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insens350 [35]
3 years ago
6

Explain why boats can float when they are made out of material that is more dense than water? Your answer must include informati

on about the buoyant force.
Chemistry
1 answer:
cluponka [151]3 years ago
5 0
I need help to cause it asked me that questions
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Potassium Oxide + Calcium Chlorate react to form what (double replacement)
Dennis_Churaev [7]
They would react to form:

Potassium Chlorate + Calcium Oxide

Here is an attachment with the skeleton equation and balance:


3 0
3 years ago
What are the exceptions to the periodic trends in ionization energy?
Verdich [7]

Answer:

The exceptions to the periodic trends in ionization energy are the first ionization energy of beryllium is higher than that of boron and the first ionization energy of nitrogen is also higher than that of oxygen.

Explanation:

Taking a close look at the figure of first ionization energies, it clearly shows that the first ionization energy of beryllium is higher than that of boron and the first ionization energy of nitrogen is also higher than that of oxygen.

This is as a result of Hund's rule and electron configuration. For example,  the first ionization potential electron of beryllium is obtained from a 2s orbital while that of boron comes from a 2p electron. However, for oxygen and nitrogen, their electrons are obtained from 2p orbitals. While spin is uniform for all 2p electrons of nitrogen, it is different for oxygen.

7 0
3 years ago
An object becomes positively charged when it
ludmilkaskok [199]
A. loses electron, bc electrons are negatively charged, protons are positively charged, when electrons are lost, that means there are more protons more
5 0
3 years ago
Read 2 more answers
A 10.00 g sample of a compound containing only carbon, hydrogen, and oxygen forms 23.98 g CO2 and 4.91 g H2O upon complete combu
yanalaym [24]
We can determine the empirical formula by first converting each of the grams to moles. remember to do this, first, we need the molar mass of the molecules which can be calculated by adding the mass of the atoms from the periodic table. 

molar mass of CO2= 44.0 g/mol
molar mass of H2O= 18.02 g/mol

now, lets determine the grams of each atom

Carbon: 23.98 g x (12.011 g / 44.01 g) = 6.54 g C

Hydrogen: 4.91 g x (2.0158 g / 18.02 g) = 0.55 g H

Oxygen: 10.0 - (6.54 + 0.55) = 2.91 g O

Now let's convert each mass to moles.

C: 6.54 g / 12.01 g / mol = 0.54 mol
H: 0.55 g / 1.01 g/mol = 0.54 mol
O: 2.91 g / 16.00 g/mol = 0.18 mol

now that we have the moles of each atom, we need to divide them by the smallest value to find the ration. If you do not get the whole number, you need to multiply until to get a whole number.

C:  0.54 mol / 0.18 mol = 3
H:  0.54 mol / 0.18 mol = 3
O: 0.18 mol / 0.18 mol = 1

empirical formula--> C₃H₃O



4 0
4 years ago
Can you guys please help me I will mark brainliest to whoever answers this right.
Sphinxa [80]
Wants: a stove top- you don’t need it to make food but it’s more convenient.
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Needs: sun- we need the sun to stay warm and live and to keep earth living.
Needs:our heat- we need the heat our body provides to live and function
7 0
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