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3 years ago

What is a climate hazard

Chemistry

2 answers:

mixas84 [53]3 years ago

6 0

A climate hazard is a ruins people or property like tornadoes, storms, or floods. Can I get Brainliest plz!

svlad2 [7]3 years ago

3 0

Answer:

Explanation:

Climatic hazards are disasters of catastrophe regarding what they may do to human settlements or to the climate. Conceivably unsafe barometrical marvels incorporate hurricanes, rainstorms, twisters, dry season, downpour, hail, day off, haze, wind, temperature boundaries, air contamination, and climatic change.

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How many grams of KNO3 are required to prepare 0.250 L of 0.70 M solution?

drek231 [11]

Answer:

about 3

Explanation:

just did this for the points just being honiest

4 0

2 years ago

How much energy must be removed from a 94.4 g sample of benzene (molar mass= 78.11 g/mol) at 322.0 K to solidify the sample and

Kay [80]

Answer : The energy removed must be, 29.4 kJ

Explanation :

The process involved in this problem are :

$(1):C_6H_6(l)(322K)\rightarrow C_6H_6(l)(279K)\\\\(2):C_6H_6(l)(279K)\rightarrow C_6H_6(s)(279K)\\\\(3):C_6H_6(s)(279K)\rightarrow C_6H_6(s)(205K)$

The expression used will be:

$Q=[m\times c_{p,l}\times (T_{final}-T_{initial})]+[m\times \Delta H_{fusion}]+[m\times c_{p,s}\times (T_{final}-T_{initial})]$

where,

$Q$ = heat released for the reaction = ?

m = mass of benzene = 94.4 g

$c_{p,s}$ = specific heat of solid benzene = $1.51J/g^oC=1.51J/g.K$

$c_{p,l}$ = specific heat of liquid benzene = $1.73J/g^oC=1.73J/g.K$

$\Delta H_{fusion}$ = enthalpy change for fusion = $-9.8kJ/mol=-\frac{9.8\times 1000J/mol}{78g/mol}=-125.6J/g$

Now put all the given values in the above expression, we get:

$Q=[94.4g\times 1.73J/g.K\times (279-322)K]+[94.4g\times -125.6J/g]+[94.4g\times 1.51J/g.K\times (205-279)K]$

$Q=-29427.312J=-29.4kJ$

Negative sign indicates that the heat is removed from the system.

Therefore, the energy removed must be, 29.4 kJ

3 0

3 years ago

What are the properties of organic compounds determined by?

jarptica [38.1K]

The properties of organic compounds is determined by <u>A) Their boiling point</u><u />.

6 0

3 years ago

Read 2 more answers

Prediction for Scandium (II) and Cl

SCORPION-xisa [38]

Answer:

(a) Eka-aluminum and gallium are two names of the same element as Eka-Aluminium has almost exactly the same properties as the actual properties of the gallium element. The properties: atomic mass, density, melting point, formula of chloride and formula of oxide are almost the same.

Explanation:

Scandium - Eka boron.

(ii) Gallium - Eka aluminium.

(iii) Germanium - Eka silicon.

3 0

3 years ago

The elementary reaction 2 H 2 O ( g ) − ⇀ ↽ − 2 H 2 ( g ) + O 2 ( g ) proceeds at a certain temperature until the partial pressu

daser333 [38]

Answer:

6.75 × 10⁻⁸is the value of the equilibrium constant at this temperature.

Explanation:

2H₂O(g) ⇄ 2H₂(g) + O₂(g)

Partial pressure of H₂O = 0.0500 atm

Partial pressure of H₂ = 0.00150 atm

Partial pressure of O₂ = 0.00150 atm

The expression of Kp for the given chemical equation is:

$K_p = \frac{[H_2]^2[O_2]}{H_2O}$

$= \frac{(0.00150^2)(0.00150)}{(0.0500)} \\= 6.75 * 10^-^8$

6.75 × 10⁻⁸is the value of the equilibrium constant at this temperature

7 0

4 years ago