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notka56 [123]
3 years ago
10

Find the density of 250 mL (volume) soy milk which has a mass of 276.3 grams. Use the density equation (mass ÷ volume).

Chemistry
1 answer:
Nutka1998 [239]3 years ago
3 0

Answer:

density =mass/volume

=276.3/250

=1.105g/ml

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Calculate the number of miles of magnesium,chlorine, and oxygen atoms in 5.00 moles of magnesium perchlorate
Zigmanuir [339]

Answer:

5.00 mol Mg

10.0 mol Cl

40.0 mol O

Explanation:

Step 1: Given data

Moles of Mg(ClO₄)₂: 5.00 mol

Step 2: Calculate the number of moles of Mg

The molar ratio of Mg(ClO₄)₂ to Mg is 1:1.

5.00 mol Mg(ClO₄)₂ × 1 mol Mg/1 mol Mg(ClO₄)₂ = 5.00 mol Mg

Step 3: Calculate the number of moles of Cl

The molar ratio of Mg(ClO₄)₂ to Cl is 1:2.

5.00 mol Mg(ClO₄)₂ × 2 mol Cl/1 mol Mg(ClO₄)₂ = 10.0 mol Cl

Step 4: Calculate the number of moles of O

The molar ratio of Mg(ClO₄)₂ to Cl is 1:8.

5.00 mol Mg(ClO₄)₂ × 8 mol O/1 mol Mg(ClO₄)₂ = 40.0 mol O

4 0
3 years ago
The rock and the cube have the same mass of 125 g but the rock have a smaller volume than the cube, which of the following is co
Eduardwww [97]
A. the rock is more dense than the cube
3 0
4 years ago
Which of the following describes the functions of the liver?
Katarina [22]

Answer: 2 and 3

Explanation:II and III

3 0
3 years ago
0. 34 ll of hno3hno3 is titrated to equivalence using 0. 14 ll of 0. 1 mnaohmnaoh. what is the concentration of the hno3hno3 ?
Sphinxa [80]

When 0.34 of HNO₃ is titrated to equivalence using 0.14 l of 0.1 m NaOH then the concentration of HNO₃ is 0.041 M

The reaction of neutralization of HNO₃ with NaOH is

HNO₃ + NaOH → H₂O + NaNo₃

When 1 mole of HNO₃ react with 1 mole of NaOH, based on chemical rection the moles of NaOH at equivalence point are equal to moles of HNO₃ present in solution: -

With the mole and volumes, we can find molarity as follows:

            Moles of NaOH = moles HNO₃

            ⁼ 0.14 L X (0.1 mol NaOH/L) = 0.014 mole NaOH

            =0.014 mol HNO₃

Molarity: -

              \frac{(Mole of HNO₃)}{(volume of HNO₃)}=  \frac{0.014}{0.34}

               = 0.041 M

Thus, from above solution we concluded that the concentration of HNO₃ solution is 0.041 M.

Learn more about molarity: brainly.com/question/8732513

#SPJ4

6 0
2 years ago
If xenon has an atomic number of 54 and a mass number of 108, how many neutrons does it have?
vladimir2022 [97]

1. The atomic number is equal to the number of protons in the nucleus, and the mass number is equal to the number of protons and neutros in the nucleus.

Therefore, to find the number of neutrons we must do mass number - atomic number, which equals 54.

Answer 1: a. 54

2. Atoms of a same element that have a different number of neutrons in the nucleus are called isotopes of an element.

Answer 2: d. Isotopes

3. Potassium has an electron configuration of [Ar] 4s^{1}, meaning that the first 3 shells are full, and that the last shell (4th one) has only 1 electron.

Answer 3: c. Shells 1, 2 and 3 are full and shell 4 has one electron.

4. An atomic bond isn't a specific bond, it's just a term. Polar covalent and non-polar covalent bonds are strong bonds, which leaves us with the hydrogen bonds, which are indeed the weakest bonds out there.

Answer 4: a. Hydrogen bond

Hope it helped,

BiologiaMagister

5 0
4 years ago
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