Plz answer these questions :

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Answer:Acid ,Base ,Salt

Explanation:    An acid is defined as a substance whose water solution tastes sour, turns blue litmus red and neutralizes bases

A substance is called base if its aqueous solution tastes bitter, turns red litmus blue or neutralizes acids.

Salt is a neutral substance whose aqueous solution does not affect litmus.

Answer: kindly check explanation

Explanation:

Characteristics of scientific thinking and investivating:

1) Empiricism : Also called empirical evidence maybe classed as natural evidences used to butress or support a certain notion or fact usually attainable from experience or teaching.

11.) Rational : Rational thinking or attribute could simply be tagged as reasonable and do not negate laid down facts.

111.) Skepticism: This is very imperative in scientific research as it opens the way to further research enabling researchers to gather more evidences required to establish a strong argument.

2.) IMPORTANCE OF SCIENCE LITERACY

Science literacy simply empowers mankind. Nourishing researchers or literates with the knowledge of its natural environment and enabling them understand, explore and exploit resources in our environment.

3.) Skills and tools scientist need :

Skills :

1) Curiosity: The ability to frame and and ask questions is key to establishing a purpose for research. Asking the right questions is key in a scientific process.

11) Data gathering or collection: Obtaining the right data capable of proferring the essential solution to our research question is key to obtaining logical insight.

111) Communication: Once research is complete, it is essential that researchers possess the skills required in transmitting their conclusion in a way which is both simple, logical and sensible.

Tools include common laboratory equipments such as beaker, testube, measuring cylinders, microscope and so on.

4.) The scientific or inquiry method provides a stepwise, easy to understand and logical approach to problem solving, Hence, providing a lucid and evidence - based conclusion which is both practicable and reproducible.

5.) The main reason for the modification of scientific theories is that they are susceptible to further research or study. As a result of evolution and change in trend depending on various natural and environmental factors, modification may occur in the form of review without abrogating previously existing studies.

6.) Science and technology has enabled mankind to adjust and cope with the continuous evolutionary changes in our environment. Enabling us to use these findings to ease our everyday living standard.

Answer:

See explanation

Explanation:

Sr(s) + 2HCl(aq) -----> SrCl2(aq) + H2(g)

Ionically;

Sr(s) + 2Cl^-(aq) ----> SrCl2(aq)

If we look at the reaction above, strontium atom was dissolved in hydrochloric acid. The strontium atom is now oxidized by the acid to give Sr^2+ ion according to the equation shown above.

Answer:

Quantitative and Qualitative :)

Explanation:

Protons are the subatomic particles which has positive charge.

The protons define the element.

So for example, every element that has 1 proton is hydrogen.

Hydrogen is a gas.

Every element that has 23 protons would be vanadium.

Vanadium is a chemical element with an atomic number 23.

Answer:

maltose

Explanation:

If we intend to determine the largest molecule, then we must look at the relative molecular mass of each molecule because the larger the molar mass, the larger the molecule.

Hydrogen =2 gmol-1

Carbon dioxide = 44 gmol-1

Ammonia = 17 gmol-1

Maltose= 342.3 g/mol

Hence maltose is the largest molecule among the options.

Answer:

20 m/s

Explanation:

Answer:  

In this case the mass number would be 11.

Explanation:

The mass number of an element is the sum of the protons and neutrons. The number of neutrons for a given element is the only number that can change and still have the identity of the element stay the same, (because the atomic number is the number of protons).

✅Models are approximations and omit details, but a good model will robustly output the quantities it was developed for. Models do not always predict the future. This does not make them unscientific, but it makes them a target for science skeptics. ... But correct predictions alone don't make for a good scientific model

IamSugarBee

Answer:

Explanation:

CH₃COOH(aq) + NaHCO₃(s) -> CO₂(g) + H₂O(l) + Na+(aq) + CH₃COO-(aq)

The equation is already balanced .

In the reaction acetic acid reacts with sodium bicarbonate to produce carbon dioxide gas , water and sodium acetate . Sodium acetate will be in ionic form ie in the form of Na⁺ ( sodium ion ) and CH₃COO ⁻ ion ( acetate ion ) .

This is an acid base neutralisation reaction . one mole of acetic acid reacts with one mole of sodium bicarbonate to produce one mole of carbon dioxide gas , one mole of water and one mole of sodium acetate in ionic form .

The Answer your looking for is

He walked  the distance of: = 184 m

Answer:The answer is C:two or more forms of an atom that contain different numbers of neutrons. An isotope is when there are different forms of an atom, in terms of neutrons. Not to be confused with cations or anions, which are atoms with a difference of electrons or protons, making them charged.

Explanation: I took chemistry in 6th grade.

Answer:

Lo más probable es que esté haciendo la conversión de Celsius a Kelvin

En ciencia, la unidad Kelvin se usa para medir la temperatura

La fórmula para Celsius a Kelvin es C + 273 = K

Explanation:

me das  coronita

Pertanyaan ini tidak ditulis dengan benar.

