What is the BEST scientific definition of the term “force”?

They transfer pollen from one flower to another. Hence option A is the correct answer.

Pollen is a mass of microspores in a seed plant that appears as fine dust. Each pollen grain is a minute body of diverse shape and structure that forms in the male structures of seed-bearing plants and is transferred to the female structures by various ways (wind, water, insects, etc.) where fertilization happens.

In summary, pollination is the initial stage in the production of seeds, which results in the formation of new plants.

Learn more about pollination here:

https://brainly.com/question/3431390

#SPJ1

Answer:

you can use the example of two magnets

Answer: The gravitational force Increase as the objects get closer.

Explanation:

Answer:

58.44277 I hope this works best of luck for you

Final concentrations of acsch and tacrine in that reaction is 600x10⁻¹²mm.

The symptoms for mild to moderate Hypertension are managed by tacrine. Alzheimer's disease cannot be cured or prevented from worsening with tacrine. However, some Alzheimer's sufferers may benefit from tacrine since it helps them think more clearly.

The behavior, procedure, or event of responding. B: opposition or resistance to a power, influence, or movement, particularly: a propensity for an old-fashioned and typically obsolete social or political order or policy.

To know about Reaction visit:

https://brainly.com/question/2210264

#SPJ4

Answer:

I'm pretty sure it's A)Helium

Explanation:

Answer:

AIR

Explanation:

Explanation:

a) 0.4998 mol

b) 0.249 mol

Explanation:

2 moles of lead oxide ->

2PbO2 -> 2PbO + O2

the appropriate tool for the situation. volume of a cube is graduated cylinder

A popular piece of scientific equipment used to measure the volume of a liquid is a graduated cylinder, sometimes referred to as a measuring cylinder or mixing cylinder. Its form is slender and cylindrical. The measured liquid amount is indicated by each marked line on the graduated cylinder. An item of laboratory equipment known as a measuring cylinder, graduated cylinder, cylinder measurement, or mixing cylinder is used to measure the amount of liquids, chemicals, or solutions during routine lab work. Compared to standard laboratory flasks and beakers, graduated cylinders are more exact and accurate.

To know more about graduated cylinder refer to  https://brainly.com/question/25658526

#SPJ1

Answer:

B-Sucrose molecules are too large to conduct electricity in once dissolved in water.

D-Salts, like NaCL, have ionic bonds and are considered to be electrolytes:when dissolved in water, salts dissociate and form ions.

Explanation:

Explanation:

B) Answer And D) Answer Are Correct.

Hope It Helps U..

Answer:

To communicate with each other

Explanation:

Cows use sound (mooing) to communicate with each other and their environment. Cows are herd animals and have complex social structures. Mooing is one way that they interact and how they express their emotions

The group number of the element in the periodic table is equal to 15 as it has five valence electrons. Therefore, .option D is correct.

Valence electrons can be explained as the electrons occupying the outer shell of an atom while the electrons placed in the inner shell are known as core electrons. Lewis structures of the elements can be helpful to calculate valence electrons and know the types of bonds.

Valence electrons can be filled in different shells, causing interaction between atoms and leading to the formation of chemical bonds.

The five elements have five electrons in their valence shell therefore it belongs to nitrogen family. The group number can be calculated as 10 + 5 = 15

Learn more about valence electrons, here:

brainly.com/question/18612412

#SPJ1

The third shell can hold 32 electrons. Within the shells, electrons are further grouped into subshells of four different types, identified as s, p, d, and f in order of increasing energy.

A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound). One of the three main types of particles within an atom is an electron that is bonded to it; the other two are protons and neutrons. The nucleus of an atom is made up of electrons, protons, and neutrons together.

Early atomic researchers thought that electrons in an atom orbited its nucleus in spherical orbits at precise distances, much like planets orbit stars. The orbits that are farthest from the nucleus in this model—known as the Bohr model—contain the most energy. The atom emits electromagnetic radiation when an electron transitions from a higher energy orbit to a lower energy orbit. Letters are also sometimes used to refer to the shells. These include K, L, M, N, O, P and Q, again starting from the nucleus and working out. For instance, the third shell might be referred to as the M shell or 3m.

To learn more about electrons refers to;

https://brainly.com/question/14069394

#SPJ1

Answer:

First one answer is physical and other remaning chemical

Answer:

Hydrogen is a colorless, tasteless, and odorless gas.  

physical

--------------------------------------------------------------------------------------------------------------

Hydrogen is very combustible in the presence of oxygen.  

chemical

--------------------------------------------------------------------------------------------------------------

Hydrogen is very reactive with most elements.  

chemical

--------------------------------------------------------------------------------------------------------------

Hydrogen is the least dense of all elements.  

physical

Ammonia and phosphoric acid are the reactants for the reaction 9, for the formation of Ammonium Phosphate.

What are ionic reactions?

Ionic reaction is the reaction of ions that are anions and cations to form a compound in a medium in which they are dissolved. When ions of water-soluble salts interact with each other in aqueous medium results in the formation of water-insoluble salts.

