HELPPP MEE I NEED HELPP PLEASE
Which person participates mostly in the quaternary level of an economy?
A. A coal miner
3. A car mechanie
C. A college professor
D. A car factory worker
SUBMIT

Answer:

atoms should be the correct answer

Answer:

Matter is made up of tiny particles called atoms.

Explanation:

Atoms are made up of protons, neutrons and electrons. Atoms come together to form molecules which are building blocks for all types of matter.

America's age = 243.85 years

When converting units, list and multiply all the units until you find the unit you want

Time unit conversion

1 year = 365 days

1 day = 24 hours

1 hour = 3600 s

7.69 x 10⁹ seconds to years :

[tex]\tt =7.69\times 10^9~s\times \dfrac{1`hour}{3600~s}\times \dfrac{1~day}{24~hours}\times \dfrac{1~years}{365~days}\\\\=\dfrac{7.69\times 10^9}{3600\times 24\times 365}\\\\=\boxed{\bold{243.85~years}}[/tex]

Answer:

:)

Explanation:

Answer: Summary of Common Properties

Explanation:

May I please have brainiest?

Answer:

The two properties of most non metals are high ionization energy and poor electrical conductivity. The correct option among all the options that are given in the question is option "1". In general it is known that nonmetals are very poor conductors of heat and electricity. The nonmetals that are solid are normally very brittle and has very little or no metallic luster at all. Nonmetals are highly reactive and show variety of chemical properties. It can also be pointed out that the nonmetals gain electrons very easily.

brainliest pleaseee :)

since 73% of the isotope is given, take 100%-73% to get the remaining % of the isotopes which is going to be 27%.

hence,

atomic weight= (73×59) + (27×62)

=4307+1302

=5609 amu

Answer:

acid turns blue litmus red and base turns red litmus blue

Answer:

turns red or pink if it is acid and turns green if it is a base

Explanation:

litmus paper is blue

Answer:

box A

Explanation:

10 is bigger than 3 since 10 is bigger it has more force in it

Answer:

The boiling point increases with increased pressure up to the critical point, where the gas and liquid properties become identical.

Answer:

Reactivity

Explanation:

Luster. Ductile, and Malleabillity are all physical.

Answer:

The answer is the second picture.

Explanation:

When you perceive a sound lower than its actual pitch, then you must have been further from the actual position.

The pitch of a sound is a perceptual property of sounds that allows sound of similar frequencies to be distinguished.

Pitch is the quality of sound, that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical notes.

Thus, when you perceive a sound lower than its actual pitch, then you must have been further from the actual position.

Learn more about pitch of sound here: https://brainly.com/question/61859

#SPJ2

Answer:

What's the problem???

Answer:

B. They have the same number of protons and electrons

Explanation:

Protons have a charge of +1, electrons have a charge of -1, and neutrons have no charge, making them neutral. When there are the same number of protons as there are electrons, the charges balance out, leaving you with a neutral atom.

Answer:

Option B. 126.68 amu

Explanation:

The following data were obtained from the question:

Isotope A (¹²⁷X):

Mass of A = 127

Abundance (A%) = 80%

Isotope B (¹²⁶X):

Mass of B = 126

Abundance (B%) = 17%

Isotope C (¹²⁸X):

Mass of C = 128

Abundance (C%) = 3%

Average atomic mass of element X =.?

Th4 average atomic mass of X can be obtained as follow:

Average atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]

= [(127 × 80)/100] + [(126 × 17)/100] + [(128 × 3)/100]

= 101.6 + 21.42 + 3.84

= 126.68 amu

Therefore, the average atomic mass of X is 126.68 amu

Answer:

B. NEON.

HOPE IT HELPED

Answer:

Potential Energy is stored energy or energy of position (gravitational). The object isn't moving. For example, a ball being held is potential energy because the object isn't moving but it has the potential of turning into kinetic energy.

Kinetic Energy is the energy of motion. For example, running. You are moving, and there is clear action and activity

Energy stored in an object due to its position is Potiential energy . Energy that is moving object has due to its motion is Kinetic energy .

Answer:

Principle stating that specific groups of organisms have followed, or succeeded one another in a definite sequence through Earth history

Explanation:

Principle stating that specific groups of organisms have followed, or succeeded one another in a definite sequence through Earth history describe Faunal succession because it is a principle that indicate that fossil plants and animals succeed each other in a sequential manner even if they occur in different places. Successive strata and faunas are linked together to form composite section in the Earth's history.

Answer:

the last one

Explanation:

Answer:

610.1

Explanation:

When we add or subtract the values, the number of significant figures after decimal in result must be equal to the given measurement having less number of decimal places.

In given values 377.1 has only decimal place thus in result after decimal there should be one digit only.

987.22 - 377.1 = 610.1

When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value.

Now we will calculate the difference between 7.69 and 4.0.

7.69 - 4.0 = 3.69

In given values 4.0 have less number of significant figures thus result must have only two significant figures . So we would round the result.

3.7

Answer:

the Amurian plate, the  the Okhotsk plate, and the Filipino plate all converge in the region beneath Mount Fuji.

Explanation:

Answer:

4.00 moles of water

Explanation:

The equation of the reaction is:

2 C2H2Cl (9) + 5O2(g) -------> 4CO2 (g) + 2 H20( g) + 2 HCl(g)

To find the limiting reactant,  we find the species that yields the lowest number of moles of water.

From the reaction equation;

2 moles of C2H2Cl  yields 2 moles of water

10 moles of C2H2Cl  yields 10 * 2/2 = 10 moles of water

Similarly;

5 moles of oxygen yields 2 moles of water

10 moles of oxygen will yield 10 *2/5 =4 moles of water

Hence oxygen is the limiting reactant.

10 moles of oxygen yields 4 moles of water.

Answer:

Gives us oxygen to live, and if produces products such as, rubber, timber, herbs, and medicines.

Answer:

The purpose of using a chemical equation is to keep track of elements and the number of atoms of each of the elements on each side of the equation. ... They use symbols and formulas to show the chemical reaction so that chemical names do not need to be written out.

Answer:

:0

Explanation:

Sample Response: Chemical equations show how chemicals interact when a reaction occurs. They use symbols and formulas to show the chemical reaction so that chemical names do not need to be written out. They also help keep track of all elements and the number of atoms of each element on each side of the equation.

Answer:

solid

Explanation:

Answer:

Gas

Explanation:

Answer:

Explanation:

Synthesis- D

Combustion- C

Decomposition- A

Single Displacement- C

Double Displacement- B

Answer:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Scientific methodology includes the following: Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)

Explanation:

Answer:

Modern science is typically divided into three major branches that consist of the natural sciences (e.g., biology, chemistry, and physics), which study nature in the broadest sense; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies; and the formal sciences

Answer:

57 minutes and 35 seconds, or 56.95

Explanation:

Answer:

56.95 minutes

Explanation:

hope it helps

Answer:

Mass is measured in kg

Acceleration is measured in m/s^2

Weight is measured in Newtons

Momentum is measured in kg/m^2