Pertanyaan Lengkap:

Duah buah gaya masing masing F1=10N dan F2=5N bekerja pada sebuah benda yang terletak pada suatu permukaan lantai. Jika benda berpindah ke kanan sejauh 5 meter,usaha yang dilakukan pada benda oleh kedua gaya tersebut adalah

Answer:

75 Nm or 75 Joules

Explanation:

Dari pertanyaan tersebut, kami telah diberikan parameter berikut:

F1 = 10N

F2 = 5N

D = 5 Meter.

Kita diminta untuk mencari atau menghitung usaha yang dilakukan pada benda oleh dua gaya.

Rumus kerja yang dilakukan pada suatu benda dengan dua gaya =

W = (F1 + F2) × D

Dimana D = Perpindahan benda

W = (10N + 5N) × 5m

W = 15N × 5m

W = 75Nm atau 75Joules

Oleh karena itu, usaha yang dilakukan pada benda tersebut dengan dua gaya = 75Nm atau 75 Joules

Answer: The stick model method

Answer:

D. The stick model method

Explanation:

Answer:

Mass of liquid ammonia is 0.035g.

Explanation:

I hope this will help u

Have a nice day

Answer:

55,000,000

Explanation:

550 hectometers [hm] = 55,000,000 millimeters [mm]

Answer:

There exists a relationship between pressure and volume through Boyle's Law. It states that when temperature is held constant in thermodynamic syatems, the volume increases as the pressure decreases (and is true the other way around).

Hope this helps :)

Answer:

tap to view photo

1.melting

2.freezing

3.vaporization

4.condensation

Answer:

Density=mass / volume.

Density=6×24=144g/cm^3.

Answer:

0.25 g/mL

Explanation:

Density = mass/volume

Volume = 24.0 mL

Mass = 6 grams

Density = 6 grams/24.0 mL

Density = 0.25 grams/mL

Answer:

b

Explanation:

Answer:

B

Explanation: All answers are true

Answer:

85.6 °C

Explanation:

Precision in scientific measurements refers to how close together the results of a repeated scientific measurement is. In this particular case where the melting point of fluorenone is being determined, precision refers to how close together the values from repeated measurements of the melting point of fluorenone is.

If we look at the values, the only one that is not close to others is 85.6 °C. Hence, if we remove this particular value, the data can be regarded as being precise.

Answer:

its C

Explanation:

how i know is did it on a piece of paper and got C for the answer. Have a nice day!

Answer:

[tex] \boxed{ \huge{ \boxed{ \sf{ \: 7}}}}[/tex]

Option C is the correct option

Explanation:

Proton = 3

Neutron = 4

To find : Atomic mass

Atomic mass is the total number of protons and neutrons present in an atom of an element.

So, Atomic mass = Proton + Neutron

= 3 + 4

= 7

Hope I helped!

Best regards! :D

Answer:

3

Explanation:

Lithium's atomic number is 3. it has 3 protons in its model

Answer:

The average yearly rate of change of carbon-14 during the first 5000 years = 0.0004538 grams per year

Explanation:

Given that the mass of the carbon 14 at the start = 5 gram

At the end of 5,000 years we will have;

[tex]A = A_0 \times e^{-\lambda \times t}[/tex]

Where

A = The amount of carbon 14 left

A₀ = The starting amount of carbon 14

e = Constant = 2.71828

[tex]T_{1/2}[/tex] = The half life

[tex]\lambda = 0.693/T_{1/2}[/tex]

t = The time elapsed = 5000 years

λ = 0.693/[tex]T_{1/2}[/tex] = 0.693/5730 = 0.0001209424

Therefore;

A = 5 × e^(-0.0001209424×5000) = 2.7312 grams

Therefore, the amount of carbon 14 decayed in the 5000 years is the difference in mass between the starting amount and the amount left

The amount of carbon 14 decayed = 5 - 2.7312 = 2.2688 grams

The average yearly rate of change of carbon-14 during the first 5000 years  is therefore;

2.2688 grams/(5000 years) = 0.0004538 grams per year

The average yearly rate of change of carbon-14 during the first 5000 years = 0.0004538 grams per year.

Answer:

Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish. ... Anodizing is accomplished by immersing the aluminum into an acid electrolyte bath and passing an electric current through the medium.

Answer:

Anodising is a process of forming a thick oxide layer of aluminium. Aluminium develops a thin oxide layer when exposed to air.  This Aluminium oxide coat makes it resistant to further corrosion. The resistance can be improved further by making the  oxide layer thicker. During anodising, a clean aluminium article is made the anode and is electrolysed with dilute sulphuric acid. The oxygen gas evolved at the anode reacts with aluminium to make a thicker protective oxide layer. This oxide layer can  be dyed easily to give aluminium articles an attractive finish

Answer:

iodine sodium preocide

Explanation:

hang hsudb

Answer:

A drug administered at a rate of 13.5 cL/hour has a rate in μL/s of 37.5 μL/s

Explanation:

The given rate at which the blood is administered  = 13.5 cL/hour

The rate at which the question asked to be administered = μL/s

The conversion factor between cL and μL is given as follows;

1 cL = 10,000 μL

Which gives;

13.5 cL/hour × 10,000 μL/cL × 1 hour/(60 × 60 seconds) = 37.5 μL/s

Therefore, a drug administered at a rate of 13.5 cL/hour has an administration rate of 37.5 μL/s.