9) 3NH₃ + H₃PO₃ → (NH₄)₃PO₄

10) CaCO₃ + HCl → CaCl₂ + H₂CO₃

11) SnO₂ + HCl → SnCl₂ + H₂O

12) Ca(OH)₂ + HNO₃ → Ca(NO₃)₂ + H₂O

13) C₃H₅O(COOH)₃ + 3KOH → C₃H₅O(COOK)₃ + 3H₂O

14) 2Mg + C₃H₅O(COOH)₃ → (C₃H₅O(COO)₃)Mg₂ + H₂

15) H₃PO₄ + 3KOH → K₃PO₄ + 3H₂O

Therefore, Ammonia and phosphoric acid are the reactants for the reaction 9, for the formation of Ammonium Phosphate.

Learn more about ionic reactions, here:

https://brainly.com/question/29556253

#SPJ1

When a solid is heated, its surface area expands due to a type of thermal expansion known as superficial expansion.

To learn more about matter refer to :

https://brainly.com/question/1172629

#SPJ1

Answer:

5

Explanation:

The 25.0 mL sample of the 0.150 M hypochlorous acid, HClO, is titrated with a 0.150 M NaOH solution. The pH after the 13.3 mL of the base is added is 7.58. The correct option is B.

The HClO reacts with NaOH as follows:

HClO + NaOH → H₂O + NaClO

The concentration of NaClO is:

Concentration =  0.150 M / 2

Concentration = 0.075 M

The equilibrium of the NaClO is:

NaClO(aq) + H₂O(l) ⇄ HClO(aq) + OH-(aq)

Where,

The Kb of the reaction = 1.0 x 10⁻¹⁴ / Ka

= 1.0 x 10⁻¹⁴ / 3.0 x 10⁻⁸

= 3.33x10⁻⁷

= [HClO] [OH-] / [NaClO]

The [NaClO] = 0.075 M

The [HClO] = [OH-] = X

3.33x10⁻⁷ = [X] [X] / [0.075M]

2.5 x 10⁻⁸ = X²

X = 1.58 x 10⁻⁴ M = [OH-]

pH = - log (1.58 x 10⁻⁴)

pH = 7.58.

The correct option is B.

To learn more about pH here

https://brainly.com/question/15289714

#SPJ4

Answer:

Los modelos deben basarse en principios científicos sólidos.

Explanation:

Espero que esto ayude!

Answer: You can increase the weight, then test the speed, and make the weight normal and test the speed, and mark which one travels faster.

Explanation: This would test your hypothesis by comparing the speeds of the cars when more mass is added. Calculating the difference of the speed with more mass, and the speed with normal mass would give you your answer. A positive number would prove your hypothesis and a negative number would disprove it.

Answer:  The radius of atoms increases as you move down a particular group in the periodic table of elements because an atom grows larger as the number of electronic shells increases.

Explanation:

https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Physical_Properties_of_Matter/Atomic_and_Molecular_Properties/Atomic_Radii

The patient results were analyzed to determine the corresponding condition based on their blood gas values. The matches were identified as follows: Patient 1 had compensated D. respiratory alkalosis, Patient 2 had  uncompensated E. metabolic acidosis, Patient 3 had compensated C. respiratory acidosis, and Patient 4 had uncompensated E. metabolic acidosis.

To match the patient results to the corresponding type of condition, we can analyze the given data:

1. Patient 1: \(HCO_3\) = 24, \(CO_2\) = 45, pH = 7.6

  - \(HCO_3\) within normal range (22-28 mEq/L)

  - \(CO_2\) within normal range (35-45 mmHg)

  - pH slightly elevated (normal range 7.35-7.45)

  These values suggest a compensated respiratory alkalosis.

2. Patient 2: \(HCO_3\) = 17, \(PCO_2\) = 39

  - \(HCO_3\) below normal range

  - \(PCO_2\) within normal range

  These values indicate uncompensated metabolic acidosis.

3. Patient 3: \(HCO_3\) = 25, \(CO_2\) = 33

  - \(HCO_3\) within normal range

  - \(CO_2\) below normal range

  These values suggest a compensated respiratory acidosis.

4. Patient 4: \(HCO_3\) = 21, \(CO_2\) = 45, pH = 7.2

  - \(HCO_3\) below normal range

  - \(CO_2\) within normal range

  - pH decreased (acidic)

  These values indicate uncompensated metabolic acidosis.

Based on these analyses, we can match the patient results to the following conditions:

A. None of the answer choices are correct.

B. Metabolic alkalosis.

C. Respiratory acidosis.

D. Respiratory alkalosis.

E. Metabolic acidosis.

The correct matches would be:

Patient 1: D. Respiratory alkalosis.

Patient 2: E. Metabolic acidosis.

Patient 3: C. Respiratory acidosis.

Patient 4: E. Metabolic acidosis.

To know more about respiratory alkalosis refer here:

https://brainly.com/question/10889363#

#SPJ11

Answer:

536.79608

Explanation:

Answer:

Sulphur

Explanation:

Hydrogen sulphide

Chemical formula: \(H_{2} S\)

Oxidation states: +1 and -2

Hydrogen selenide

Chemical formula: \(H_{2} Se\)

Oxidation states : +1 and -2

Hope you found this helpful.

