The reaction between sodium
and chlorine is NaCl which is physical change
Answer:
The correct answer is 4
Explanation:
Boron trifluoride (BF₃) has a molecular geometry (as shown in the image in the question) referred to as trigonal planar; this is because each of the the fluorine atoms/molecules (bonded to the central boron atom) is placed in such a way that they form the three "end points"/"domains" of an equilateral triangle. Hence, the correct option is the last option.
The answer that i found is 4.650
HA and HB are present in concentrations of 0.182 M and 0.153 M, respectively.
<h3>What kind of acids are monoprotic?</h3>
Monoprotic acids include benzoic acid (C6H5CO2H), acetic acid (CH3CO2H or HOAc), nitric acid (HNO3), and hydrochloric acid (HCl).
<h3>How can you tell if a substance is monoprotic?</h3>
Any acid with only one hydrogen atom in its formula is called a monoprotic acid, while some acids with multiple hydrogen atoms may also fall under this category. In other words, while all monoprotic acids contain only one hydrogen, not all single-hydrogen acids are monoprotic.
<h3>Do monoprotic acids have a low acidity?</h3>
Because it easily loses its hydrogen ion in solution, the monoprotic acid HBr is regarded as being strong.
learn more about monoprotic acid here
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Answer:
0.00015dm³
Explanation:
the equation gives
C + O2 — CO2
40min × 60s/1min = 2400s
0.70g/s ÷ 2400s =0.00029g
no of mole = mass/molar mass
molar mass of Co2 = 44g/mol
no of mole = 0.00029/44 = 6.59×10^-6mol
volume at STP since its a gas
1 mol — 22.4dm³
6.59×10^-6 — 22.4×6.59×10^-6/1 = 0.00015dm³
*this is the only way i could think of so am not 100% sure
