Read the passage "Ants" in the box below.
ANTS
Carla and Maurice are observing ants in their backyard. Carla is drawing
pictures of the ants around the anthill and the objects they carry. The pictures will
decorate her bedroom wall. Maurice is recording the number of ants that enter the
anthill and what types of things they bring with them, so he can figure out what ants
eat
Which type of activity did the two perform?
O Both participated in scientific activities in which they objectively observed and recorded
information about ants to answer a question about nature.
Carla participated in a scientific activity, while Maurice participated in an artistic activity.
Carla participated in an artistic activity, while Maurice participated in a scientific activity.
O Both participated in artistic activities in which they subjectively observed and recorded
information about ants to illustrate a part of nature.

Answer:

there are 0.074 moles in 2.3 grams of phosphorus

Answer:

C-Electrical energy changed into mechanical energy

Explanation:

Energy, according to the law of conservation of energy, is said to neither be created or lost but only interchangeable from one form to another. Energy exists in different forms. The process by which one form of energy changes to another is called TRANSFORMATION of energy.

However, certain household appliances or devices bring about this transformation of energy. For example, in a case where Tony turns a fan on when his room becomes uncomfortably hot. The fan uses an electric source to get powered on, which then facilitates the blades of the fan to move fast in order to bring about a cool atmosphere.

The fan converts ELECTRICAL energy (electric source) into MECHANICAL energy (moving energy).

Answer: 40

Explanation: 0.2 x 200

Answer:

T = 561.3K

Explanation:

The translational kinetic energy of a gas such as nitrogen is obtained using the formula:

K = 3/2 * n * R * T

Where n  are moles of gases (1mole of N₂), R is gas constant (8.314J/molK)and T is absolute temperature (in K)

If the translational energy of the gas is 7.0x10³J:

7.0x10³J = 3/2 * 1 mole * 8.314J/molK * T

Answer:

The correct option is;

Has potential energy

Explanation:

The total mechanical energy of a mechanical toy is given as follows;

Total Mechanical Energy = Kinetic Energy + Potential Energy

During the winding up of the coil, the total energy becomes the kinetic energy

The total energy at the point of winding up of the coil = The kinetic energy supplied to the toy by winding the coil

From the first law of thermodynamics, energy cannot be created nor destroyed but can be changed from one form to another

Due to the coil being prevented from unwinding, the kinetic energy  becomes transformed (stored as) into Potential energy of the toy

When the toy is operated it then unwinds the coil bringing about motion and converting back the potential energy to kinetic energy by itself as if it was alive.

Answer:

matter is anything with mass and volume

Answer:

a. Mathematics

Explanation:

There are various scientific studies and their complexity is different from each other. The one study might be difficult for one student but the other student who has interest in the particular subject might find it easy and interesting. Mathematics is the study which involves lot of variables which increase its level of complexity. The scientist may stuck in solution for years due the complexity of the multiple variables.

Answer:

compound

Explanation:

"Marble is typically more than 95% calcium carbonate, perhaps even 99% calcium carbonate, and calcium carbonate is a compound. Marble has a good claim to be recognized as a compound."

Answer: Element

Explanation: No, marble is not a compound, because for a rock to be called marble other characteristics, beyond the chemical composition, have to have specific values. But marble is made up of only one compound, calcium carbonate. Colored marbles do contain small amounts of other chemicals.

Answer:

75.4 gram /3.45 gram/cubic centimeter  = 21.855072463768 cubic centimeter

Explanation:

V =   m /ρ

where V = Volume, p = Density  and m = Mass

Answer:

124.8 inches

Explanation:

Answer:

1 and 4 took the test

Explanation:

Answer:

Empirical and molecular formula are both C₁₀H₂₀O

Explanation:

The formula of menthol is CₐHₓOₙ. In the problem we need to find a, x and n.

The combustion of menthol occurs as follows:

CₐHₓOₙ + O₂ → aCO₂ + 1/2 H₂O

That means moles of carbon dioxide are equal to moles of carbon in menthol and moles of hydrogen are twice moles of water.

Moles CO₂ and mass C:

0.2829g CO₂ * (1mol / 44g) = 6.4295x10⁻³ moles CO₂ = Moles C * 12.01 = 0.0772g C

0.1159g H₂O * (1mol / 18g) = 6.4389x10⁻³ moles H₂O * 2 = 0.01288 moles H * 1.0g/mol = 0.01288g H

That means mass of O in the sample is:

Mass O = 0.1005g - 0.0772g C - 0.01288g H = 0.01042g O * (1mol / 16g) = 6.51x10⁻⁴ moles O

Empirical formula is the simplest whole number ratio of moles of each element present in a compound. Dividing each number of moles in moles O (The smaller number of moles):

H = 0.01288 moles H / 6.51x10⁻⁴ moles O = 19.8 ≈ 20

C =  6.4295x10⁻³ moles C / 6.51x10⁻⁴ moles O = 9.9 ≈ 10

O = 6.64x10⁻⁴ moles O / 6.51x10⁻⁴ moles O = 1

That means empirical formula is:

As molar mass of this empirical formula is:

10*12g/mol + 20*1g/mol + 1*16g/mol = 156g/mol = Molar mass of the compound,

Molecular formula is also C₁₀H₂₀O

Answer:

Life science is alternatively known as biology, and physical science is subdivided into branches: physics, chemistry, astronomy and Earth science. These branches of natural science may be further divided into more specialized branches. But that is more writting to explain

Explanation:

Answer: biology, climate Science, astronomy etc.

