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zepelin [54]
3 years ago
9

Which of the following substances has

Chemistry
2 answers:
Dmitry [639]3 years ago
4 0
D.  all of the above, although I do find it hard to believe something like flour would have a melting point, I looked up my answer to double check. 
alina1380 [7]3 years ago
3 0

Answer:

D all of the above

Explanation:

Melting point represents the exact temperature at which the solid state changes to the liquid of a given substance. Water is one of the most commonly used elements to exemplify the melting point principle. For this solid state (ice) to take the form of liquid water, it must be exposed to a temperature of at least 0 °C. Thus, the melting point of water is equal to 0 °C.

The salt has a melting point of 801 ° C, the melting point of sugar is 185 ° C and the melting point of flour is 264 ° C. From this we can see that all these products have a higher melting point than water.

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BF3 type of compound
USPshnik [31]

Answer:

Corresponds to a covalent compound.

Explanation:

Both Boron and Fluorine are nonmetals, forming a covalent bond, the result of which is the boron trifluoride compound (BF3). This is a highly toxic gas.

It is synthesized by the reaction between hydrogen fluoride and boron oxide:

B2O3 + 6 HF → 2 BF3 + 3 H2O

6 0
4 years ago
What ion charge patterns are in the periodic table
Rzqust [24]
<span>the elements in groups1a, 2a, 3a have positive charges according to their group numbers</span>
8 0
4 years ago
In a titration, acetic acid is used as the analyte and sodium hydroxide is the titrant. At the equivalence point, will the ph be
ValentinkaMS [17]

Titration involves acetic acid as the analyte and sodium hydroxide as the titrant. ph is more than 7 at the equivalency point.

The titration's equivalence point is the moment at which adequate titrant has been introduced to react to all of the material being titrated. A strong acid combined with something like a weak base produces a somewhat acidic salt. Similarly, combining a strong base with a mild acid yields a slightly basic salt.

When acetic acid combines with NaOH, it produces the salt sodium acetate and water. When acetic acid, CH3COOH, interacts with sodium hydroxide, sodium acetate, CH3COONa, and water are formed.

CH3COO- + H2O → CH3COOH + OH-

The acetate ion's reaction raises the ph to over 7.

Moles of acetic acid is equivalent to moles of sodium hydroxide at the equivalence point. As additional sodium hydroxide is added, the solution will become pink.

Read more about titration at

brainly.com/question/28989947?referrer=searchResults

#SPJ4

5 0
2 years ago
Define Each Piece of the Microscope
horrorfan [7]

1) Body tube (Head): The body tube connects the eyepiece to the objective lenses. Arm: The arm connects the body tube to the base of the microscope. Coarse adjustment: Brings the specimen into general focus. Fine adjustment: Fine tunes the focus and increases the detail of the specimen.

2)Microscopes are made up of lenses for magnification, each with their own magnification powers. Depending on the type of lens, it will magnify the specimen according to its focal strength.

3)In simple magnification, light from an object passes through a biconvex lens and is bent (refracted) towards your eye. ... The eyepiece lens usually magnifies 10x, and a typical objective lens magnifies 40x. (Microscopes usually come with a set of objective lenses that can be interchanged to vary the magnification.)

3 0
3 years ago
What solvent should you use to measure the density of naphthalene acid?
masya89 [10]
Water b/c it is insoluble in water. it is soluble in cyclohexane and sparingly <span>soluble in ethyl alcohol.

Hope this helps</span>
3 0
3 years ago
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