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Eddi Din [679]
3 years ago
11

Hydrophobic compounds dissolve in

Chemistry
1 answer:
Anastaziya [24]3 years ago
4 0
Hydrophobic molecules tend to be nonpolar molecules that group together to form micelles rather than be exposed to water. Hydrophobic molecules typically dissolve in nonpolar solvents (e.g., organic solvents).
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A student receives 83.2 points, 44.6 points, 74.4 points, and 52.3 points on each of four tests. Determine the student’s test av
Leya [2.2K]

Answer:

Average = 63.6

Explanation:

Average : The average of the given set of points can be calculated by dividing sum of the total point to the number of points.

Average =\frac{Sum\ of\ points}{Number\  of\ points}

The points that are given in this equation are:

83.2 , 44.6 , 74.4 , 52.3 .

These are 4 in number . So average is

Average =\frac{Sum\ of\ points}{Number\  of\ points}

Average =\frac{83.2+44.6+74.4+52.3}{4}

Average =\frac{254.5}{4}

Average =63.625

Significant digits : It is the number of digits that carry meaningful value to a measurement. The rules for counting number of significant digits are:

1. all non-zero digit are significant

2.Any zero between two non-zero are also significant.(305 = 3 significant digit )

3. Zero before the decimal are non-significant (0.003 = only 1 significant digit)

Zero after decimal are significant (3.00 has 3 significant digit)

4.Zero after non - zero digit is non significant (300 has 1 significant digit).

Significant digits in division :

The answer should have the significant digits that are least in any of number(83.2 , 44.6 , 74.4 , 52.3 )

All have = 3 significant digits.

So least numner of significant digit =3

Answer should have total = 3 significant digits

So,

Average = 63.6

3 0
3 years ago
Calculate the half-life of different radioactive sources.
otez555 [7]
The rate at which a radioactive<span> isotope decays is measured in </span>half-life. The termhalf-life<span> is defined as the time it takes for one-</span>half<span> of the atoms of a </span>radioactive material<span> to disintegrate. </span>Half-lives<span> for </span>various radioisotopes<span> can range from a few microseconds to billions of years.
</span>.
back at it again with that answer
.
zane
7 0
3 years ago
How to convert f to c without a calculator ​
nikdorinn [45]

Answer:

Without a calculator, there are many means to convert Celsius to Fahrenheit. Multiply the Celsius temperature by 1.8 and add 32 to get the Fahrenheit conversion With this method you get the exact temperature conversion degree.

Explanation:

7 0
3 years ago
An isotope contains 47 protons, 47 electrons, and 60 neutrons. What is the identity ok the isotope.
Gekata [30.6K]

Answer is: the identity of the isotope is silver (Ag-107).

p⁺(isotope) = 47; number of protons in isotope.

Z = p⁺; atomic number.

Atomic number is the number of protons, which is characteristic of a chemical element, silver is an element with atomic number 47.

n°(isotope) = 60; number of neutrons in isotope.

A = p⁺ + n°; mass number is the total number of protons and neutrons in a nucleus.

A = 47 + 60.

A = 107.

6 0
3 years ago
Read 2 more answers
Magnesium and nitrogen react in a combination reaction to produce magnesium nitride: 3 Mg + N2 → Mg3N2 In a particular experimen
Dafna11 [192]

Answer:

The mass of Mg consumed is 23.76 g.

Explanation:

Magnesium and nitrogen react as : three moles of magnesium reacts with one mole of nitrogen to give one mole of magnesium nitride.

as given that the mass of nitrogen reacted = 9.27 g

moles of nitrogen reacted = \frac{mass}{molarmass}=\frac{9.27}{28}=0.33

Thus moles of magnesium reacted = 3 X 0.33 = 0.99 moles

mass of Mg reacted = moles X atomic mass = 0.99 X 24 = 23.76 grams

5 0
3 years ago
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