46 What are the products when potassium hydroxide reacts with hydrochloric acid?(1) KH(s), Cl-(aq), and OH-(aq)(2) K(s), Cl2(g), and H2O(ℓ)
(3) KCl(aq) and H2O(ℓ)
(4) KOH(aq) and Cl2(g)

Answers

Answer 1

Answer: the answer is (3). Chemical equation is in the picture above.

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This is an interaction in which two waves meet, matching crest to crest and trough to trough. The resultant wave will have an amplitude of the sum of the two.

Answers

I'm Osei George the answer is interference

Answer:deferehug

Explanation:

Bronze contains 90 to 95 percent copper and 5 to 10 percent tin. Because these percentages can vary, bronze is classified as(1) a compound (3) a mixture
(2) an element (4) a substance

Answers

Answer: a mixture.

Justification:

1) Pure substances have a definite chemical formula: the same kind of atoms with the same fixed ratios and chemical bonds. Therefore, the percents of each element do not varye.

2) Elements and compounds are pure substaces. For example, Fe, Mg, Ti, are elements, and CO₂, CO, H₂CO₃ are compounds. Each of them will have always the same kind of atoms, in the same ratio and with the same chemcial bonds. Therefore the percents of the elements do not varye.

3) Mixtures are formed by the physical combination (not chemical bonds) of different elements or compounds in variable proportions. As indicated, this describes the material bronze, in virtue of the variation of its composition. Other examples of mixtures are solutions (like brines), air, ocean water, and milk: different brines, different oceans and different milk have different contents of elements or compounds.

Answer:

(3) a mixture

Explanation:

Castle learning

Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?calcium, chromium, potassium
chromium, calcium, potassium
potassium, calcium, chromium
potassium, chromium, calcium

Answers

Answer: The correct order is:

Potassium > calcium > chromium

Explanation:

Potassium belongs to the group of alkali metals with group number 1 in a periodic table. Potassium easily displaces hydrogen atom from the water molecule.

Where as calcium belongs to group (II) and easily displaces hydrogen atom from the water molecule.

In a reactivity series potassium is comes before the calcium metal which means that it is more reactive than calcium metal.

Potassium > calcium

Where as chromium metal is member of group 6 and chromium reacts with steam and acids to form hydroxides. But doesn't reacts with water(in liquid phase) which means it less reactive then potassium and calcium.

Potassium > calcium > chromium

potassium, calcium, chromium

Write formula for these compounds: a. Sodium iodide b. Tin (II) chloride c. Potassium Sulfide d. Calcium iodide

Answers

All these compounds are ionic compounds and the formula of the compounds are: Tin(II) chloride - SnCl₂, potassium sulphide- K₂S, calcium chloride - CaCl₂.

What is chemical formula?

The chemical formula of a compound make them easy to identify the elements of composition. The formula of a compound s given with the chemical symbols of elements.

The subscripts of atoms is the number of that elements in the compounds. For instance, tin(II) chloride is formed by losing two electrons from the metal tin -Sn to each two chlorine atoms and thus the formula is SnCl₂.

Potassium sulphide is an ionic compound formed by losing one electrons from potassium to the sulphur atom. Sulphur needs two electrons to attain octet thus it binds with two K atoms and the formula is K₂S.

Calcium chloride is formed by the ionic bonding between calcium and chlorine atom. Calcium has the valency of two thus, it donates two electrons each to each chlorine atoms and hence the formula is CaCl₂.

To find more on chemical formula, refer here:

brainly.com/question/29031056

#SPJ2

a. Sodium iodide: NaI
b. Tin (II) chloride: SnCl2
c. Potassium Sulfide: K2S
d. Calcium iodide: CaI2

Apparently, the first organic compound synthesized in the lab was sucrose. true or false

Answers

The correct option is False.

The first organic compound synthesized in the lab was urea. It was synthesized from silver cyanate and ammonium chloride. It is named Wöhler synthesis after the German chemist.

NH₄Cl + AgNCO → H₂NCONH₂

Urea was first synthesized in 1828 and its synthesis was the beginning of modern organic chemistry.

False, it was Urea
Hope this helps! :)

Without the sun, life on earth would not exist. There would be no warmth, no plants, no animals, no night and day. To power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. This process is known as __________.
A) fusion
B) fission
C) radiance
D) solar flaring

Answers

Answer: Option (A) is the correct answer.

Explanation:

The process in which two or more small nuclei combine together to result in the formation of a larger nuclei is known as fusion.

In Sun, four hydrogen nuclei combine together to result in the formation of helium atom. This combining of small hydrogen nuclei to form a large helium nuclei represents fusion process occurring inside the Sun.

Thus, we can conclude that to power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. This process is known as fusion.

Answer: -

Without the sun, life on earth would not exist. There would be no warmth, no plants, no animals, no night and day.

To power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. This process is known as

A) Fusion

Fusion produces a lot of energy but very little radioactive waste.

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