of magnesium there are Avogadro's number of atoms are present.
Avogadro's number = 6.023 x 10²³ 
1 mole = 6.023 x 10²³ atoms
3.75 moles = 3.75 x 6.023 x 10²³ 
=2.26 x 10²⁴
So, in 3.75 moles of magnesium there are 2.26 x 10²⁴ atoms of magnesium are present.
7 0
4 years ago
For chemical reactions involving ideal gases, the equilibrium constant K can be expressed either in terms of the concentrations
miskamm [114]

Answer:

K_p= 3966.01

Explanation:

The relation between Kp and Kc is given below:

K_p= K_c\times (RT)^{\Delta n}

Where,  

Kp is the pressure equilibrium constant

Kc is the molar equilibrium constant

R is gas constant

T is the temperature in Kelvins

Δn = (No. of moles of gaseous products)-(No. of moles of gaseous reactants)

For the first equilibrium reaction:

2CH_4_{(g)}\rightleftharpoons C_2H_2_{(g)}+3H_2_{(g)}

Given: Kc = 0.140

Temperature = 1778 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (1778 + 273.15) K = 2051.15 K  

R = 0.082057 L atm.mol⁻¹K⁻¹

Δn = (3+1)-(2) = 2  

Thus, Kp is:

K_p= 0.140\times (0.082057\times 2051.15)^{2}

K_p= 3966.01

6 0
3 years ago
I'll give brainliest
ss7ja [257]

Answer:

b,d,f

Explanation:your welcome give brainilest

8 0
3 years ago
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How do you find the mass number of an element
sesenic [268]

Answer:

add up the mass of protons and neutrons

Explanation:

8 0
3 years ago
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