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SVETLANKA909090 [29]
2 years ago
10

Someone please just help me just please I’m begging pleaseeeeee

Chemistry
1 answer:
solniwko [45]2 years ago
8 0
As less heat will escape out of the house. Heat escapes out the loft, window or floors
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Someone please help me
Fudgin [204]
The answer is ultraviolet
6 0
3 years ago
What mass of zinc is needed to react with 23.1g of phosphoric acid according to the following equation?
Hunter-Best [27]

23.01 g of zinc (Zn)

Explanation:

We have the following chemical reaction:

3 Zn + 2 H₃PO₄ = 3 H₂ + Zn₃(PO₄)₂

number of moles = mass / molar weight

number of moles of phosphoric acid = 23.1 / 98 = 0.236 moles

Taking in account the chemical reaction, we devise the following reasoning:

if           2 moles of H₃PO₄ are reacting with 3 moles of Zn

then      0.236 moles of H₃PO₄ are reacting with X moles of Zn

X = (0.236 × 3) / 2 = 0.354 moles of Zn

mass = number of moles × molar weight

mass of Zn = 0.354 × 65 = 23.01 g

Learn more about:

number of moles

brainly.com/question/13911775

#learnwithBrainly

5 0
3 years ago
Convert 7.34 miles into meters (1mile = 1.6 Km)
Lera25 [3.4K]

Answer:

11812.58 meters = 11.81258 Km

Explanation:

hope that helps

8 0
3 years ago
The ____ are new substances that are created following a chemical reaction. *
KonstantinChe [14]

Answer:

b

Explanation:

8 0
2 years ago
Which phrase best describes a period on the periodic table?
telo118 [61]

Answer:

<u>d. a row of elements</u>

Explanation:

Elements that are in the same group, have same number of electrons and make up a column in a periodic table.

.

3 0
3 years ago
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