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3 years ago

13

Of the chemicals that fall under the toxic substances control act, __% have been thoroughly tested for toxicity and

__ have been tested for endocrine, nervous, or immune system damage.

1 answer:

givi [52]3 years ago

7 0

10 percent and for the second blank the answer should be none

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A slice of pizza has 500 kcal. If the pizza is burned and its heat is used to warm a 50-L container of cold water, what would be

Vinvika [58]

Given:
The heat content of the pizza is Q = 500 kcal
The volume of the cold water is V = 50 L
The mass of a liter of cold water is 1 kg.

Calculate the mass, M, of cold water.
M = (50 L)*(1 kg/L) = 50 kg

The specific heat of water is
c = 4.184 kJ/(kg-K)

Also,
1 kcal = 4184 J, therefore
Q = (500 kcal)*(4184 J/kcal) = 2.092 x 10⁶ J

Let ΔT = increase in temperature of the cold water, °C (same as K).
Then
Q = M*c*ΔT
or
ΔT = Q/(M*c)
$\Delta T = \frac{(2.092 \times 10^{6} J)}{(50 \, kg)(4.184 \times 10^{3} \, \frac{J}{kg-K)}) } =10 \,K=10 \,^{o}C$

Answer: The temperature increases by 10 °C (or 10 K)

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2 years ago

Saco membranoso lleno de fluido

BartSMP [9]

Answer:

La vacuola es el término correcto

(The vacuole is the correct term)

Explanation:

Las vacuolas son burbujas de almacenamiento que se encuentran en las células. Se encuentran tanto en células animales como vegetales, pero son mucho más grandes en células vegetales. Las vacuolas pueden almacenar alimentos o cualquier variedad de nutrientes que una célula pueda necesitar para sobrevivir. Incluso pueden almacenar productos de desecho para proteger el resto de la celda de la contaminación.

(Vacuoles are storage bubbles found in cells. They are found in both animal and plant cells but are much larger in plant cells. Vacuoles might store food or any variety of nutrients a cell might need to survive. They can even store waste products so the rest of the cell is protected from contamination.)

por favor ofrece una brainliest

(please offer a brainliest!)

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2 years ago

The type of reproduction by which plants produce offspring from vegetative part is called

Allushta [10]

<span>Others are external fertilization:

</span>a. all of the sperm will fertilize eggs.
b. sperm and egg will be released simultaneously.
c. the number of sperm and eggs produced will be equal.
<span>e. sperm will be protected until they can unite with the eggs.</span>

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2 years ago

Is the crayfish most vulnerable to its enemies from the dorsal side or ventral side? why?

Alexus [3.1K]

<span>Most vulnerable side is the ventral because in the dorsal side there is the backbone. Most of the harder bones are on the dorsal side. So then the ventral side also known as the belly side is more vulnerable and softer.Sorry I took Forever LOL</span>

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3 years ago

What is one health issue that biology can help you to better understand

Annette [7]

Genetic diseases is one of the topics that will be covered in biology

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