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3 years ago

Which one is it ????

Chemistry

1 answer:

lianna [129]3 years ago

3 0

Cells can generate from non living matter is the answer

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Into what kinds of energy does a toaster convert electrical energy?

natima [27]

It converts the electrical entertainment into thermal energy, (heat energy) which heats the toast.

6 0

3 years ago

HELP PLEASE

lana66690 [7]

A burning fossil fuels that produces energy

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3 years ago

Convert the following Grams: 0.200 moles of H2S

ANEK [815]

Answer:

6.82 g H₂S

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

0.200 mol H₂S

Step 2: Identify Conversions

Molar Mass of H - 1.01 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of H₂S - 2(1.01) + 32.07 = 34.09 g/mol

Step 3: Convert

Set up: $\displaystyle 0.200 \ mol \ H_2S(\frac{34.09 \ g \ H_2S}{1 \ mol \ H_2S})$
Multiply: $\displaystyle 6.818 \ g \ H_2S$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

6.818 g H₂S ≈ 6.82 g H₂S

7 0

3 years ago

In which layer of Earth’s interior does convection occur?

lianna [129]

Answer:

The mantel. I'm pretty sure.

Explanation:

8 0

3 years ago

An aqueous solution of blue copper(II) ions can react with chloride ions to form a yellow copper compound. The ionic equation fo

klio [65]

Since the forward reaction is endothermic (heat is consumed in the reaction) that means that the enthalpy change for the forward reaction is a positive value.
Therefore, i would say that the reverse or backward reaction is exothermic (heat is released in the reaction to the sorroundings) and that the enthalpy change is a negative value.

5 0

3 years ago