All categories

3 years ago

Please help asap!!

Chemistry

2 answers:

Strike441 [17]3 years ago

6 0

Answer:

the answer is b convert

Explanation:

i dont have the words to explan right now i will get back to u tho

maksim [4K]3 years ago

4 0

Answer:

B! Convergent

Or C

You might be interested in

when a species must survive changes in the environment, would they want to use sexual or asexual reproduction. Explain

eduard

Sexual. First of all because any thing that is something like an animal can not participate in asexual reproduction. A species is a small population of a certain animal that can survive and produce fertile offspring

5 0

3 years ago

How does a nuclear power plant produce electricity?

jek_recluse [69]

The heat released from fission reactions is used to change water into steam. The steam then turns the blades of a turbine to generate energy. The answer will hence be B. Quickly moving neutron coming out of the reaction are slowed down by water. The water heats up and turns into steam. The steam turns the turbine and produces electricity.

3 0

3 years ago

A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure o

ruslelena [56]

Answer:

102.807 kPa

Explanation:

There are some assumptions to be made in the answer. The air inside the balloon acts as an ideal gas at a given temperature conditions.

Using the combined ideal gas equation.

$PV = nRT\\$

P= absolute pressure of air inside the balloon.

V= volume of air inside the balloon (6.23 L= 6.23 * 10⁻³ m³)

n= moles of gas(air). (0.250 mol)

R= Universal gas constant ( 8.314 J / mol·K)

T= Temperature in Kelvin

T= 35 + 273.15 = 308.15 K

So, $P = \frac{nRT}{V}$

$P = \frac{0.250 * 8.314 * 308.15}{6.23 * 10^{-3} }$

P= 102.807 * 10³ Pa

P= 102.807 kPa

3 0

3 years ago

Read 2 more answers

Consider the reaction below. mc009-1.jpg If the reaction is at dynamic equilibrium at 500 K, which statement applies to the give

Bas_tet [7]

The answer is ( The concentrations of the products and reactants do not change.)

6 0

4 years ago

Read 2 more answers

A cold pack manufacturer has decided to change the chemical in their cold pack from ammonium nitrate to ammonium chloride, a saf

My name is Ann [436]

Answer: Tfinal = 7.1°C

Explanation:

heat released or absorbed = mass × specific heat capacity × change in temperature

q = m × cg × ΔT (eqn 1)

Note: ΔT = (Tfinal - Tinitial)

(q = ? ΔHsoln=25.7kJ/mole = 25700J/mole; mass of solution, m = 100 + 35g = 135g; cg = specific heat capacity of water = 4.18 J°C-1g-1; ΔT = ? masss of solute, NH4NO3 = 35g, molar mass of solute, NH4NO3 = 80g)

molar enthalpy of solution, ΔHsoln = heat absorbed or released ÷ moles of solute, n

ΔHsoln = q ÷ n

q = ΔHsoln × n

moles solute, n = mass solute (g) ÷ molar mass solute (g mol-1)

moles of solute, n = 35g/80g/mol = 0.4375 moles

q = 25700J/mol × 0.4375 mol = 11243.75J

From equation 1 above, ΔT = q / (m × cg) = 11243.75J / (135 × 4.18 J°C-1g-1) = 19.9°C

Since the reaction is endothermic, Tinitial > Tfinal, therefore, Tfinal = Tinitial - ΔT = 27 - 19.9 = 7.1°C

4 0

4 years ago