2 years ago

Help asapppppppppp plsssssssssssss

Chemistry

2 answers:

trapecia [35]2 years ago

7 0

One there is one atom

tia_tia [17]2 years ago

5 0

There is one N atom

You might be interested in

What is the formula for chromium(iii)hydroxide

Anika [276]

Answer: Cr(OH)3

Explanation:

8 0

3 years ago

Read 2 more answers

What is the mass of insoluble lead(II) iodide (461.0 g/mol) produced from 0.830 g of potassium iodide (166.00 g/mol) and aqueous

VikaD [51]

Answer:

Explanation:

7 0

2 years ago

The enthalpy of solution (dissolving) of sodium hydroxide is given below. Determine the change in temperature of a coffee cup ca

geniusboy [140]

Answer:

The change in temperature of a coffee cup calorimeter is 8.87°C.

Explanation:

Volume of the water = V = 150 g

Density of the water , d =1.0 g/mL

Mass of the water = M

$M=d\times V=1.00 g/mL\times 150 ml =150.0 g$

Mass of solution = m = M = 150.0 g

$NaOH(s)\rightarrow NaOH(aq),\Delta H =-44.51 kJ/mol$

Moles of NaOH = $\frac{5.00 g}{40 g/mol}=0.125 mol$

Energy released when 0.125 moles of NaOH added in water = Q

$Q=0.125 moles\times (-44.51 kJ/mol)=-5.5638 kJ=-5,563.8 J$

1 kJ = 1000 J

Heat gained by water = Q' = -Q ( conservation of energy)

$Q'= 5,563.8 J$

Specific heat of solution = c = 4.184 J/g°C

Change in temperature of the solution = $\Delta T$

$Q'=mc\times \Delta T$

$5,563.8 J=150.0 g\times 4.184 J/g^oC\times \Delta T$

$\Delta T=\frac{5,563.8 J}{150.0 g\times 4.184 J/g^oC}=8.87^oC$

The change in temperature of a coffee cup calorimeter is 8.87°C.

7 0

3 years ago

What major events cause islands to form in the pacific ocean

zmey [24]

One of the major events is Volcanos etc...

4 0

3 years ago

Read 2 more answers

Which equation represents sublimation?<br> 2Al+3I=2AlI<br> HgCl=HgCl

AlexFokin [52]

I guess it is the second one but you missed the state symbols.

4 0

2 years ago