Explanation:

The scientific disciplines that are related to chemistry mentioned or alluded to in the article are:

• Biology: Biology is a natural science which studies living organisms, and this include their molecular interactions, evolution, physical structure, and chemical processes.

• Astronomy: Astronomy is the study of space, and the universe. In astronomy, the stars, planets, and galaxies are all studied.

• Climate science: Climate science is also referred to as climatology and it's the scientific study of climate.

Answer:

1. Atmospheric science, environmental science, climate science, biology, astronomy, human physiology and medicine

Explanation:

Because I said so

Carbon-12 and carbon-13 are isotopes of carbon as both have same atomic number. The correct option is D.

Isotopes are members of an element family that possess the identical number of protons but differ in their numbers of neutrons.

The atomic number of an element on the Periodic Table is determined by the number of protons in its nucleus. Carbon, for illustration, has six protons and therefore the atomic number is 6.

The three share the position in the periodic table assigned to atomic number 1 and are thus referred to as hydrogen isotopes. The mass of an isotope influences many important properties.

Isotopes can form naturally through radioactive decay of a nucleus or artificially by inundating a stable nucleus with charged particles in a nuclear reactor using accelerators or neutrons.

Thus, the correct option is D.

For more details regarding isotopes, visit:

https://brainly.com/question/11680817

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Answer:

53977.5g

Explanation:

1lb = 2.205

119 ×[tex]\frac{1lbs}{2.205kg} = 53.9775[/tex]×[tex]\frac{1000g}{1kg}[/tex] = 53977.5g

Explanation:

pressure decrease and collision decreases

An intrinsic property is independent of how much of a material is present and is independent of the form of the material, one large piece or a collection of small particles. Intrinsic properties are dependent mainly on the fundamental chemical composition and structure of the material.

Answer:

B: It depends on how a substance was formed.

Explanation:

took the test

Intensive property is the same for every sample of a single substance.

INTENSIVE AND EXTENSIVE PROPERTIES:

Hence, intensive property is the same for every sample of a single substance.

Learn more: https://brainly.com/question/3006850?referrer=searchResults

Answer:

In 70s we were not much familiar with coca cola. Pepsi were sold in liter and milk is traditionally sold locally sold in gallon.

Explanation:

Sarah Brew said that unlike to the global brand like coca cola, Pepsi are sold at global level but milk is sold at local level follow the local custom measurement. If we look back in history, the milkman sold milk door to door in the form of quartz and the gallons. Same things consumers expected from seller.

These are two ways that play a role in grocery shopping. That's  why the congress make a product list in form of liter and metric and traditional inches , gallons, pounds, milk etc.

Explanation:

I think it really depends on what you are using them for but I would say in general that using marbles means you can't investigate the subatomic particles (electron orbitals, nucleus etc.) and also you can't exactly model atomic binding with marbles as they don't really stick together.

I would say those are the two main things but once again really depends on what they're being used for.

Hope this helped!

Answer:

C & D

Explanation:

The cell theory states that every living organism are made of some of the smallest functional unit called the cells. The three scientist who contributed to its development are Rudolf Virchow, Theodor Schwann and Matthias Schleiden.

Cell theory says that cell is considered to be the basic unit of our lives and living things are composed of one or more than one cells. The new cells in an organism arises from the existing cells.

Answer:

7) Example: Gravitational force

Gravitational force, also known as gravity, is a type of non- contact force.

10) Unbalanced forces can cause an object to accelerate, make a stationary object move, or cause a moving object to stop.

12) Gravitational force, Frictional force, Magnetic force

13) Friction is beneficial when we are walking as it prevents us from slipping.

For the table, find the net force first and that would help us to find the direction and the type of force (balanced/ unbalanced).

As written in Q11, add all the forces together to determine the net force acting on an object. More specifically, add the forces that act in one direction together. Then subtract the forces acting in the other direction.

Let's look at the teddy bear (Q14 -16):

Take note that we have to look at the direction of the arrow not which side the arrow is on (left/ right of the bear).

Total force acting towards the left

= 16 +7

= 23N

Total force acting on the right= 22N

Net force

= 23 -22

= 1N towards the left

Thus, 14) Unbalanced (since the net force is not 0N)

15) 1N

15) 1N16) left

Vase question:

Total downward force

= 11 +33

= 44N

Total upward force

= 25 +19

= 44N

Net force= 0N

17) Balanced

17) Balanced18) 0N

17) Balanced18) 0N19) No direction

Bicycle question:

Total force acting towards the right

= 65 +115

= 180N

Total force to the left= 170N

Net force

= 180 -170

= 10N to the right

20) Unbalanced

20) Unbalanced21) 10N

20) Unbalanced21) 10N22) To the right

Answer:

The volume is

Explanation:

In order to solve for the volume we use the formula for Boyle's law which is

where

P1 is the initial pressure

V1 is the initial volume

P2 is the final pressure

V2 is the final volume

Since we are finding the final volume we are finding V2

Making V2 the subject we have

From the question

P1 = 300 mmHg

V1 = 300 mL

P2 = 500 mmHg

Substitute the values into the above formula and solve for the final volume obtained

That's

We have the final answer as

Hope this helps you