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3 years ago

Answer this i will mark brainliest and don't steal points im gonna report you

Chemistry

2 answers:

jeka943 years ago

8 0

Answer:

The answer is c

Explanation:

Nuetrik [128]3 years ago

3 0

The answer is for this is A

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What is the position of the element ammonia in periodic table?

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Ammonia isn't an element, it's a compound made by mixing the elements Nitrogen and Hydrogen in the Haber process. Therefore, it isn't on the periodic table

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3 years ago

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Which piece of equipment would be used to measure the volume of liquid

cestrela7 [59]

It depends on your answers. Common liquid measuring devices include Graduated Cylinders, Test Tubes, and Beakers. The most likely answer to your question would be a Graduated Cylinder.

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3 years ago

A 2.5 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial temperature of 21 °C. After combus

SIZIF [17.4K]

Q=m°C<span>ΔT
=(500g) x (1 cal/g.</span>°C) x (48°C-21°C) = 13500 cal
13500 cal / 1000 = 13.5 kcal

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4 years ago

For the rxn CaCo3(s)+2Hcl(aq)_CaCl(aq)+Ca2(g)+H2O(l)68.1 g solid CaCo3 is mixed with 51.6Hcl what number of grams of Co2 will be

Svetach [21]

Answer:

29.9 g of CO₂ will be produced by the reaction.

Explanation:

This is the reaction:

CaCO₃(s) + 2HCl (aq) → CaCl₂(aq) + CO₂(g) + H₂O(l)

First of all, we state the moles of each reactant:

68.1 g . 1mol/ 100.08g = 0.680 mol of carbonate

51.6 g . 1 mol/36.45g = 1.46 mol of acid.

The solid salt is the limiting reactant. Ratio is 2:1

2 moles of acid can react to 1 mol of salt

1.46 mol of acid may react with (1.46 . 1)/2 = 0.727 moles

As we only have 0.680 moles of salt, we do not have enough.

Let's work at the product side. Ratio is 1:1

1 mo of salt can produce 1 mol of gas

0.680 moles will produce 0.680 moles of gas

We convert the moles to mass → 0.680 mol . 44g / 1mol = 29.9 g of CO₂

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3 years ago

Which change does not increase the speed of reaction between zinc and hydrochloric acid?

Mademuasel [1]

Any factor that causes molecules to collide more frequently speeds up the reaction rate. This is achieved by an increase of the reactants concentration, surface area, raised temp. , raised pressure of gaseous reactant, or an addition of catalysts to the reactant

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3 years ago

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Answer this i will mark brainliest and don't steal points im gonna report you ​

Answer this i will mark brainliest and don't steal points im gonna report you