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3 years ago

WORTH 20 POINTS PLZZZ HELP WILL GIVE BRANLIEST PLZZZ

Chemistry

2 answers:

inna [77]3 years ago

8 0

Answer: P represents electrical energy, Q represents thermal energy.

Explanation: The toaster takes electrical energy from the electrical socket through wires and converts that into thermal energy that heats up/toasts the bread.

scoundrel [369]3 years ago

5 0

Answer:

P represents electrical energy, Q represents thermal energy

Explanation:

I am sorry if I get this wrong, but when I put it in the sentence - A toaster transforms electrical energy into thermal energy - it made sense to me, so I think that is the answer. I am sorry if this does not help.

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Hydrocyanic acid is a weak acid. Therefore, the salt KCN is

Step2247 [10]

It is basic because of the fact that it has a strong base which is KOH and a weak acid HCN and the strong base causes it to remain more basic.

8 0

3 years ago

Which of these structures is found in all types of plant and animal cells

liq [111]

Answer:

Hi, There!

which of these structures is found in all types of plant and animal cells

Cell membrane is found in both animal and plant cells.

Nucleus is found in both animal and plant cells.

Cytoplasm is found in both animal and plant cells.

Mitochondria is found in both animal and plant cells.

Endoplasmic reticulum is found in both animal and plant cells.

Golgi apparatus is found in both animal and plant cells.

Lysosomes is found in both animal and plant cells.

$~Hope ~ this ~ Helps~$

5 0

3 years ago

Solid phosphorus and chlorine gas react to form phosphorus pentachloride gas .write a balanced chemical equation for this reacti

EleoNora [17]

Balanced chemical equation :

2 P + 5 Cl₂ = 2 PCl₅

hope this helps!

7 0

3 years ago

Read 2 more answers

2 NaOH (s) + CO2(g) → Na2CO3 (s) + H20 (I)

Paha777 [63]

<h3>Answer:</h3>

16.7 g H₂O

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Stoichiometry

Reading a Periodic Table
Using Dimensional Analysis

<h3>Explanation:</h3>

Step 1: Define

[RxN - Balanced] 2NaOH (s) + CO₂ (g) → Na₂CO₃ (s) + H₂O (l)

[Given] 1.85 mol NaOH

Step 2: Identify Conversions

[RxN] 2 mol NaOH → 1 mol H₂O

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

Step 3: Stoichiometry

Set up: $\displaystyle 1.85 \ mol \ NaOH(\frac{1 \ mol \ H_2O}{2 \ mol \ NaOH})(\frac{18.02 \ g \ H_2O}{1 \ mol \ H_2O})$
Multiply/Divide: $\displaystyle 16.6685 \ g \ H_2O$

Step 4: Check

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

16.6685 g H₂O ≈ 16.7 g H₂O

6 0

3 years ago

what is the anode material used in the extraction of aluminium by electrolysis and why it needs to be changed at interval

pishuonlain [190]

Answer:

the anode material is graphite(replaceable graphite rods).

The oxygen gas burns away the anode as Carbon dioxide therefore the anode must be replaced continuously.

3 0

3 years ago