Why is the time series useful as a management tool?

Chemistry

1 answer:

katrin [286]3 years ago

8 0

Answer:

Explanation:

It estimates the probability of extinction.

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What is the specific heat of an unknown metal of 2.93 kcal of energy are required to raise the temperature of 183.4g sample of t

crimeas [40]

Answer:

The specific heat of the unknown metal is 1.26*10⁻⁴ $\frac{kcal}{g* C}$

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat occurs when heat added or removed from a substance causes a temperature change in it and is calculated by:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT (Tfinal - Tinitial) is the variation in temperature

In this case:

Q= 2.93 kcal
c= ?
m= 183.4 g
ΔT= 126.3 °C

Replacing:

2.93 kcal= c* 183.4 g*126.3 °C

Solving:

$c=\frac{2.93 kcal}{183.4 g* 126.3 C}$

c= 1.26*10⁻⁴ $\frac{kcal}{g* C}$

The specific heat of the unknown metal is 1.26*10⁻⁴ $\frac{kcal}{g* C}$

6 0

4 years ago

What are the major organic products are formed when the following compounds react with methylmagnesium bromide (CH3MgBr), follow

Sliva [168]

Answer:

Major organic products are- (a) propan-1-ol and (b) 2-methylpropan-2-ol

Explanation:

methyl magnesium bromide gives nucleophilic addition reaction with carbonyl group. Because methyl magnesium bromide is a strong nucleophile and carbonyl group is a strong electrophilic center.

Propanal contains an aldehyde group and propanone contains a ketone group. hence they both give nucleophilic addition with methyl magnesium bromide.

Dilute acid is added to protonate the alkoxide produced during nucleophilic addition.

Reactions are shown below.