The correct option is 2. cesium.

The following information should be considered:

Learn more: brainly.com/question/17429689

1. The balanced redox equation in acidic conditions is:

2. The balanced redox equation in acidic conditions is:

3. The balanced equation in acidic conditions is:

The redox reactions occurring in acidic conditions are balanced as follows;

1. Br₂ (l) + SO₂ (g) → Br⁻ (aq) + SO₄²⁻ (aq)

Oxidation: Br₂ (l) + 2e- → 2 Br⁻ (aq)

Reduction: SO₂ (g) + 2 H₂O (l) → SO₄²⁻ (aq) + 4H⁺ (aq) + 2e-

Combine the two half-reactions:

Br₂ (l) + SO₂ (g) + 2 H₂O (l) → 2 Br⁻ (aq) + SO₄²⁻ (aq) + 4H+(aq)

2. HgS(s) + Cl⁻ (aq) + NO₃⁻ (aq) → HgCl₄²⁻ (aq) + NO₂ (g) + S(s)

Oxidation: HgS(s) + Cl⁻(aq) → HgCl₄²⁻ (aq) + S(s) + 2e⁻

Reduction: NO₃⁻ (aq) + e⁻ → NO₂ (g)

Balancing the oxidation half-reaction:

HgS(s) + 4 Cl⁻ (aq) → HgCl₄²⁻ (aq) + S(s) + 2e-

Balancing the reduction half-reaction:

2 NO₃⁻ (aq) + 2e⁻ + 4 H⁺ → 2 NO₂ (g) + 2 H₂O (l)

Combine the two half-reactions:

HgS(s) + 4 Cl⁻ (aq) + 2 NO₃⁻ (aq) + 4 H⁺ → HgCl₄²⁻ (aq) + S(s) + 2 NO₂ (g) + 2 H₂O (l)

3. Cl₂ (g) → ClO₃⁻ (aq) + Cl⁻ (aq)

Oxidation: Cl₂ (g) → ClO₃⁻(aq) +

Reduction: Cl₂ → Cl⁻ (aq)

Balancing the oxidation half-reaction:

Cl₂ (g) + 3 H₂O → ClO₃⁻(aq) + 6 H⁺ + 5e⁻

Balancing the reduction half-reaction:

Reduction: Cl₂ + 2e⁻ → 2 Cl⁻ (aq)

Multiply oxidation by 2 and reduction by 5

Oxidation: 2 Cl₂ (g) + 6 H₂O → 2 ClO₃⁻(aq) + 12 H⁺ + 10e⁻

Reduction: 5 Cl₂ + 10e⁻ → 10 Cl⁻ (aq)

Combining the two equations:

2 Cl₂ (g) + 6 H₂O + 5 Cl₂ → 2 ClO₃⁻(aq) + 12 H⁺ + 10 Cl⁻ (aq)

Learn more about redox equations at: https://brainly.com/question/21851295

#SPJ4

Ca²⁺ is the most tightly controlled ion in the cell that is involved in secretion of signal molecules. The answer is: b.

Calcium (Ca²⁺) is the most tightly controlled ion in the cell that is involved in secretion of signal molecules. It is a second messenger that plays a role in many cellular processes, including muscle contraction, nerve impulse transmission, and hormone secretion.

Ca²⁺ levels are tightly regulated by the cell, and changes in Ca²⁺ levels can trigger a variety of cellular responses.

Ca²⁺ is stored in the endoplasmic reticulum (ER) and released into the cytosol in response to a variety of stimuli, including hormones, neurotransmitters, and electrical signals.

Once in the cytosol, Ca²⁺ can bind to a variety of proteins, including enzymes, structural proteins, and regulatory proteins. This binding can alter the activity of these proteins, leading to a variety of cellular responses.

Ca²⁺ is also involved in the secretion of signal molecules. When Ca²⁺ levels rise in the cytosol, it can trigger the release of hormones and neurotransmitters from the cell. These signal molecules can then bind to receptors on other cells, triggering a variety of responses in those cells.

Ca²⁺ is a versatile and important signaling molecule that plays a role in many cellular processes. Its levels are tightly regulated by the cell, and changes in Ca²⁺ levels can trigger a variety of cellular responses.

Therefore, the correct option is B, Ca²⁺

To know more about signal molecules, refer here:

https://brainly.com/question/13259065#

#SPJ11

In a physical change, the substance's shape or appearance changes, but the type of matter it contains stays the same. But when matter undergoes a chemical change, at least one new substance with novel properties is created.

Chemical synthesis, or, alternatively, chemical decomposition into two or more different substances, occurs when one substance reacts with another to create a new substance.

Physical modifications are those that affect a chemical substance's form but not its chemical composition. Physical changes are usually unable to separate compounds into chemical elements or simpler compounds, but they can be used to separate mixtures into their component compounds.

An overview was given as your information is incomplete.

Learn more about chemical change on:

https://brainly.com/question/19794032

#SPJ1