CHEMISTRY HIGH SCHOOL

PLEASE HELP WILL GIVE BRAINLIEST​
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Answers

Answer 1
Answer: It’s the atomic number.

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What can be said about the polarity of the C=O bond? A) C and O have the same electronegativity; the bond is nonpolar B) the C=O bond is polar; the O atom bears a partial negative charge C) the C=O bond is nonpolar; the C atom bears a partial positive charge D) the C=O bond is polar; the C atom bears a partial negative charge
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Which of the radioactive emissions has the highest energy

Answers

The correct answer is the gamma ray. It has the most penetration power and will pass through a number of things. Also, a gamma ray has shorter wavelength therefore higher energy from the equation, Energy = hc/wavelength.

One way to limit deforestation is bya. practicing crop rotation.
b. increased soil fertilization.
c. increased use of wood products.
d. using wood from trees grown on tree farms.

Answers

One way to limit deforestation by practicing crop rotation. The correct option among all the options given in the question is option "a". Crop rotation will keep the farmers from further cutting of forests to gain fresh lands. This will also decrease the use of wood products. The soil will also gain strength due to rotation of crop.

Answer:

d. using wood from trees grown on tree farms.

Explanation:

How many milliters of a 0.171 solution contains 1.00 g of NaCl

Answers

:  Molar mass of NaCl: 35.4+22.9 = 58.3 g/mol

X milliliters (=X/1000 liters) of a 0.171M solution contain 0.171*X/1000 moles of NaCl.
0.171*X/1000 moles of NaCl = 58.3*0.171*X/1000 g = 1 g (as given)
58.3*0.171*X/1000 = 1
X = 100.3

Which layer of the Basement Membrane of epithelial tissues is produced and secreted by cells of the underlying connective tissue? (a) Reticular Lamina (b) Lamellar Lamina (c) Papillary Lamina (d) Basal Lamina

Answers

(a) Reticular Lamina

The layer of the basement membrane of epithelial tissues that is produced and secreted by cells of the underlying connective tissue is (a) Reticular Lamina.

The basement membrane is composed of two layers: the basal lamina, which is produced by the epithelial cells themselves, and the reticular lamina, which is produced and secreted by cells of the underlying connective tissue. These two layers together provide structural support and help anchor the epithelial tissue to the underlying connective tissue.

Can someone pls help indicate the number of significant figures with these numbers: 34g, 564 l, 19.3 mm, 23.45 mg, 101 km, and 3400 g

Answers

The concept of significant figures are mainly used by scientist and engineer to know the significance of digits in a measurement. Therefore, significant figures gives an idea about the digits that are necessary to indicate the experimental value.

What is significant figures?

Significant figures are the figures that indicate the degree of accuracy of a value. It tells about the precision of a value.

Rules for counting significant figures are:

Number between 1 to 9 is always significant

Zeroes after a number has got no significance

Zeroes before a number has got no significance

Zeroes between number has got significance

34g              2significant figures

564l              3significant figures

19.3mm        3significant figures

23.45 mg     3significant figures

101 km           3significant figures

3400 g          2 significant figures

Therefore, significant figures gives an idea about the digits that are necessary to indicate the experimental value.

To learn more about Significant figures, here:

brainly.com/question/12656148?

#SPJ2
The significant figures is two because that is the least amount of spaces before the decimal out of those numbers

Complete the equation Fe + HOH = ?

Answers

Fe+2HOH=Fe(OH)_2+H_2. Iron is divalent to hydrogen and water.

Answer:

Fe+2HOH=Fe(OH)_2+H_2. Iron is divalent to hydrogen and water.

Explanation:
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