Please help me! Thank you!

Can someone plss help me with this question!!

Ivahew [28]

Answer:

it is B because if u said A or D it would have been wrong and if u said C u would be going left.

Explanation:

7 0

2 years ago

Explain what happens in the reaction between sodium hydroxide and hydrochloric acid.Explain how protons are donated and accepted

Artyom0805 [142]

Answer:

Hydrochloric acid and sodium hydroxide interact, resulting in salt and a release of heat. As we can see, the result of the interaction of two highly aggressive compounds is table salt and water – compounds that are ultimately harmless, even beneficial, to human beings.

2) An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition). A base is a substance that can accept protons or donate a pair of valence electrons to form a bond.A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids. A reaction between an acid and base is called a neutralization reaction.

Explanation:

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7 0

2 years ago

Low frequency waves are ______apart. *

aivan3 [116]

Low frequency waves are far apart

7 0

2 years ago

Ionic solids dissolve in water and break up into their ions. However, some ionic solids only partially dissolve, leaving a signi

Xelga [282]

Answer: The expression of $K_{sp}$ for calcium fluoride is $K_{sp}=[Ca^{2+}][2F^-]^2$

Explanation:

Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.

The given chemical equation follows:

$CaF_2\rightleftharpoons Ca^{2+}(aq.)+2F^-(aq.)$

1 mole of calcium fluoride produces 1 mole of calcium ions and 2 moles of fluorine ions.

The expression of $K_{sp}$ for above equation follows:

$K_{sp}=[Ca^{2+}][2F^-]^2$

Hence, the expression of $K_{sp}$ for calcium fluoride is $K_{sp}=[Ca^{2+}][2F^-]^2$

4 0

3 years ago

By 1700, how many elements had scientists discovered and isolated?

mariarad [96]

Answer:

By 1700, 13 elements had been discovered and isolated by the Scientists.

Option (a)

Explanation:

The copper, gold and silver are the elements which have been known from thousands of years. In the early days of 1700, the scientist discovered only 12 elements, later on one more element was discovered.

Later in the era of 1800, the scientist research and find new elements, where they organize it methodically, according to the physical and chemical properties.

After a long research in 1900 scientist discovered more than 80 elements.

8 0

3 years ago