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3 years ago

Which of the following solids would not decompose on heating

Chemistry

1 answer:

Gekata [30.6K]3 years ago

5 0

Answer:

Anhydrous sodium carbonate is stable to heat and does not decompose even when it is heated to redness. This is because sodium carbonate salt on heating with acids react to release carbon dioxide.

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Please help ASAP, chemistry question. I’ll make your answer the BRAINLIEST. Thanks (picture attached)

Naddika [18.5K]

Answer:

Electrochemical Cell

Explanation:

An electrochemical cell is a device that can generate electrical energy from the chemical reactions occurring in it, or use the electrical energy supplied to it to facilitate chemical reactions in it. These devices are capable of converting chemical energy into electrical energy, or vice versa.

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3 years ago

PLEASE HELP ASAP!! {40 POINTS}

yan [13]

Answer:

The correct answer is -

FALSIFIABLE:

Aloe vera gel can heal wounds by boosting cell renewal.

Drinking aloe juice can reduce the risk of lung cancer.

NON-FALSIFIABLE:

Aloe vera gel is the best natural skin moisturizer.

Aloe vera juice tastes better than carrot juice.

Explanation:

Falsifiable is the ability or chances of any hypothesis, claim or statement to be proved wrong. In such a hypothesis, it is possible to carry an experimental observation that disproves the idea in claim or question.

In the given examples

Aloe vera gel can heal wounds by boosting cell renewal.

Drinking aloe juice can reduce the risk of lung cancer.

There is no observation in the favor of the claim so there more likely to be falsifiable whereas, Aloe vera gel is the best natural skin moisturizer.

Aloe vera juice tastes better than carrot juice are more non-falsifiable as these are based on personal choice or experimental observation.

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3 years ago

Which of the following properties of a protein is least likely to be affected by changes in pH? Tertiary structure Primary struc

chubhunter [2.5K]

Answer:

Primary structure is the correct answer.

Explanation:

The primary structure is the simple level of protein structure.

Primary structure is a basic amino acids sequences in a protein.

In the primary structure, amino acids are attached together by a covalent bond.
Primary structure is when the amino acids are joined together with peptide bonds to produce polypeptide chains

Changes in pH are least likely to change the amino acid sequence or disrupt peptide bonds.

Explanation:

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3 years ago

Calculate the molecular (formula) mass of each compound: (a) iron(ll) acetate tetrahydrate; (b) sulfur tetrachloride; (c) potass

Nutka1998 [239]

Answer:

a) Iron(ll) acetate tetrahydrate: 245,68 g/mol

b) Sulfur tetrachloride: 173,87 g/mol

c) Potassium ermanganate 158,034 g/mol

Explanation:

To solve this kind of exercises you must look for the number of atoms in each molecule first, then look on the periodic table the atom weight and the multiply the atom weight times the quantity of each atom. For instance:

The molecule of Iron(II) acetate itetrahydrate is (CH3COO)2Fe•4H2O, it means that you have:

2 atoms of carbon times the atomic weight of C (12.00g/mol)= 24g

14 atoms of Hidrogen times the atomic weight of H (1,00g/mol)= 14g

6 atoms of Oxigen times the atomic weight of O (16,0g/mol)= 96

2 atoms of Iron times the atomic weight of Fe (55,84g/mol)= 111,68g

At last, you only have to add the results: 24+14+96+11,68= 245,68g/mol. This example was for the first molecule.

See you,

5 0

3 years ago

An atom x contains 14 protons, 13 electrons, and 12 neutrons, and atom y contains 14 protons, 14 electrons, and 12 neutrons. wha

Vika [28.1K]

<span>a. x and y are atoms of the same element.

If both atoms contain the same amount of protons, they are always the same element.
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7 0

3 years ago

Read 2 more answers

Which of the following solids would not decompose on heating​

Which of the following solids would not decompose on heating