All categories

3 years ago

Why is genetic engineering beneficial?

1 answer:

7 0

Genetic engineering is beneficial because it has been used to mass produce insulin, human growth hormones, follistim, vaccines, drugs, and much more.

You might be interested in

Help please please thanks

9966 [12]

Answer:

the agricultural revolution is the time where people went from mostly being Hunters and Gatherers to mostly farmers, a very long time ago

4 0

3 years ago

The rate constant of a first order reaction is 0.035 sec-1. How much of a 1.5 M sample of reactant would remain after 28 seconds

andrey2020 [161]

Answer:

0.56 M

Explanation:

Step 1: Given data

Rate constant (k): 0.035 s⁻¹

Initial concentration of the reactant ([A]₀): 1.5 M

Time elapsed (t): 28 s

Step 2: Calculate the amount of reactant ([A]) after 28 seconds

For a first-order kinetics, we will use the following expression.

ln [A] = ln [A]₀ - k × t

ln [A] = ln 1.5 - 0.035 s⁻¹ × 28 s

[A] = 0.56 M

4 0

3 years ago

Which sentence from Holes contains an implied personality trait?

solmaris [256]

Answer: thourgh stated personality traits

Explanation: stanley and his parents had tried to pretend that he was just going away to camp for a while, just like rich kids do.

6 0

3 years ago

Read 2 more answers

In a human nose, the total area of the region that detects our odors is about ¾ in^2. Compare that to the sensory organ of a hun

viva [34]

Let it be x

$\\ \sf\longmapsto \dfrac{3}{4}x=65$

$\\ \sf\longmapsto x=65\times \dfrac{4}{3}$

$\\ \sf\longmapsto x=\dfrac{260}{3}$

$\\ \sf\longmapsto x\approx82$

6 0

3 years ago

A piece of sodium metal reacts completely with water as follows: 2Na(s) + 2H2O(l) ⟶ 2NaOH(aq) + H2(g) The hydrogen gas generated

Nastasia [14]

Answer:

$\large \boxed{\text{0.449 g}}$

Explanation:

1. Gather all the information in one place

M_r: 22.99

2Na + 2H₂O ⟶ 2NaOH + H₂

$\, p_{\text{tot}} = \quad \text{1.00 atm}\\p_{\text{H2O}} = \text{0.0313 atm}$

T = 25.0 °C

V = 246 mL

2. Moles of H₂

To find the moles of hydrogen, we can use the Ideal Gas Law:

pV = nRT

(a) Calculate the partial pressure of the hydrogen

$p_{\text{tot}} = p_{\text{H2}} + p_{\text{H2O}}\\\text{1.00 atm} =p_{\text{H2}} +\text{0.0313 atm}\\p_{\text{H2}} = \text{0.9687 atm}$

(b) Convert the volume to litres

V = 246 mL = 0.246 L

(c) Convert the temperature to kelvins

T = (25.0 + 273.15) K = 298.15 K

(d) Calculate the moles of hydrogen

$\begin{array}{rcl}\text{0.9687 atm}\times \text{0.246 L} & = & n \times 0.082 06 \text{ L}\cdot\text{atm}\cdot\text{K}^{-1}\text{mol}^{-1} \times \text{298.15 K}\\0.2383 & = & 24.47n \text{ mol}^{-1}\\\\n & = & \dfrac{0.2383}{24.47\text{ mol}^{-1}}\\\\& = & 0.009740 \text{ mol}\\\end{array}$

3. Moles of Na

The molar ratio is 2 mol Na: 1 mol H₂

$\text{Moles of Na} =\text{0.009 740 mol H}_{2} \times \dfrac{\text{2 mol Na}}{\text{1 mol H}_{2}} = \text{0.019 48 mol Na}$

4. Mass of Na

$\text{Mass of Na} = \text{0.019 48 mol Na} \times \dfrac{\text{22.99 g Na}}{\text{1 mol Na}} = \text{0.449 g Na}\\\\\text{The mass of Na used was $\large \boxed{\textbf{0.449 g}}$}$

6 0

3 years ago