2 years ago

Which of the following statements is correct?

Chemistry

1 answer:

Elenna [48]2 years ago

5 0

I think its A. Low pressure indicates rising air, Which allows clouds to from.

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The amount of which subatomic particle is different between an atom and its ion?

11111nata11111 [884]

There are three subatomic particles known: (1) electron which is found outside the nucleus of an atom and (2 and 3) protons and neutrons which are both inside the nucleus. As they are outside the nucleus, it is easier to transport electron than any other subatomic particle. Thus, atom and its ion differ in the number of electrons.

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2 years ago

When barium hydroxide and ammonium chloride react,the temperature of the mixture decreases.What kind of reaction is this?

GalinKa [24]

Answer:

Endothermic

Explanation:

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2 years ago

A rectangular solid has the following measurements 6 cm, 10 cm, and 5 cm. what is the volume of the solid?

AysviL [449]

300cm cubed ( have a great night! )

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2 years ago

True or False: In every gram of sucrose (table sugar) there is 0.513 g of oxygen

Ber [7]

Answer:

True

Explanation:

Step 1: Find molecular formula of sucrose

C₁₂H₂₂O₁₁

Step 2: Convert moles of oxygen present to grams

1 mol O = 16 g O

11 mol O = 176 g O

Step 3: Find molar mass of sucrose

C - 12.01 g/mol

H - 1.01 g/mol

O - 16.00 g/mol

12.01(12) + 22(1.01) + 11(16.00) = 342.34 g/mol C₁₂H₂₂O₁₁

Step 4: Set up dimensional analysis

$1 gC_{12}H_{22}O_{11}(\frac{176 gO}{342.34gC_{12}H_{22}O_{11}} )$

Step 5: Multiply/Divide and cancel out units

Grams of C₁₂H₂₂O₁₁ and grams of C₁₂H₂₂O₁₁ cancel out.

We are left with grams Oxygen

176/342.34 = 0.514109 grams Oxygen

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sertanlavr [38]

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3 years ago