All categories

3 years ago

How would the group best find out whether their study is worth more time and resources

Chemistry

1 answer:

Hoochie [10]3 years ago

8 0

Answer:

By presenting the results in a poster session.

Explanation:

Several scientists from different countries are asked to examine the results of an experiment before a journal will print it.

You might be interested in

Shown below is a lewis structure of the formamidinium ion. what geometry is exhibited by the two nitrogens in the formamidinium

wel

If that is your picture, then the answer is that

Geometry A is trigonal planar
and Geometry B is trigonal pyramidal

7 0

3 years ago

Read 2 more answers

What do all of the molecules in the table have in common?

dangina [55]

They all have a certain amount of protons electrons and neutrons.

3 0

3 years ago

When 6.040 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 18.95 grams of CO2 and 7.759 grams of H

algol [13]

Answer: The empirical formula is $CH_2$ and molecular formula is $C_4H_8$

Explanation:

We are given:

Mass of $CO_2$ = 18.95 g

Mass of $H_2O$ = 7.759 g

Molar mass of carbon dioxide = 44 g/mol

Molar mass of water = 18 g/mol

For calculating the mass of carbon:

In 44g of carbon dioxide, 12 g of carbon is contained.

So, in 18.59 g of carbon dioxide, = $\frac{12}{44}\times 18.59=5.07g$ of carbon will be contained.

For calculating the mass of hydrogen:

In 18g of water, 2 g of hydrogen is contained.

So, in 7.759 g of water, = $\frac{2}{18}\times 7.759=0.862g$ of hydrogen will be contained.

Mass of C = 5.07 g

Mass of H = 0.862 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{5.07g}{12g/mole}=0.422moles$

Moles of H= $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.862g}{1g/mole}=0.862moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{0.422}{0.422}=1$

For H = $\frac{0.862}{0.422}=2$

The ratio of C : H = 1: 2

Hence the empirical formula is $CH_2$ .

The empirical weight of $CH_2$ = 1(12)+2(1)= 14 g.

The molecular weight = 56.1 g/mole

Now we have to calculate the molecular formula.

$n=\frac{\text{Molecular weight }}{\text{Equivalent weight}}=\frac{56.1}{14}=4$

The molecular formula will be= $4\times CH_2=C_4H_8$

6 0

3 years ago

How many total electrons can there be in the n=4 orbital?

Arturiano [62]

Answer:

the total electron that can be in the n=4 orbital is 32

Explanation:

it is because the formula is 2n^2,if n=4then it is 2(4)^2=32

7 0

4 years ago

2 Which compound has covalent bonds? *<br> O (1) H20<br> (2) Li20<br> (3) Na,o<br> (4) K,0

Leokris [45]

Answer:

1) H2O

Explanation:

this is because there is a bond between two nonmetals, Hydrogen and oxygen, so the bond is covalent. all the other are bonds between a metal and nonmetal so it is ionic.

8 0

3 years ago