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2 years ago

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If one parent has sickle cell anemia and the other parent is a carrier, what is the possibility that their child will have sickl

e cell anemia

1 answer:

earnstyle [38]2 years ago

5 0

It’s a 50 50 chance unless one parent has a dominate gene

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Geology belongs to which main category of science?

e-lub [12.9K]

Geology belongs to the Earth Science category I believe.

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2 years ago

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A popular classroom demonstration consists of filing notches into a new penny and soaking the penny in hydrochloric acid overnig

Ivanshal [37]

Answer:

$HCl conc=2.2M$

Explanation:

From the question we are told that:

Mass of zinc $Mass_{z_n}=2.5g$

Initial conc of HCl $HConc_1=6.0M$

Initial volume of HCl $Hvol_1=20.0mL$

Molar mass of zinc $M_{Z_n}=65.38g/mol$

Generally the equation for reaction is mathematically given by

$2HCL+Zn\implies ZnCl_2 +H_2$

Generally the equation for moles of zinc $m_{z_n}$ is mathematically given by

$m_{z_n}=\frac{Mass_{Z_n}}{M_{Z_n}}$

$m_{z_n}=\frac{2.5g}{M_{65.38}}$

$m_{z_n}=0.038molZn$

Generally the equation for moles of $m_{HCl}$ is mathematically given by

$m_{HCl}=HConc_1*Hvol_1$

$m_{HCl}=6.0M*20.0mL$

$m_{HCl}=6.0M*20.0*10^{-3}L$

$m_{HCl}=0.12\ mol\ HCl$

Generally the reacted moles of HCl $HCl_[reacted]$ is mathematically given by

Since

Zn:HCl =1:2

Therefore

$HCl_[reacted]=0.038*\frac{2}{1}$

$HCl_[reacted]=0.076mol \ HCl$

Generally the moles of HCl after Zn oxidization X is mathematically given by

$x=0.12-0.076$

$x=0.044 mol HCl$

Generally the conc of hydrochloride acid X is mathematically given by

$X=\frac{0.044}{0.020}$

$X=2.2 M Hcl$

Therefore Conc of HCl

$HCl conc=2.2M$

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2 years ago

The density of a metal is 11.0 g/cm3<br><br> Find the mass of 6.0 cm3

ra1l [238]

Answer:

The mass of the metal is 66 g

Explanation:

We use the formula:

Density =mass/ volume

11, 0 g/cm3= mass/ 6, 0 cm3

mass= 11, 0 g/cm3 x 6, 0 cm3= 66 g

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2 years ago

Hey could you help me for a sec? this is a grade + a test

Alona [7]

Answer:

hello

Explanation:

second option is correct please follow me

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2 years ago

Which of the following is a step that is NOT in the scientific method?

makvit [3.9K]

Answer:

C

Explanation:

If you look at the scientific method it has nothing to do with a law, you form a hypothesis, test it, record your answers, preform a few more experiments, and come to a conclusion

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2 years ago