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Tanzania [10]
3 years ago
15

If an atom has 34 protons, 23 neutrons, and 36 electrons, what would be it's atomic number?

Biology
1 answer:
postnew [5]3 years ago
6 0

Answer:

34

Explanation:

it's atomic number is the same as it's number if protons

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The bald eagle almost went extinct when humans began using a pesticide called DDT. What can you conclude from the fact that bald
pashok25 [27]

Answer:

. Humans re-shape their environment, putting pressure on other species.

Explanation:

3 0
3 years ago
Students in Ms. Nye's science class were using the microscopes to make slides of various organisms: algae, moss, onion cells, hu
ladessa [460]

the answer is chloroplasts

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3 years ago
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Volume is defined as the amount of mass that an object has? True or false
maria [59]

Answer:

False

Explanation:

Mass and volume are two different quantities. In fact:

- Mass is a scalar quantity representing the "amount of matter" contained in a certain substance. It is measured in kilograms (kg), which is one of the 7 fundamental SI units.

- Volume is a scalar quantity representing the amount of "three-dimensional space" occupied by an object or a substance. It is measured in cubic meters (m^3).

Therefore, mass and volume are two different quantities. They are related through another quantity called density, given by:

d=\frac{m}{V}

where

m is the mass

V is the volume

So the density of a substance represents the amount of mass contained in a certain volume of the substance.

3 0
3 years ago
You've been experiencing acid indigestion lately, and you'd like a quick fix for the problem. You do a little research on the In
Licemer1 [7]

Answer:

<em>C: After 1 hour, the pH of the solution in the PEPCID AC beaker was 9.2 and the pH of the solution in the Alka-Seltzer beaker was 8.3</em>

Explanation:

The degree of acidity or alkalinity/basicity of a substance is its pH. The value of pH ranges from 1 to 14 with the former being extreme acidity and the latter being extreme alkalinity while pH 7 is considered neutral.

Hence, any pH below 7 is considered acidic and above 7 is considered alkaline.

Reactions involving equal volumes of an acid and a base can end in acidic, alkaline or neutral pH depending on the strength of the acid/base involved;

  • Equal volumes of strong acid with strong base will result in neutral pH
  • Equal volumes of weak acid with strong base will result in alkaline pH
  • Equal volume of strong acid with weak base will result in acidic pH

If substance A and B reacts with equal volume of the same acid under the same condition and the end result of A is a solution with pH of 9.2 and that of B is a pH of 8.3, it simply means substance A is a stronger base than substance B.

<em>Hence, the only outcome that supports the hypothesis that a tablet of PEPCID AC can neutralize more stomach acid than a tablet of Alka-Seltzer is that the pH of the solution in the PEPCID AC beaker was 9.2 and the pH of the solution in the Alka-Seltzer beaker was 8.3 after being subjected to the same condition.</em>

If an indigestion is due to excess stomach acid, the only way to reduce the acidity is to consume a substance that will decrease the degree of acidity in the stomach. This means that the patient will need to consume something that is alkaline in order to increase the pH.

8 0
3 years ago
1. They system that Linnaeus developed classifies organisms by ____.
marshall27 [118]

1.

C. Genus and species

Binominal nomenclature: a formal system of naming species of living things, such as humans which are <em>homo sapiens.</em>

2.

A. carbohydrates

any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose.

3.

C. work with other cells

one unicellular organism would quickly die if was not within a colony of very similar unicellular organisms.

4.

C. Bacteria

bacteria are able to cause contagious diseases seeing as a virus, (which can be a contagious disease) is a form of bacteria.

4 0
3 years ago
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