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3 years ago

Why is the endocrine system important?

1 answer:

8 0

The endocrine system is important to the function of the human body because, endocrine glands release hormones into the bloodstream. Which lets the hormones travel to the cells in other parts of the body. This also helps control mood, growth and development, the way our organs work, metabolism and reproduction.

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A rocket is designed to drop its first stage mid-flight. Due to a malfunction, this does not occur. What is a possible result of

artcher [175]

Answer:

The rocket is now too heavy to reach its destination.

3 0

4 years ago

Read 2 more answers

Calculating the expected pH of the buffer solution: Given that the pKa for Acetic Acid is 4.77, calculate the expected pH of the

ser-zykov [4K]

Answer:

$pH=4.77$

Explanation:

From the question we are told that:

pKa for Acetic Acid $pK_a= 4.77$

Therefore

For Equal Concentration of acetic acid and acetatic ion

$CH_3COOH=CH_3COO^-$

Generally the Henderson's equation for pH value is mathematically given by

$pH=pK_a+log\frac{base}{acid}$

$pH=4.77+log\frac{CH_3COO^-}{CH_3COOH}$

$pH=4.77+log1$

$pH=4.77$

5 0

3 years ago

Table salt contains 39.33 g of sodium per 100 g of salt. The U.S. Food and Drug Administration (FDA) recommends that adults cons

IrinaVladis [17]

First set up the equation 39.33g/100g = x/1.28g and that'll give you how much sodium is in each 100g of the mix.

39.33g *1.28g= 100g * x
x = 0.503424g
x = Amount of sodium per 100g of the mix

Now 2.4g / 0.503424 = 4.7674
Multiply by 100 and you get 476.7353g

4 0

3 years ago

Read 2 more answers

You read through a site about inventions that contains the following paragraph:

Ludmilka [50]

The correct option is C. The paragraph is biased, not taking into consideration the other great inventions that have been made. The information given are vague, over generalised, without providing any evidence to support its claims. They are blanket statementso and are not useful at all.

6 0

3 years ago

What is the rate of a reaction if the values are

3241004551 [841]

Answer:

Explanation:

Hi there,

To get started, let's first observe our rate law:

$R=k[A]^2[B]^2$ we typically use square brackets [x] for chemistry kinetics, because they specifically tell us we are dealing with concentrations.

This rate law is in fourth-order, because the concentrations powers add up to 4. We are not told the unit of time for this prompt (unless you know it), so I just assumed the time unit to be "time."

To calculate the reaction rate, we simply plug in the concentration of A and B into the rate law. k is the rate constant and stays the same for an individual reaction.

$R=(0.1 \ M^{-3}*time^{-1})[1 \ M]^2[2 \ M]^2=0.4 \ M/time$

Thus, the rate of reaction with those concentrations is 0.4 M/time.

Notice, the rate constant does in fact have units of it own. The unit for k can be calculated by knowing that:

Rate (R) must end up with units of concentration (M) per time.
The concentrations raised to a power can be used to help solve for the units of k.

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5 0

3 years ago