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brilliants [131]

3 years ago

11

Determination of your estimate determines the BLANK and BLANK of a piece of equipment.

1 answer:

Zina [86]3 years ago

4 0

Answer:

scalpel,mask

Explanation:

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Does moisture affect the length of time it takes for mold to grow on bread?

Pavlova-9 [17]

Answer:

it depends on the level of moisture of the bread wet bread molds more quickly than dry bread because mold thrives in damp environments if you didn't experiment and tested one slice of dry bread and one damp slice of the same bread the dampened slice would grow mold much more quickly than the dry one

I hope this helps have a good dày or night :)

3 0

3 years ago

The rate of decay of a chemical involved in a reaction that is second order (bimolecular) in one reactant A is given by: = k [AJ

anyanavicka [17]

Explanation:

$2A\rightarrow products$

According to mass action,

$\textrm{rate}=-\dfrac{\Delta[\textrm A]}{2\Delta t}=k[\textrm A]^2$

Where, k is the rate constant

So,

$\dfrac{d[A]}{dt}=-k[A]^2$

Integrating and applying limits,

$\int_{[A_t]}^{[A_0]}\frac{d[A]}{[A]^2}=-\int_{0}^{t}kdt$

we get:

$\dfrac{1}{[A]} = \dfrac{1}{[A]_0}+kt$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Half life is the time when the concentration reduced to half.

So, $[A_t]=\frac{1}{2}\times [A_0]$

Applying in the equation as:

$t_{1/2}=\dfrac{1}{k[A_o]}$

7 0

4 years ago

Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C.

BARSIC [14]

Your answers are correct. I love the Universal formula.

8 0

3 years ago

Read 2 more answers

Write a balanced equation for the combustion of gaseous methane (CH4), a majority component of natural gas, in which it combines

max2010maxim [7]

Answer:

CH₄(g) + 2O₂(g) ---> 1CO₂(g) + 2H₂O(g)

Explanation:

any combustion of a hydrocarbon equation is in form:

CₓHₐ(g) + BO₂(g) ---> YCO₂(g) + ZH₂O(g), where x,a,b,y,z are all whole number positive integers

there will be 1 CO₂ to 2 H₂O, since there is 1 C to 4 H in CH₄; it is not 1:4 since 2 H is needed in H₂O

CH₄(g) + _O₂(g) ---> 1CO₂ + 2H₂O

there is 4 total O on products side, which can make 2O₂

CH₄(g) + 2O₂(g) ---> 1CO₂(g) + 2H₂O(g)

6 0

3 years ago

Read 2 more answers

If air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body _______

dybincka [34]

Answer:

Mechanical energy

Explanation:

Given that,

Potential energy of an object is given by :

P = mgh

The kinetic energy of an object is given by :

$K=\dfrac{1}{2}mv^2$

Where

m is mass

h is height

v is velocity of the object

The sum of potential and kinetic energy is equal to total energy or the mechanical energy.

Hence, if air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body is equal to mechanical energy.

4 0

3 years ago