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3 years ago

Hhzhxhhxhxhxhxhhxhxhxhxhxhhxhdhhdhdh

Chemistry

2 answers:

Vadim26 [7]3 years ago

5 0

Hhzhxhhxhxhxhxhxhxhxhxhxhxhxhxhdhhdhdhdh

podryga [215]3 years ago

4 0

Answer:

What does that even mean?

Explanation:

You might be interested in

Butane is also a molecular compound. what is its formula? how many atoms does it contain?

pishuonlain [190]

The formula of butane is C4H10 but I don't how many atoms it contains though

5 0

4 years ago

W do I find the family # and the period # for aluminum on the periodic table

Sati [7]

Answer:

Aluminum is the 13th element on the periodic table. It is located in period 3 and family 13.

Explanation:

3 0

3 years ago

Linda performed the following trials in an experiment. Trial 1: Heat 30.0 grams of water at 0 °C to a final temperature of 40.0

nexus9112 [7]

Answer: The correct answer is Option b.

Explanation:

To calculate the amount of heat absorbed or released, we use the following equation:

$q=mc\Delta T$ .....(1)

where, q = amount of heat absorbed or released.

m = mass of the substance

c = heat capacity of water = 4.186 J/g ° C

$\Delta T$ = Change in temperature

For Trial 1:

We are given:

$m=30g\\\Delta T=[40-0]^oC=40^oC\\q=?J$

Putting values in equation 1, we get:

$q=30g\times 4.186J/g^oC\times 40^oC$

q = 5023.2 J

For trial 2:

We are given:

$m=40g\\\Delta T=[40-30]^oC=10^oC\\q=?J$

Putting values in equation 1, we get:

$q=40g\times 4.186J/g^oC\times 10^oC$

q = 1674.4 J

Heat gained by Trial 1 than trial 2 = $(5023.2-1674.4)J=3347J$

Hence, the amount of heat gained in Trial 1 about 3347 J more than the heat released in Trial 2.

Thus, the correct answer is Option b.

4 0

3 years ago

How many electrons can be described by the quantum numbers n = 3, l = 3, ml = 1?

Oksana_A [137]

There are a total of four quantum numbers that govern the electrons. These are the principal quantum number (n), the angular quantum number (l), the magnetic quantum number (ml) and lastly the spin quantum number (ms). Each electron has a unit set of the four quantum numbers.

Since the first 3 quantum numbers is already specified, so the remaining to be filled is the ms quantum number which can only have values of +1/2 and -1/2. So we have 2 electrons.

Answer:

2 electrons

8 0

3 years ago

Write 2,469,100 in Engineering Notation with 3 significant figures.

Gala2k [10]

Answer: $2.47\times 10^{6}$

Explanation:

Engineering notation : It is the representation of expressing the numbers that are too big or too small and are represented in the decimal form times 10 raise to the power. It is similar to the scientific notation but in engineering notation, the powers of ten are always multiples of 3.

The engineering notation written in the form:

$a\times 10^b$

where,

a = the number which is greater than 0 and less than 999

b = an integer multiple of 3

Now converting the given value of 2,469,100 into engineering notation, we get $2.47\times 10^{6}$

Hence, the correct answer is, $2.47\times 10^{6}$

6 0

3 years ago