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Maslowich
4 years ago
12

When are tides highest?

Chemistry
1 answer:
rosijanka [135]4 years ago
7 0
A neap tide is the highest tide there is, this is due to the position of the moon,since the moon and sometimes the earth are what cause the tides in the ocean.
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Which type of matter needs to be separated by chemical methods ( breaking of bonds required ) such as electrolysis or decomposit
Irina18 [472]

The correct answer is compound.  

The compounds comprise two or more elements, which are bonded together chemically, and can be dissociated, that is, distinguished by reforming and breaking the chemical bonds, by the decomposition reactions, like thermal decomposition or electrolysis. The process of decomposition generate simpler compounds or individual elements.  


6 0
3 years ago
Small children are occasionally injured when they try to inhale helium from
sattari [20]

Answer:

260 moles of Helium

Explanation:

V = 50L

T = 20°C = (20 + 273.15)K = 293.15K

P = 125 atm

R = 0.082 L.atm / mol. K

n = ?

From ideal gas equation,

PV = nRT

P = pressure of a given gas

V = volume it occupies

n = number of moles

R = ideal gas constant

T = temperature of the gas

PV = nRT

n = PV / RT

n = (125 * 50) / (0.082 * 293.15)

n = 6250 / 24.0383

n = 260.00 moles

The child inhaled 260 moles of Helium

8 0
3 years ago
So when dealing with molar mass when do you know to round up
aniked [119]

The first rule is to use four digits in atomic weights and consider the calculated formula or molar mass as given with four significant digits. This rule is appropriate for beginners but has some disadvantages.

The second rule is to use all digits in the recommended atomic weights and to estimate the accuracy of the result from the number of decimal places or significant digits in these.

The third rule is to use all digits in the recommended atomic weights and to calculate the absolute maximum uncertainty of the result from the recommended uncertainties of the atomic weights. The uncertainty is rounded up to one (two) significant digit(s), and the formula or molar mass is rounded to the same absolute accuracy as the rounded uncertainty.

8 0
3 years ago
Electrical conductivity is an example of what property
Anika [276]
<span>melting point-electrical conductivity-color-<span>density
please mark as brainliest

</span></span>
3 0
3 years ago
Read 2 more answers
How many moles are there in 987 grams of Ra(OH)2? id also love to know the simplest equation for converting moles --&gt; so i co
OlgaM077 [116]
Mole = \frac{mass}{molar mass}

Mass of Radium Hydroxide = 987g
Molar Mass of Ra(OH) _{2} = ((226) + (2 * 16) + (2 * 1))
                                            =  260 g / mol

∴  Moles of <span>Ra(OH) _{2} = </span>\frac{987 g }{ 260 g / mol }
                                            = 3.796 mols
6 0
3 years ago
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