All categories

3 years ago

What are communities doing to prepare for this hazard? Hurricane

Chemistry

2 answers:

love history [14]3 years ago

6 0

Answer:

they board up the windows evacuate sometimes and barricade doors

Explanation:

Georgia [21]3 years ago

4 0

Places that usually get hurricanes have basements and they have it all prepared before it hits.

You might be interested in

Is the movement of plates to form land masses is called plate tectonics

joja [24]

Yes the movement of land forms is called the movment of plate tectonics. :) plz thnk me

4 0

4 years ago

What Element is H?<br> a. Calcium<br> b. copper<br> c. Tin<br> d. aluminum

Vsevolod [243]

B is the answer here

8 0

3 years ago

What is the ground state electron configuration for B3+ ?

Arisa [49]

The ground state electron configuration is the arrangement of electrons around the nucleus of an atom with lower energy levels. The electrons occupying the orbitals of varying energy levels naturally falls towards the lowest energy state or ground state.

5 0

3 years ago

Two solutions, initially at 24.69°C, are mixed in a coffee cup calorimeter (Ccal = 105.5 J/°C). When a 200.0 mL volume of 0.100

Lana71 [14]

Answer:The correct answer is option c.

Explanation:

$AgNO_3+NaCl\rightarrow AgCl+NaNO_3$

Specific heat of water = 4.18 J/g°C

Density of water = 1 g/ml

Mass of $AgNO_3$ solution ,m'= $1 g/ml\times 200 ml= 200 g$

Mass of $NaCl$ solution ,m''= $1 g/ml\times 100 ml= 100 g$

Since NaCl solution is present in lessor mass so, it will act limiting reagent.

Heat absorbed by the solution

$Q=mc\Delta T=(m'+m'')c\Delta T=300 g\times 4.18 J/g^oC\times (0.47^oC)=589.38 J$

Heat absorbed by the calorimeter , $Q'=mc'\Delta T=c'\Delta T=105.5J/^oC\times (0.47^oC)=49.585 J$

Heat released during reaction, $\Delta H_{rxn}$ =49.585 J+589.38 J=638.965 J

As we know that NaCl is present as limiting reagent, the product will form according to the availability of NaCl.

Moles of NaCl in 100.0 ml of 0.100 solution = 0.01 moles

1 mol of NaCl gives 1 mol of AgCl, then 0.01 mol of NaCl will give 0.01 mol of AgCl

Heat of the reaction per 1 mol of AgCl = $\frac{638.965 J}{0.01 mol}=6 63896.5 J/mol= 63.896 kJ/mol\approx 64 kJ/mol$

The heat released during the reaction that exothermic reaction's $\Delta H_{rxn}$ is negative.

Hence the correct answer is option c.

5 0

3 years ago

Q#5. The bond between which two atoms is most polar?

Ede4ka [16]

Answer:

H-O

Explanation:

because oxygen and hydrogen have very high difference in electronegativity

8 0

3 years ago